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Main profile

S. Gopalakrishnan

Professor

Office Room Number
AE126
Lab Room Number
AE125
Email
krishnan[at]aero.iisc.ernet.in
Office Phone Number
+91-80-22933019
Lab Phone Number
+91-80-22932048
Website
Lab Website

Education

Ph.D(Aeronautics & Astronautics) Purdue University USA,
M.Tech(Engineering Mechanics) Indian Institute of Technology Madras 
B.E(Civil Engineering) U V C E, Bangalore University 

Experience

  • Professor, Department of Aerospace Engineering, Indian Institute of Science, Bangalore, India. June 2007-Present
  • Associate Professor, Department of Aerospace Engineering, Indian Institute of Science, Bangalore, India. November 2003 – June 2007
  • Assistant Professor, Department of Aerospace Engineering, Indian Institute of Science, Bangalore, India. November 1997 – November 2003
  • Assistant Professor, Department of Civil Engineering, Indian Institute of Technology, Madras, India. November 1995 – November 1997
  • Senior Research Analyst, Dynamics Group, Engineering Mechanics Research Corporation, Bangalore, India. October 1994 – November 1995.
  • Postdoctoral Research Fellow, School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, U.S.A. May 1993 – July 1994.    
  • Research Assistant, Teaching Assistant, and David Ross Fellow, School of Aeronautics and Astronautics, Purdue University, W. Lafayette, Indiana, U.S.A. August 1989-March 1993
  • Teaching Assistant, Department of Engineering Mechanics, University of Wisconsin, Madison, Wisconsin, USA. August 1988 – August 1989. 
  • Scientist-B, Structural Sciences Division, National Aerospace Laboratories, Bangalore, India. June 1987-August 1988.

Research Interests

 1. Wave Propagation
2. Structural Dynamics
3. Structural Health Monitoring
4. Computational mechanics
5. Nanostructures and MEMS
6. Smart Structures
 

Selected Publications

A. Chakraborty, S. Gopalakrishnan, and J. Reddy, "A New Beam Finite Element for the Analysis of Functionally Graded Materials", International Journal for Mechanical Sciences, vol. 45, 2003, pp. 519-539.
A. Chakraborty, and S. Gopalakrishnan, "A Spectrally Formulated Finite Element for Wave Propagation in Functionally Graded Beams", International Journal for Solids and Structures, vol. 40, no. 10, 2003, pp. 2421-2448.
R. Mahapatra, and S. Gopalakrishnan, "Axial-Shear-Bending Coupled Wave Propagation in Thick Composite Beams", Composite Structures, vol. 59, no. 1, 2003, pp. 67-88.

Research Statement

Professor Gopalakrishnan has made seminal contribution in the areas of wave propagation in complex mediums and Structural Health Monitoring. Wave propagation is a fertile and well-researched area where Prof. Gopalakrishnan has made a mark both nationally and internationally through his seminal contributions. He has practically looked at wave propagation in most of the complex mediums such as metals, anisotropic materials such as laminated composites, functionally graded materials, carbon nanotubes and nanotubes reinforced nano composites structures, periodic structures such as hexagonal lattices, sandwich structures, fluids and electromagnetics. He has successfully solved many of these wave propagation problems through a unique combination of sound mathematical skills coupled with innovative and original ideas. His notable contribution is the invention of a new numerical method called Spectral Finite Element Method (SFEM), which has already become a tool to solve many wave propagation problems in complex media involving very high frequency input. The reason for SFEM popularity is that it can solve high frequency content problem at a fraction of a cost compared to many established analysis tools such as finite element method. In addition, SFEM makes the solution of inverse problems such as source or system identification simple and straightforward, which is not the case with conventional analysis tools. This has opened up the possibility of solving many difficult inverse problems such as load monitoring in aircrafts, crack detection and quantification in structures and systems, earthquake/Tsunami modeling, new material design for impact mitigation etc.
His research efforts are primarily responsible for bringing out clarity and complete understanding of many wave based phenomena in complex media. His contributions can be summarized as follows:

  • Development of Spectral Element Method as an analysis tool for wave propagation problems. Here, he has developed two variants of the method, one based on Fourier Transform and the other based on Wavelet Transform. The application of these methods to various practical problems involving composites, SHM and active control of structures were published by reputed international publishers as two different monographs. Till date, these two are the only books available on this modeling tool.
  • Propagation and scattering of waves in laminated composite 1-D and 2-d waveguides with defects such as notches/debands/delaminations/fiber breakages/degraded regions/corroded/porous regions.
  •  Propagation and scattering of anisotropic, inhomogeneous (in Functionally Graded structures) and Thermal waves and their interactions with structural discontinuities.
  • Propagation and characteristics of Lamb waves/Raleigh waves/Stonely waves   in a 2-D composite, anisotropic and inhomogeneous waveguides.
  •  Propagation and frequency band gap estimation of periodic structures such as hexagonal lattices, sandwich cores, single and multiwall carbon nanotubes and nanotube reinforced nano composite structures. In particular, he studied the effect of scale parameter on the evolution of band gaps in acoustic and optical phonon modes
  • Propagation of waves in. Propagation of waves in acoustic fluids and electromagnetic medium
  • Development of novel computational models for non-linear wave propagation in hyper elastic solids.

 
Prof. Gopalakrishnan has extensively published his work on many top rated international journals of very high impact factor. He has spread his work by publishing in over 50 different journals. He has a total of 164 journal papers, 5 graduate level books, two undergraduate books, 9 book chapters, 88 international conference papers and 13 national conference papers

Consulting Activities

Performed Consultancy Projects for the following Organizations/Comapnies

  • Oil and Natural Gas Corporation, IEOT, Government of India.  
  • Indian Space Research Organization, Bangalore,  Government of India
  • Defense Research and Development Laboratory (DRDL), DRDO, Hyderabad, Government of India.
  • :  Logwell Forge Ltd. New Delhi   
  • Aeronautical Development Agency, DRDO, Government of India.  
  • Composite Product Development Center (CPDC), DRDO, Hyderabad, Government of India.  
  • ASL, DRDO, Hyderabad, Government of India.  
  • Vikram Sarabhai Space Centre (VSSC), Tiruvanandapuram, Government of India.  
  • GTRE, DRDO, Bangalore, Government of India.  

Current Projects

  1. Carbon Nanotube and Graphene Based Multi-scale Composite Architecture for Improved Energy Absorption in Aerospace Structures Funding Agency: DST/British Council through UK-India Educational Research Initiative
  2. Carbon Nanotube and Graphene Based Multi-scale Composite Architecture for Improved Energy Absorption in Aerospace Structures Funding Agency: DST/British Council through UK-India Educational Research Initiative
  3. Structural Health Monitoring Of Composite Structures Using 3-D Time Domain Spectral Finite Elements Funding Agency: Boeing Aircraft Company, St Louis, USA
  4. Modeling, Detection and Quantification of Corrosion Pits in a Metallic Structure Funding Agency: Boeing Aircraft Company, St Louis, USA
  5. Guided Wave based method for Damage Detection in Gas Turbine Engine Structural Components Funding Agency: Pratt & Whitney Corporation, East Hartford, USA

Completed Projects

  1. Mechanics based Damage Detection Methodologies using Spectral Finite Elements Funding Agency: Office of Naval Research, USA
  2. Multi-scale Modeling of 2-D Fabric Composite Materials Funding Agency: Pratt & Whitney Corporation, East Hartford, USA
  3. Effective Non Destructive Methodology for Gas Turbine Engine Structural Components Funding Agency: Pratt & Whitney Corporation, East Hartford, USA
  4. Development of High Strain Rate Constitutive Finite element Modeling capability for NGPF Applications, Funding Agency: Pratt & Whitney Corporation, East Hartford, USA
  5. Wavelet Spectral Finite Elements for Wave Propagation in Composite Plates with Damages Funding Agency: Air force office for Advanced Research and Development (AOARD), AFOSR, Tokyo, Japan. The project is executed jointly with Clarkson University, USA

Books

8.
  
