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Conference Proceedings

Geetha, Kolappan G and Mahapatra, Roy D and Gopalakrishnan, S (2013) Guided Ultrasonic Wave Propagation through Inaccessible Damage in a Folded Plate using Sensor-Actuator Network. In: Conference on Health Monitoring of Structural and Biological Systems , 11-14, 2013, San Diego,.

Mukherjee, Sushovan and Gopalakrishnan, S (2013) A Guided Wave approach for the detection of damage in a structure having elements with periodic damage. In: Conference on Health Monitoring of Structural and Biological Systems, 11-14, 2013, San Diego.

Geetha, Kolappan G and Mahapatra, Roy D and Gopalakrishnan, S (2012) Guided Wave based Damage Detection in a Composite T-joint using 3D Scanning Laser Doppler Vibrometer. In: Conference on Health Monitoring of Structural and Biological Systems, MAR 12-15, 2012 , San Diego, CA, USA.

Chakraborty, N and Mahapatra, Roy D and Gopalakrishnan, S (2012) Ultrasonic Guided Wave Characterization and Damage Detection in Foam-core Sandwich Panel using PWAS and LDV. In: Conference on Health Monitoring of Structural and Biological System, March 12-15, 2012, San Diego, CA, USA.

Gopalakrishnan, S (2008) Modeling of magnetostrictive materials and structures. In: International Workshop on Smart Devices - Modeling of Material Systems, JAN 10-12, 2008, Chennai.

Conference Paper

Geetha, Kolappan G and Rathod, MT and Mahapatra, Roy D and Gopalakrishnan, S (2012) Lamb wave based detection of damage in a stiffener bonded to a plate. In: SPIE Smart Structures/NDE Conference, March 06, 2012, San Diego, California, USA.

Kishor, N and Gopalakrishnan, S and Ganguli, R (2009) A Legendre Spectral Element for Modeling Acoustic Fluids. In: IISc Centenary International Conference and Exhibition in Aerospace Engineering, 18-22 May 2009, IISc, Bangalore, India.

Naik, Narayana G and Anandatheertha, Sunil and Rao, Subba P and Gopalakrishnan, S (2009) Strength prediction and failure mechanisms of single walled carbon nanotube reinforced nanocomposite systems. In: ICEAE 2009, IISc Centenary International Conference and Exhibition on Aerospace Engineering, 18-22 May, 2009, IISC.

Kishor, N and Ganguli, R and Gopalakrishnan, S (2009) Uncertainty Quantification of Sloshing Motion in Partially Filled Rectangular Tanks. In: IISc Centenary International Conference and Exhibition in Aerospace Engineering, 18-22 May 2009, IISc, Bangalore, India.

Rathod, VT and Roy, Mahapatra D and Gopalakrishnan, S (2009) A circular Array of Piezoelectric Sensors for Lamb Wave Based Structural Health Monitoring. In: IISc Centenary International Conference and Exhibition on Aerospace Engineering ICEAE , 18-22 May, 2009, Bangalore, India.

Naik, Narayana G and Anandatheertha, Sunil and Rao, Subba P and Gopalakrishnan, S (2009) Nanomechanics based Finite Element and Sub-Structuring Methodology for the bottom-up analysis of CNT reinforced polymer nanocomposite. In: IISc Centenary International Conference