S. Gopalakrishnan, and S. .Narendar, "Wave propagation in Nano Structures," Springer Verlag, UK, 2013.

7.
  
K. Vinoy, G. Ananth. Suresh, S. .Gopalakrishnan, K. Bhat, and V. Aatre, "Micro and Smart Systems," John Wiley & Sons, USA, 2012.

6.
  
S. .Gopalakrishnan, M. .Ruzzene, and S. .Hanagud, "Computational techniques for Structural Health Monitoring, ," Springer Verlag, Germany, 2011.

5.
  
K. Vinoy, G. AnanthSuresh, S. Gopalakrishnan, K. Bhat, and V. Aatre, "Micro and Smart Systems," Wiley (India) Pvt LTD, India, 2010.

4.
  
S. Gopalakrishnan, and M. Mitra, "Wavelet Methods for Dynamical Problems," CRC Press, Boston, USA, 2010.

3.
  
S. Gopalakrishnan, "Modeling Aspects In Finite Elements For Structural Health Monitoring,", vol. 2-Part 4, Chapter 42 John Wiley & Sons, Chincester, UK, 2009.

2.
  
S. .Gopalakrishnan, A. .Chakraborty, and R. Mahapatra, "Spectral Element Method," Springer Verlag, Germany, 2007.

1.
  
V. K. Varadan, K. J. Vinoy, and S. .Gopalakrishnan, "Smart Material Systems and MEMS: Design and Development Methodologies.," John Wiley & Sons, Chincester, UK, 2006.

Journal Papers

163.
  
A. Arunkumar, and S. Gopalakrishnan, "Automatic Finite Element Formulation and Assembly of Higher order Hyperelastic Structural Models," Applied Mathematical Modeling, In Press.


161.
  
V. Chellappan, S. Gopalakrishnan, and V. Mani, "Frequency domain based solution for certain class of wave equation: An exhaustive study of numerical solutions," Computer Modeling in Engineering and Sciences, In Press.

160.
  
D. Samaratunga, R. Jha, and S. Gopalakrishnan, "Wavelet Spectral Finite Element for Wave Propagation in Shear Deformable Laminated Composites Plates," Composite Structures , vol. 108, no. 1, 2014, pp. 341-353.

159.
  
S. Narendar, and S. Gopalakrishnan, "A Nonlocal Continuum Mechanics Model for Analyzing Terahertz Flexural Wave Propagation of a Monolayer Graphene Embedded in a Elastic Medium," International Journal for Computational and Engineering Mechanics, vol. 15, no. 1, 2014, pp. 62-68.

158.
  
V. Ajith, and S. Gopalakrishnan, "Wave Propagation in Porous Composite Beam: Porasity determination, Location and Quantification," International Journal for Solids and Structures, vol. 50, no. 3-4, 2013, pp. 556-569.

157.
  
V. Ajith, and S. Gopalakrishnan, "Wave Propagation in Stiffened Structures using Spectrally Formulated Finite Element," European Journal of Mechanics, A/Solids, vol. 41, 2013, pp. 1-15.

156.
  
T. 8. Prasannakumar, S. Narendar, and S. Gopalakrishnan, "Thermal Vibration analysis of a Monolayer Graphene embedded in a Elastic Medium based on Non local Contiuum Mechanics," Composite Structures , vol. 100, 2013, pp. 332-342.

155.
  
S. Gopalakrishnan, "Lamb wave Propagation in Laminated Composite Structures," Journal of Indian Institute of Science, vol. 93, no. 4, 2013, pp. 699-714.

154.
  
S. Gopalakrishnan, "Wave Propagation in Structures with Periodic Defects," Proceedings of the Indian National Science Academy,, vol. 79, no. 4, 2013, pp. 615-624.

153.
  
S. Narendar, and S. Gopalakrishnan, "Scale Effects on Ultrasonic Wave Dispersion Characteristics of a Monolayer Graphene Embedded in Elastic Medium," Journal of Mechanics of Materials and Structures, vol. 7, no. 5, 2012, pp. 413-434.

152.
  
A. Arunkumar, and S. Gopalakrishnan, "Time and Frequency domain Finite Element Models for axial wave analysis in hyperelastic rods," Mechanics of Advanced Materials and Structures , vol. 19, no. 1-3, 2012, pp. 79-99.

151.
  
S. Narendar, and S. Gopalakrishnan, "Nonlocal continuum mechanics formulation for axial, flexural, shear and contraction coupled wave propagation in single walled Carbon nanotubes," Latin American Journal of Solids and Structures, vol. 9, no. 4, 2012, pp. 497-513.

150.
  
S. Narendar, S. Gupta, and S. Gopalakrishnan, "Wave propagation in single-walled carbon nanotube in longitudinal magnetic field using nonlocal Euler-Bernoulli beam theory," Applied Mathematical Modeling, vol. 36, no. 9, 2012, pp. 4529-4538.

149.
  
S. Narendar, and S. Gopalakrishnan, "Nonlocal continuum mechanics based ultrasonic flexural wave dispersion characteristics of a monolayer graphene embedded in polymer matrix," Composites-PART B Engineering, vol. 43, no. 8, 2012, pp. 3096-3103.

148.
  
S. Narendar, and S. Gopalakrishnan, "A Non-local Continuum Mechanics Model to Estimate the Material Property of Single-Walled Carbon Nanotubes," International Journal of Nanoscience, vol. 11, no. 1, 2012, pp. Article no: 1250007.

147.
  
S. Jalan, N. Rao, and S. Gopalakrishnan, "Development of empirical relations for the transversely isotropic properties of zigzag, armchair and chiral single-walled carbon nanotubes," Advanced Composite Letters, vol. 21, no. 4, 2012, pp. 93-99.

146.
  
S. Narendar, S. Ravinder, and S. Gopalakrishnan, "Study of non-local Wave Properties of Nanotubes with Surface Effects," Computational Material Science, vol. 56, 2012, pp. 179-184.

145.
  
N. Satish, S. Narendar, and S. Gopalakrishnan, "Thermal Vibration Analysis of Orthrotropic Nanoplates Based on Nonlocal Continnuam mechanics," Physica E, vol. 44, no. 9, 2012, pp. 150-160.

144.
  
S. Narendar, S. Ravinder, and S. Gopalakrishnan, "Strain Gradient Torsional Vibration Analysis of Micro/Nano Rods," International Journal of Nano Dimension, vol. 3, no. 1, 2012, pp. 1-17.

143.
  
S. Narendar, and S. Gopalakrishnan, "Temperature Effects on Wave Propagation in Nanoplates," Composites-PART B Engineering, vol. 43, no. 3, 2012, pp. 175-181.

142.
  
N. Chakraborty, V. Rathod, R. Mahaptra, and S. Gopalakrishnan, "Guided Wave based Detection of Damage in Honeycomb Core Sandwich Structures," NDT & E International, vol. 49, 2012, pp. 27-33.

141.
  
B. Deepak, R. Ganguli, and S. Gopalakrishnan, "Dynamics of rotating composite beams: A comparative study between CNT reinforced polymer composite beams and laminated composite beams using spectral finite elements," International Journal for Mechanical Sciences, vol. 64, no. 1, 2012, pp. 110-126.

140.
  
A. Arunkumar, and S. Gopalakrishnan, "Automatic Energy-Momentum Conserving Time Integrators for Hyperelastic Waves," Journal of Computational and Applied Mathematics, vol. 236, no. 18, 2012, pp. 4700-4711.

139.
  
S. Narendar, and S. Gopalakrishnan, "Study of Terahertz Wave Propagation Properties in Nanoplates with Surface and Small Scale Effects," International Journal for Mechanical Sciences, vol. 64, no. 1, 2012, pp. 221-231.

138.
  
S. Narendar, and S. Gopalakrishnan, "Scale effects on buckling analysis of orthotropic nanoplates based on nonlocal two variable refined plate theory," Acta Mechanica, vol. 223, 2012, pp. 395-413.


136.
  
S. Narendar, and S. Gopalakrishnan, "Spectral Finite Element Formulation for Nanorods via Nonlocal Continuum Mechanics," ASME Journal of Applied Mechanics, vol. 78, no. 6, 2011, pp. Article No: 4003909.

135.
  
M. Trikha, R. Mahaptra, S. Gopalakrishnan, and R. Pandiyan, "Analysis of Dynamic Stability of Space Launch Vehicles under Aerodynamic Forces using CFD Derived Data," International Journal for Computational and Engineering Mechanics, vol. 12, no. 5, 2011, pp. 213-224.

134.
  
V. Ajith, and S. Gopalakrishnan, "Spectral Element Approach for Wave Propagation in Uncertain Composite Beam Structures," ASME Journal of Vibration and Acoustics, vol. 133, 2011, pp. Article No: 051006.

133.
  
R. Gangadharan, M. Bhat, C. RL. Murthy, and S. Gopalakrishnan, "Time Reversal Health Monitoring of Composite Plates using Lamb Waves," International Journal of Aerospace Innovations, vol. 3, no. 3, 2011, pp. 131-141.

132.
  

131.
  
S. N. Omkar, J. Senthilnath, R. Khandelwal, G. N. Naik, and S. Gopalakrishnan, "Artificial Bee Colony (ABC) for multi-objective design optimization of composite structures," Applied Soft Computing Journal, vol. 11, no. 1, 2011, pp. 489-499.

130.
  
K. Kishore, S. Gopalakrishnan, and R. Ganguli, "Uncertainty quantification of sloshing motion in partially filled rectangular tanks," International Journal for Computational and Engineering Mechanics, vol. 49, no. 6, 2011, pp. 509-522.

129.
  
G. N. Naik, S. N. Omkar, M. Dheervatsa, and S. Gopalakrishnan, "Nature Inspired Optimization Techniques for the Design optimization of Laminated Composite Structures using failure Criteria," Expert Systems with Applications, vol. 38, no. 3, 2011, pp. 2489-2499.

128.
  
S. Narendar, and S. Gopalakrishnan, "Axial Wave propagation in coupled nanorod system with non local small scale effects," Composites-PART B Engineering, vol. 42, no. 7, 2011, pp. 2013-2023.

127.
  

126.
  
S. Narendar, and S. Gopalakrishnan, "Ultrasonic wave characteristics of a monolayer graphene on silicon substrate," Composite Structures , vol. 93, no. 8, 2011, pp. 1997-2009.

125.
  
S. Narendar, S. Gupta, S. Gopalakrishnan, and R. Batra, "Ultrasonic Vibration Analysis of Single-Walled Carbon Nanotubes under Longitudinal Magnetic Field using Nonlocal Elasticity and Wave Propagation Approach," Advanced Science Letters , vol. 4, 2011, pp. 3382-3389.

124.
  
S. Narendar, and S. Gopalakrishnan, "Non local Wave propagation in Rotating Nano tubes," Results in Physics, vol. 1, 2011, pp. 17-25.

123.
  
S. Narendar, R. Mahaptra, and S. Gopalakrishnan, "Prediction of Nonlocal Scaling Parameter for Armchair and Zigzag Single-Walled Carbon Nanotubes based on Molecular Structural Mechanics, Nonlocal Elasticity and Wave Propagation," International Journal on Engineering Science, vol. 49, 2011, pp. 509-522.

122.
  
S. Narendar, S. Ravinder, and S. Gopalakrishnan, "Surface Effects On Nonlocal Critical Buckling Temperature Of Nanotubes," Nanomechanics Science and Technology: An International Journal , vol. 2, no. 4, 2011, pp. 295-308.

121.
  
K. Kishor, S. Gopalakrishnan, and R. Ganguli, "Three dimensional sloshing: A Consistent finite element approach," International Journal for Numerical Methods in Fluids , vol. 66, no. 3, 2011, pp. 345-376.

120.
  
S. Narendar, and S. Gopalakrishnan, "Nonlocal Thermo-elastic Damping in Carbon Nanotubes," Nano Trends: A Journal of Nano Technology and its Applications, vol. 11, no. 2, 2011, pp. 14-24.

119.
  
M. Murthy, S. Gopalakrishnan, and P. Nair, "Signal wrap-around free Spectral Element Formulation for multiply connected Finite 1-D waveguides: Solution of Forward and Inverse problems," Journal of Aerospace Sciences and Technologies: Special Issue on Vibration and Acosutics , vol. 63, no. 1, 2011, pp. 72-88.

118.
  
R. Ali, R. Mahaptra, and S. Gopalakrishnan, "Time Domain Characteristics of Electrical Measures for a Piezoelectric Thin Film to Identify Defects in the Substrate," Structural Health Monitoring , vol. 9, no. 2, 2010, pp. 173-192.

117.
  
R. Gangadharan, C. R L. Murthy, S. Gopalakrishnan, M. Bhat, and R. Mahaptra, "Characterization of cracks and delaminations using PWAS and Lamb Wave based Time-Frequency methods," International Journal on Smart Sensing and Intelligent Systems, vol. 3, no. 4, 2010, pp. 703-735.

116.
  
V. Ajith, and S. Gopalakrishnan, "Wave Propagation in Uncertain Beam Structures: A Monte-Carlo Simulation based approach under Spectral Finite Element Environment," Journal of Mechanics of Materials and Structures, vol. 5, no. 4, 2010, pp. 637-659.

115.
  
M. Trikha, R. Mahaptra, S. Gopalakrishnan, and R. Pandiyan, "Structural Stability of Slender Aerospace Vehicles-PART -II," International Journal for Mechanical Sciences, vol. 52, no. 9, 2010, pp. 1145-1157.

114.
  
M. Trikha, R. Mahaptra, S. Gopalakrishnan, and R. Pandiyan, "Structural Stability of Slender Aerospace Vehicles-PART -I," International Journal for Mechanical Sciences, vol. 52, no. 7, 2010, pp. 937-951.

113.
  
S. Narendar, and S. Gopalakrishnan, "Theoretical Estimation of Length Dependent In-plane Stiffness of Single Wall Carbon Nantubes Using Non-local Elasticity Theory," Journal of Computational and Theoretical Nanoscience, vol. 7, no. 11, 2010, pp. 2349-2354.

112.
  
G. Giridhara, V. Rathod, S. Naik, R. Mahaptra, and S. Gopalakrishnan, "Rapid Localization of Damage using a Circular Sensor Array and Lamb Wave based Triangulation," Mechanical Systems and Signal Processing, vol. 24, no. 8, 2010, pp. 2929-2946.

111.
  
S. Narendar, and S. Gopalakrishnan, "Ultrasonic Wave Characteristics of Nanorods via Nonlocal Strain Gradient Models," Journal of Applied Physics, vol. 107, no. 8, 2010, pp. Paper No: 084312.

110.
  
V. Sudhakar, S. Gopalakrishnan, and K. Vijayaraju, "Development of a new Finite Element for the analysis of a Sandwich beam with soft core," Journal of Sandwich Structures and Materials, vol. 12, no. 6, 2010, pp. 649-683.

109.
  
S. Narendar, R. Mahaptra, and S. Gopalakrishnan, "Investigation of the effect of nonlocal scale on ultrasonic wave dispersion characteristics of a monolayer graphene," Computational Material Science, vol. 49, no. 4, 2010, pp. 734-742.

108.
  
K. Kishor, S. Gopalakrishnan, and R. Ganguli, "A Legendre spectral element model for sloshing and acoustic analysis in nearly incompressible fluids," Journal of Computational Physics , vol. 229, no. 7, 2010, pp. 2605-2624.

107.
  
S. Narendar, and S. Gopalakrishnan, "Strong Non localization Induced by Small Scale Parameter on Flexural Wave Characteristics of a Monolayer Graphene," Physica E, vol. 43, no. 1, 2010, pp. 423-430.

106.
  
S. Narendar, and S. Gopalakrishnan, "Nonlocal scale effects on ultrasonic wave characteristics of nanorods ," Physica E, vol. 42, no. 5, 2010, pp. 1601-1604.

105.
  
R. Gangadharan, M. Bhat, C. R L. Murthy, and S. Gopalakrishnan, "A geodesic based triangulation technique for damage location in metallic and composite plates," Smart Materials and Structures, vol. 19, no. 11, 2010, pp. Paper No: 115010.

104.
  

103.
  
S. Anantatheertha, G. N. Naik, S. Gopalakrishnan, and S. Rao, "High Accuracy Curve Fits for Chirality, Length and Diameter Dependent Initial Modulus of Single Walled Carbon Nanotubes," Physica E, vol. 43, no. 1, 2010, pp. 252-255.

102.
  
R. Gangadharan, M. Bhat, C. Murthy, and S. Gopalakrishnan, "Time Reversal Technique for Health Monitoring of Metallic Structure using Lamb Waves Ultrasonics," Ultrasonics, vol. 49, no. 8, 2009, pp. 696-705.

101.
  
R. Gangadharan, G. Prasanna, M. Bhat, C. Murthy, and S. Gopalakrishnan, "Acoustic emission source location and damage detection in a metallic structure using graph theory based geodesic approach," Smart Materials and Structures, vol. 18, no. 11, 2009, pp. Article number 115022.

100.
  
R. Ganagadharan, G. Prasanna, M. Bhat, C. Murthy, and S. Gopalakrishnan, "Acoustic Emission Source Location in Composite Structure by Voronoi construction using Geodesic Curve Evolution," Journal of Acoustic Society Of America, vol. 126, no. 5, 2009, pp. 2324-2330.

99.
  
G. Giridhara, and S. Gopalakrishnan, "Frequency Domain based Damage Index for Structural Health Monitoring," Structural Durability and Health Monitoring, vol. 5, no. 1, 2009, pp. 1-32.

98.
  
M. Trikha, R. Mahaptra, S. Gopalakrishnan, and R. Pandiyan, "Dynamic Instabilities in Slender Space Launch Vehicles under Propulsive Thrust and Aerodynamic Forces," Computer Modeling in Engineering and Sciences, vol. 45, no. 2, 2009, pp. 97-139.

97.
  
S. Narendar, and S. Gopalakrishnan, "Nonlocal Scale Effects on Wave Propagation in Multi-Walled Carbon Nanotubes," Computational Material Science, vol. 47, no. 2, 2009, pp. 526-538.

96.
  
R. Ganagadharan, R. Mahaptra, S. Gopalakrishnan, C. R L. Murthy, and M. Bhat, "On the sensitivity of elastic waves due to structural damages: time-frequency based indexing method," Journal of Sound and Vibration, vol. 320, no. 4-5, 2009, pp. 915-941.

95.
  
M. Mitra, and S. Gopalakrishnan, "Wave propagation in multi-walled carbon nanotube," Computational Material Science, vol. 45, 2009, pp. 411-418.

94.
  
S. Omkar, G. N. Naik, and S. Gopalakrishnan, "Quantum behaved Particle Swarm Optimization (QPSO) for multi-objective design optimization of composite structures," Expert Systems with Applications, vol. 36, 2009, pp. 11312-11322.

93.
  
R. Ali, R. Mahaptra, and S. Gopalakrishnan, "Electrostatic Measures in a Constrained Piezoelectric Film with Sub-surface Crack in Substrate - Mode II," Smart Materials and Structures, vol. 17, no. 2, 2008, pp. Article Number 025038.

92.
  
R. Ali, R. Mahapatra, and S. Gopalakrishnan, "Electrostatic Measures in a Constrained Piezoelectric Film with Sub-surface Crack in Substrate - Mode I," Smart Materials and Structures, vol. 17, no. 2, 2008, pp. Article Number 025037.

91.
  
7. Priyank. Gupta, G. Gridhara, and S. Gopalakrishnan, "Damage Detection based on Damage Force Indicator, using Reduced order FE Models," International Journal for Computational Methods in Engineering and Sciences, vol. 9, no. 3, 2008, pp. 154-170.

90.
  
N. Apetre, M. Ruzzene, S. Hanagud, and S. Gopalakrishnan, "Spectral and Perturbation Analysis of First order beams with Notch Damage," ASME Journal of Applied Mechanics, vol. 75, no. 3, 2008, pp. Article Number 031019.

89.
  
S. Omkar, R. Khandelwal, S. Yathindra, G. N. Naik, and S. Gopalakrishnan, "Artificial Immune System for multi-objective design optimization of composite structures," Engineering Applications of Artificial Intelligence, vol. 21, no. 8, 2008, pp. 1416-1429.

88.
  
M. Mitra, S. Gopalakrishnan, N. Apetre, M. Ruzzene, and S. Hanagud, "Perturbation Technique For Wave Propagation Analysis In A Notched Beam Using Wavelet Spectral Element Modeling," Journal of Mechanics of Materials and Structures, vol. 2, no. 4, 2008, pp. 753-772.

87.
  
M. Mitra, and S. Gopalakrishnan, "Wave Characteristics in Multi-walled Carbon Nanotubes," Computer Modeling in Engineering and Sciences, vol. 27, no. 1-2, 2008, pp. 125-136.

86.
  
N. Apetre, M. Ruzzene, S. Hanagud, and S. Gopalakrishnan, "A Wave-Based Damage Index For The Analysis Of The Filtered Response Of Damaged Beams, Journal of Mechanics of Materials and Structures ," Journal of Mechanics of Materials and Structures, vol. 3, no. 9, 2008, pp. 1605-1623.

85.
  
S. Omkar, M. Deevatsa, G. N. Naik, and S. Gopalakrishnan, "Multi-Objective Design Optimization of Composite Structures using Vector Evaluated Particle Swarm Optimization," Computers and Structures, vol. 86, no. 2, 2008, pp. 1-14.

84.
  
M. Mitra, and S. Gopalakrishnan, "Wave propagation analysis in anisotropic plate using wavelet spectral element approach," ASME Journal of Applied Mechanics, vol. 102, no. 8, 2008, pp. Article number 084301.

83.
  
G. N. Naik, S. Gopalakrishnan, and R. Ganguli, "Multi-Objective Design Optimization of Composite Structures using Genetic Algorithms," Composite Structures , vol. 83, no. 4, 2008, pp. 354-367.

82.
  
P. Vignesh, M. Mitra, and S. Gopalakrishnan, "Nano-composite Insert in 1-D waveguides for the control of Elastic power flow," Nanotechnology, vol. 18, 2007, pp. 1-10.

81.
  
K. Vinod, S. Gopalakrishnan, and R. Ganguli, "Spectral Finite Element Method Applied to Beam with Axial Load," Computer Modeling in Engineering and Sciences, vol. 16, no. 3, 2007, pp. 197-208.

80.
  
M. Murthy, S. Gopalakrishnan, and P. Nair, "A Super convergent Higher Order Finite Element Formulation for asymmetric Composite Beams," Computers Materials and Continua, vol. 5, no. 1, 2007, pp. 43-62.

79.
  
K. Vinod, S. Gopalakrishnan, and R. Ganguli, "Free Vibration and Wave Propagation Analysis of Uniform and Tapered Rotating Beams Using Spectrally Formulated Finite Elements," International Journal for Solids and Structures, vol. 44, no. 19, 2007, pp. 5875-5893.

78.
  
A. Kumar, A. Chakraborty, and S. Gopalakrishnan, "Modified Virtual Crack Closure Technique Using Pseudo spectral Finite Element Method," International Journal for Computational Methods, vol. 4, no. 1, 2007, pp. 109-140.

77.
  
M. Mitra, and S. Gopalakrishnan, "High frequency characteristics of single walled carbon-nanotube: Time and frequency domain analysis," Journal of Applied Physics,, vol. 101, no. 11, 2007, pp. Article no:114320.

76.
  
N. Hu, H. Fukunaga, M. Kameyama, R. Mahaptra, and S. Gopalakrishnan, "Analysis of Wave Propagation in Beams with Transverse and Lateral Cracks using a Weakly Formulated Spectral Method," ASME Journal of Applied Mechanics, vol. 74, no. 1, 2007, pp. 119-127.

75.
  
M. Mitra, and S. Gopalakrishnan, "Wave propagation in imperfectly bonded single-walled carbon nanotube/polymer composites”," Journal Of Applied Physics, vol. 102, no. 8, 2007, pp. Article no: 084301.

74.
  
D. Ghosh, and S. Gopalakrishnan, "A Super Convergent Finite Element for a Composite Beam with embedded Magnetostrictive Patches," Composite Structures , vol. 79, no. 3, 2007, pp. 315-330.

73.
  
S. Tabrez, M. Mitra, and S. Gopalakrishnan, "Modeling of Material Degradation due to Moisture Absorption in an Composite beam For Wave Propagation Based Detection," Computer Modeling in Engineering and Sciences, vol. 22, no. 1, 2007, pp. 77-89.

72.
  
N. Sahoo, R. Mahaptra, G. Jagadeesh, S. Gopalakrishnan, and K. Reddy, "Design and Analysis of a flat accelerometer-based force balance system for shock tunnel testing," Measurement, vol. 40, no. 1, 2007, pp. 93-106.

71.
  
N. Hu, H. Wang, H. Fukunaga, R. Mahaptra, and S. Gopalakrishnan, "The partition of unity finite element method for elastic wave propagation in Reissner-Mindlin plates," International Journal for Numerical Methods in Engineering, vol. 70, no. 12, 2007, pp. 1451-1479.

70.
  
M. Mitra, and S. Gopalakrishnan, "Wavelet Spectral Element For wave Propagation Studies In Pressure Loaded Axisymmetric Cylinders," Journal of Mechanics of Materials and Structures, vol. 2, no. 4, 2007, pp. 753-772.

69.
  
R. Mahapatra, D. Ghosh, and S. Gopalakrishnan, "Multiscale Finite Element Modeling of Pattern Formation in Magnetostrictive Composite Thin Film," International Journal for Multi-scale Computational Engineering,, vol. 4, no. 3, 2006, pp. 337-349.

68.
  
S. Agarwal, A. Chakraborty, and S. Gopalakrishnan, "Large Deformation Analysis for Anisotropic and Inhomogeneous Beams Using Exact Linear Static Solutions," Composite Structures , vol. 79, 2006, pp. 91-104.

67.
  
A. Chakraborty, and S. Gopalakrishnan, "A Spectral Finite Element Model for Wave Propagation Analysis in Laminated Composite Plate," ASME Journal of Vibration and Acoustics, vol. 128, no. 4, 2006, pp. 477-488.

66.
  
R. Mahapatra, S. Suresh, S. Omkar, and S. Gopalakrishnan, "Estimation of Degraded Composite Laminate Properties Using Acoustic Wave Propagation Model and a Reduction-Prediction Network," Engineering Computations , vol. 22, no. 7-8, 2006, pp. 849-876.

65.
  
A. Chakraborty, and S. Gopalakrishnan, "An approximate Spectral Element for the Analysis of Wave Propagation in Inhomogeneous Layered Media," AIAA Journal, vol. 44, no. 7, 2006, pp. 1676-1685.

64.
  
A. Chakraborty, S. Gopalakrishnan, and M. Sivakumar, "Spectral Element Based Model for Wave Propagation Analysis in Multi-Wall Carbon Nanotubes," International Journal for Solids and Structures, vol. 43, 2006, pp. 279-294.

63.
  
R. Ali, R. Mahapatra, and S. Gopalakrishnan, "A Quasi 3-D Approach to Modeling and Analysis of Constrained Piezoelectric Thin Film," Acta Materialia, vol. 54, 2006, pp. 5529-5540.

62.
  
R. Mahapatra, A. Singhal, and S. Gopalakrishnan, "A Higher order Finite Waveguide Model for Spectral Analysis of Composite Structures," Computer methods in applied Mechanics and Engineering, vol. 195, 2006, pp. 1116-1135.

61.
  
M. Mitra, and S. Gopalakrishnan, "Wavelet Based 2-D Spectral Finite Element Formulation for Wave Propagation Analysis in Isotropic Plates," Computer Modeling in Engineering and Sciences, vol. 15, no. 1, 2006, pp. 49-67.

60.
  
M. Mitra, and S. Gopalakrishnan, "'Wave propagation analysis in carbon nanotube embedded composite using wavelet based spectral finite element," Smart Materials and Structures, vol. 15, 2006, pp. 104-122.

59.
  
M. Mitra, and S. Gopalakrishnan, "Wavelet Based Spectral Finite Element for Analysis of Coupled Wave Propagation in Higher Order Composite Beam," Composite Structures , vol. 73, no. 3, 2006, pp. 263-277.

58.
  
M. Mitra, and S. Gopalakrishnan, "Extraction of wave characteristics from wavelet based spectral finite element formulation," Mechanical Systems and Signal Processing , vol. 20, no. 8, 2006, pp. 2046-2079.

57.
  
S. Kumar, R. Mahapatra, and S. Gopalakrishnan, "Estimation of Dynamic Fracture Parameters In Transverse Cracked Composite Beam Using Simplified Diagnostic Wave Propagation Model," Structural Health Monitoring , vol. 5, no. 2, 2006, pp. 99-124.

56.
  
R. Sridhar, A. Chakraborty, and S. Gopalakrishnan, "Wave Propagation in a isotropic and Inhomogeneous Uncracked and Cracked Structures using Pseudo-spectral Finite Element Method," International Journal for Solids and Structures, vol. 43, no. 16, 2006, pp. 4997-5031.

55.
  
M. Mitra, and S. Gopalakrishnan, "Wavelet based spectral finite element modeling and detection of de-lamination in composite beams," Proceedings of Royal Society, London, vol. 462, 2006, pp. 1721-1740.

54.
  
D. Ghosh, and S. Gopalakrishnan, "Coupled Analysis of Composite Laminate With Embedded Magnetostrictive Patches," Smart Materials and Structures, vol. 14, 2005, pp. 1462-1473.

53.
  
A. Krishnamurthy, G. N. Naik, and S. Gopalakrishnan, "Towards A Rational Criteria for Composite Laminae," Mechanics of Advanced Structures and Materials, vol. 12, no. 2, 2005, pp. 147-157.

52.
  
A. Chakraborty, and S. Gopalakrishnan, "A Spectrally Formulated Plate Element for Wave Propagation Analysis in Anisotropic Material," Computer methods in Applied Mechanics and Engineering, vol. 194, no. 42-44, 2005, pp. 4425-4426.

51.
  
A. Chakraborty, and S. Gopalakrishnan, "Wave Propagation in Inhomogeneous Beam : A Spectral Element Formulation," Computational Mechanics, vol. 36, no. 1, 2005, pp. 1-12.

50.
  
R. Ali, R. Mahapatra, and S. Gopalakrishnan, "Constrained Piezoelectric Thin Film Sensor for Sensing of Subsurface Cracks," Smart Materials and Structures, vol. 14, no. 2, 2005, pp. 376-386.

49.
  
A. Chakroborty, S. Gopalakrishnan, and E. Kausel, "Wave Propagation Analysis in Inhomogeneous Piezo-Composite Layer by Thin Layer Method," International Journal for Numerical Methods in Engineering, vol. 64, 2005, pp. 567-598.

48.
  
M. Mitra, and S. Gopalakrishnan, "Spectrally Formulated Wavelet Finite Element for Wave Propagation and Impact Force Identification in Connected 1-D Waveguides," International Journal for Solids and Structures, vol. 42, no. 16-17, 2005, pp. 4695-4721.

47.
  
R. Mahaptra, D. Ghosh, and S. Gopalakrishnan, "Multiscale Finite Element Modeling of the coupled nonlinear Dynamics of Magnetostrictive Composite Thin film," Lecture Series in Computer Science-Springer-Verlag, vol. 3516, 2005, pp. 1-8.

46.
  
R. Mahaptra, A. Singhal, and S. Gopalakrishnan, "Numerical analysis and design of piezoelectric composite IDT for Lamb wave generation," IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control,, vol. 52, no. 10, 2005, pp. 1851-1860.

45.
  
R. Mahaptra, A. Singhal, and S. Gopalakrishnan, "Lamb Wave Characteristics of Thickness-Grades Piezoelectric IDT,," Ultrasonics, vol. 46, no. 9, 2005, pp. 736-746.

44.
  
M. Murthy, R. Mahaptra, S. Gopalakrishnan, and K. Badrinarayana, "A Refined Higher order Finite Element for Asymmetric Composite Beam," Composite Structures, vol. 67, no. 1, 2005, pp. 27-35.

43.
  
R. Ali, R. Mahapatra, and S. Gopalakrishnan, "Analysis of Constrained Piezoelectric Layer: A Two Dimensional Coupled Electro-Mechanical Model," Ferroelectrics, vol. 329, 2005, pp. 131-137.

42.
  
G. N. Naik, S. Gopalakrishnan, and A. Krishnamurthy, "A Failure mechanism based Failure theory for Laminated Composites including the effect of shear stress," Composite Structures, vol. 69, no. 2, 2005, pp. 219-227.

41.
  
M. Mitra, S. Gopalakrishnan, and M. Bhat, "A New Super Convergent Thin Walled Composite Beam Element for Analysis of Box Beam Structures," International Journal for Solids and Structures, vol. 41, 2004, pp. 1491-1518.

40.
  
A. Chakraborty, and S. Gopalakrishnan, "Wave Propagation in Inhomogeneous Layered Media: Solution of Forward and Inverse Problems," Acta Mechanica, vol. 169, 2004, pp. 153-185.

39.
  
R. Mahapatra, and S. Gopalakrishnan, "Spectral Finite Element Analysis of Coupled Wave Propagation in Composite Beams with Multiple Delaminations and Strip inclusions," International Journal for Solids and Structures, vol. 41, 2004, pp. 1173-1208.

38.
  
C. V S. Sastry, R. Mahaptra, S. Gopalakrishnan, and T. S. Ramamurthy, "Distributed Sensing of Static and Dynamic Fracture in Self-Sensing Piezoelectric Composite: Finite Element Simulations," International Journal for Intelligent Materials and Systems, vol. 15, 2004, pp. 339-354.

37.
  
S. Kumar, R. Mahaptra, and S. Gopalakrishnan, "A Spectral Finite Element for wave propagation and Structural Diagnostic Analysis in a Composite beam with Transverse Cracks," Finite Elements in Analysis and Design, vol. 40, 2004, pp. 1729-1751.

36.
  
M. Mitra, S. Gopalakrishnan, and M. Bhat, "Vibration Control in a composite box beam with Piezoelectric Actuators," Smart Materials and Structures, vol. 13, 2004, pp. 676-690.

35.
  
A. Chakraborty, and S. Gopalakrishnan, "A spectrally formulated finite element for wave propagation analysis in layered composite media," International Journal for Solids and Structures, vol. 41, no. 18, 2004, pp. 5155-5183.

34.
  
A. Grag, R. Mahaptra, S. Suresh, S. Gopalakrishnan, and S. Omkar, "Estimation of Composite Damage Model Parameters Using Spectral Finite Element and Neural Network," Composite Science and Technology, vol. 40, 2004, pp. 1729-1751.

33.
  
R. Ali, R. Mahaptra, and S. Gopalakrishnan, "An Analytical Model for Piezoelectric Flexible Thin Film Capacitive Sensors," Sensors and Actuators A: Physical, vol. 116, 2004, pp. 424-437.

32.
  
A. Chakraborty, and S. Gopalakrishnan, "A Higher Order Spectral element for Wave Propagation in Functionally Graded Materials," Acta Mechanica, vol. 172, 2004, pp. 17-43.

31.
  
D. Ghosh, and S. Gopalakrishnan, "Constitutive relationships of Magnetostrictive material: Coupled Model," Computers, Materials and Continua, vol. 1, no. 3, 2004, pp. 213-227.

30.
  
A. Chakraborty, and S. Gopalakrishnan, "Thermoelastic Wave Propagation in Anisotropic Layered Media : A Spectral Element Formulation," International Journal for Computational Methods, vol. 1, no. 3, 2004, pp. 535-567.

29.
  
N. Sahoo, R. Mahapatra, G. Jagadeesh, S. Gopalakrishnan, and K. Reddy, "An accelerometer balance system for measurement of aerodynamic force coefficients over blunt bodies in hypersonic shock tunnels," Measurement Science and Technology, vol. 14, no. 3, 2003, pp. 260-272.

28.
  
A. Chakraborty, S. Gopalakrishnan, and J. Reddy, "A New Beam Finite Element for the Analysis of Functionally Graded Materials," International Journal for Mechanical Sciences, vol. 45, 2003, pp. 519-539.

27.
  
R. Mahaptra, and S. Gopalakrishnan, "A Spectral Finite Element for Analysis of Wave Propagation in Uniform Composite Tubes," Journal of Sound and Vibration, vol. 268, no. 3, 2003, pp. 429-463.

26.
  
A. Chakraborty, and S. Gopalakrishnan, "Study of Poisson’s Contraction Effects in a Deep Laminated Composite Beam through a New Finite Element Formulation," Mechanics of Advanced Structures and Materials, vol. 10, 2003, pp. 1-21.

25.
  

24.
  
A. Nag, R. Mahapatra, S. Gopalakrishnan, and T. Sankar, "A Spectral Finite Element with Embedded Delamination for Modeling of Wave Scattering in Composite Beams," Composite Science and Technology, vol. 63, 2003, pp. 2187-2200.

23.
  
A. Chakraborty, R. Mahapatra, and S. Gopalakrishnan, "Finite Element Simulation of BAW Propagation in Inhomogeneous Plate due to Piezoelectric Actuation," Lecture Series in Computer Science-Springer-Verlag, vol. 2668, 2003, pp. 715-724.

22.
  
R. Mahaptra, and S. Gopalakrishnan, "A Nonlinear Spectral Element Model for Analysis of Wave propagation in Solids with internal Friction and Dissipation," Lecture Series in Computer Science-Springer-Verlag, vol. 2668, 2003, pp. 745-754.

21.
  
R. Mahapatra, and S. Gopalakrishnan, "Axial-Shear-Bending Coupled Wave Propagation in Thick Composite Beams," Composite Structures, vol. 59, no. 1, 2003, pp. 67-88.

20.
  
C. V S. Sastry, R. Mahapatra, S. Gopalakrishnan, and T. S. Ramamurthy, "Effect of Actuation Phase on the SIF in Delaminated Composite with Embedded Piezoelectric Layers," Smart Materials and Structures, vol. 12, 2003, pp. 602-611.

19.
  
C. V S. Sastry, R. Mahapatra, S. Gopalakrishnan, and T. S. Ramamurthy, "An Iterative System Equivalent Reduction Process for Extraction of High Frequency Response from Reduced Order Finite Element Model," Computer methods in Applied Mechanics and Engineering, vol. 192, no. 15, 2003, pp. 1821-1840.

18.
  
A. Jayachandran, S. Gopalakrishnan, and R. Narayanan, "Improved Secant Matrices for the Post buckling Analysis of thin Composite Plates," International Journal of Structural Stability and Dynamics, vol. 3, no. 2, 2003, pp. 355-375.

17.
  
A. Chakraborty, and S. Gopalakrishnan, "A Spectrally Formulated Finite Element for Wave Propagation in Functionally Graded Beams," International Journal for Solids and Structures, vol. 40, no. 10, 2003, pp. 2421-2448.

16.
  
E. Saida, N. Naik, and S. Gopalakrishnan, "An Experimental Investigation of a Smart Laminated Composite beam with Magnetostrictive Patch for Health Monitoring Applications," Structural Health Monitoring, vol. 2, no. 4, 2003, pp. 273-292.

15.
  
A. Chakraborty, R. Mahapatra, and S. Gopalakrishnan, "Finite Element Analysis of Free Vibration and Wave Propagation in Asymmetric Composite Beams with Structural Discontinuities," Composite Structures, vol. 55, 2002, pp. 23-36.

14.
  
S. Gopalakrishnan, "Behavior of Isoparametric Quadrilateral Family of Lagrangian Fluid Finite Element," International Journal for Numerical Methods in Engineering, vol. 54, no. 5, 2002, pp. 731-761.

13.
  
R. Mahapatra, and S. Gopalakrishnan, "An Active Spectral Element Model for PID Feedback Control of Wave Propagation in Composite Beams," Advances in Vibration Engineering, vol. 1, no. 2, 2002, pp. 165-175.

12.
  
A. Nag, R. Mahapatra, and S. Gopalakrishnan, "Identification of Delaminations in Composite Beams using Spectral Estimation and Genetic Algorithm," Smart Materials and Structures, vol. 11, no. 6, 2002, pp. 899-908.

11.
  
A. Nag, R. Mahapatra, and S. Gopalakrishnan, "Identification of Delamination in Composite Beam using a Damaged Spectral Element," Structural Health Monitoring, vol. 1, no. 1, 2002, pp. 105-126.

10.
  
A. Jayachandran, S. Gopalakrishnan, and R. Narayanan, "Explicit incremental matrices for the post buckling analysis of thin plates with small initial curvature," International Journal for Structural Engineering and Mechanics, vol. 12, no. 3, 2001, pp. 283-295.

9.
  
R. Mahapatra, S. Gopalakrishnan, and B. Balachandran, "Active Feedback Control of Multiple Waves in Helicopter Gearbox Support Struts," Smart Materials and Structures, vol. 10, no. 1046-1058, 2001.

8.
  
S. Gopalakrishnan, and G. Devi, "Behavior of Lagrangian Triangular Mixed Fluid Finite Elements," Sadhana, vol. 25, no. 1, 2000, pp. 21-35.

7.
  
S. Gopalakrishnan, and G. Devi, "A Lagrangian Quadratic Triangular Fluid Finite Element for Fluid-Structure Interaction Problems," International Journal for Computational Engineering Science, vol. 1, no. 2, 2000, pp. 257-272.

6.
  
S. Gopalakrishnan, "A Deep Rod Finite Element for Structural Dynamics and Wave propagation problems," International Journal for Numerical Methods in Engineering, vol. 48, 2000, pp. 731-744.

5.
  
R. Mahapatra, S. Gopalakrishnan, and T. Sankar, "Spectral Element Based Solutions for Wave propagation Analysis of Multiply Connected Unsymmetric Laminated Composite Beams," Journal of Sound and Vibration, vol. 257, no. 5, 2000, pp. 819-836.

4.
  
S. Gopalakrishnan, and J. Doyle, "Spectral Super-elements for Wave propagation in Structures with Local non-uniformities," Computer methods in Applied Mechanics and Engineering, vol. 121, 1995, pp. 77-90.

3.
  
M. Martin, S. Gopalakrishnan, and J. Doyle, "Wave propagation in Multiply Connected Deep waveguides," Journal of Sound and Vibration, vol. 174, no. 4, 1994, pp. 521-538.

2.
  
S. Gopalakrishnan, and J. Doyle, "Wave Propagation in Connected Waveguides of Varying Cross-section," Journal of Sound and Vibration, vol. 175, no. 3, 1994, pp. 347-363.

1.
  
S. Gopalakrishnan, M. Martin, and J. Doyle, "A Matrix Methodology for Spectral Analysis of Wave propagation in Multiple Connected Timoshenko Beams," Journal of Sound and Vibration, vol. 158, no. 1, 1992, pp. 11-24.

Book Chapters

9.
  
S. Gopalakrishnan, and S. Narendar, "Wave Propagation in Graphene," in Innovative Graphene Technologies, vol. 1, Chapter 11, Rapra-Smithers Publications, UK, 2013.

8.
  
N. Hu, R. Mahapatra, and S. Gopalakrishnan, "A Simplified Damage Model for Structural Health Monitoring of Metallic and Composite Structures," in Encyclopedia on Structural Health Monitoring-Simulation Section, vol. 2-Part 4, Chapter 44, John Wiley & Sons, UK, 2009.

7.
  
S. Gopalakrishnan, "Modeling Aspects In Finite Elements For Structural Health Monitoring," in Encyclopedia on Structural Health Monitoring-Simulation Section, vol. 2-Part 4, Chapter 42, John Wiley & Sons, Chincester, UK, 2009.

6.
  
S. Gopalakrishnan, "Constitutive Modeling Of Magnetostrictive Materials," in Encyclopedia on Structural Health Monitoring-Simulation Section, vol. 2-Part 4, Chapter 41, John Wiley & Sons, Chincester, UK, 2009.

5.
  
S. Gopalakrishnan, "Damage Detection Using Piezoceramic And Magnetostrictive Sensors And Actuators," in Encyclopedia on Structural Health Monitoring-Simulation Section, vol. 2-Part 4, Chapter 47, John Wiley & Sons, Chincester, UK, 2009.

4.
  
S. Gopalakrishnan, "Finite Elements: Modeling Of Piezoceramic And Magnetostrictive Sensors and Actuators," in Encyclopedia on Structural Health Monitoring-Simulation Section, vol. 2-Part 4, Chapter 43, John Wiley & Sons, Chincester, UK, 2009.

3.
  
S. Gopalakrishnan, "Spectral Finite Elements for Active Wave Control in Smart Composite Structures," in Progress in Smart Materials and Structures Research, Editor Robert L. Reece, , vol. , Nova Science Publishers, New York, USA, 2008.

2.
  
S. .Gopalakrishnan, and R. Mahapatra, "Active Control of Structure-Borne Noise in Helicopter Cabin Transmitted Through Gearbox Support Struts”," in IUTAM Symposium on Designing for Quietness, Solid Mechanics and Its Applications, Edited by Munjal, M.L.,, Kluwer Academic Publishers, Netherlands, 2002.

1.
  
A. Krishnamurthy, and S. .Gopalakrishnan, "Some Smart Structural Concepts for Health Monitoring of Composite Laminates," in Monograph on Structural Health Monitoring, Edited by Dattaguru B., Magalgiri, P.D. and Selvarajan, A. , Institute of Smart Structures and Systems (ISSS), Bangalore, India, 2002.

Disclaimer: Upload of any publication in electronic form throughout this website was required to conform respective publisher's requirements.

Ph.D.

13.
  
M.V.V.S Murthy, 2014. Wave Propagation in Honeycomb Sandwich Structures Using Spectral Finite Elements. (Thesis Submitted) External Registered student from ISRO Bangalore.


11.
  
Amuthan Arunkumar Ramabhadiran, 2012. Wave Propagation In Hyperelastic Waveguides. Presently working as Post-Doc at CALTECH, USA.


9.
  
G. Giridhara, 2010. Novel Damage Detection Methodologies for Structural health Monitoring of Metallic Structures. Quality Improvement Program Student from B M S College of Engineering.

8.
  
R. Gangadaran, 2010. Structural Health Monitoring of thin Plate like Structures using Active and Passive wave based methods. Presently working as a Post doc at University of Bristol, UK.

7.
  
Manish Trikha, 2010. Dynamics and Stability of a Launch Vehicle. External Registered student from ISRO Bangalore.


5.
  
G.N. Naik, 2007. Failure Mechanism Based Failure Theories in Laminated composite Structures. Currently Principle Research Scientist, Department of Aerospace Engineering, Indian Institute of Science, Bangalore. Worked towards his Ph.D as a staff registrant.

4.
  
Mira Mitra, 2007. Wavelet Based Spectral Finite Elements for Wave Propagation Analysis in Isotropic, Composite and Nano-composite Structure. Currently Assistant professor, Department of Aerospace Engineering, Indian Institute of Technology, Mumbai, India.




M.Sc. (Engg.)


4.
  
M.V.V.S Murthy, 2007. Development of Super-Convergent Finite Element for Accurate Prediction of Inter-Laminar Stresses in Laminated Composite Beams. External Registered student from ISRO Bangalore, who also continued for PhD.


2.
  
C.V.S Sastry, 2003. Distributed Sensing and Actuation of Delaminated Smart Composite Structures. Student got Best MSc (Engg) thesis award.

1.
  
G. Devi, 1998. Lagrangian Finite Elements for Dynamics of Fluid-Structure Interaction of Linear systems. This student was guided at IIT Chennai for M.S. Degree.

M.E.

22.
  


20.
  
C. Harika, 2010. Dispersion Characteristics and Damage Quantification in One Dimensional Cracked waveguides. Currently Pursuing PhD at Cambridge University.

19.
  

18.
  
R. B. Kulkarni, 2007. Spectrally formulated Finite Element for composite beams with Electrostrictive Material patches,. External Registered student from ISRO Bangalore.

17.
  
Priyank Gupta, 2007. Sensitivity of Damage force to Crack orientation. External Registered student from SAC Ahamadabad.

16.
  

15.
  
K. G. Vinod, 2006. Free Vibration and Wave Propagation Analysis of Uniform and Tapered Rotating Beams Using Spectrally Formulated Finite Elements. External Registered student from VSSC, Trivandrum. Joint student with Prof. R. Ganguli.

14.
  
A. Rampal, 2006. Active Control of Structure Borne Cabin Noise using Magnetostrictive Actuators. External Registered student from DRDO, Chandigargh.

13.
  
A. Rinku, 2005. A Function Space Approach to Study Chebyshev Timoshenko Beam Finite Element. External Registered student from NAL Bangalore.





8.
  
D. Sreekanth Kumar, 2003. Wave Propagation Analysis and Structural health Monitoring of Transversely Cracked Composite Beam Using a Damaged Spectral Finite Element. Srtudent is currently with General Electric, Jack Welch Center Bangalore.

7.
  



4.
  
Abir Chakraborty, 2001. A Refined First Order Shear Flexible Finite Element for Asymmetrically Laminated Composite Beam. Student is Currently with GE Electric, Jack Welch center, Bangalore.

3.
  
Sandeep Thakur, 2001. Higher Order Spectral Elements for Wave Propagation in Un-symmetric Laminated Composite Beams. Student is currently Head of the Airbus Office in Bangalore.


1.
  
P.V.V. Prasada Rao, 1996. Disturbance Propagation in Structural Networks,. Student was an M.Tech Student at IIT, Madras. This student was guided during the time spent at IIT Chennai.

  1. Honors and Awards
  2. • Alumni Award of Excellence in Research, Indian Institute of Science, 2013
  3. • Fellow, Indian Academy of Sciences (FASc), 2013
  4. • Fellow, Indian National Academy of Engineering (FNAE), 2005
  5. • Distinguished Alumnus Award, Indian Institute of Technology, Madras, Chennai, 2013
  6. • Distinguished Visiting Fellowship, Royal Academy of Engineering, UK, Research Exchanges with India/China, February 2012
  7. • Biren Roy Trust Award, Aeronautical Society of India for outstanding contribution in the field of Smart Structures and Structural Health Monitoring, December 2005
  8. • Satish Dhawan Young Scientist Award in Aerospace Sciences, Government of Karnataka
  9. • Research on Active Vibration Control was profiled as a Technology of future by the leading Technology Magazine Frost and Sullivan, USA, October 2002
  10. • David Ross Fellowship, Purdue University, USA, August 1989-August 1991.
  11. • Donnon Fellowship, Purdue University, U.S.A for outstanding performance in Graduate Studies in Aeronautics and Astronautics, May 1992.
  12. • I.I.T, Madras Institute Merit Prize for Best Academic Record in M.Tech in Engineering Mechanics discipline, July1987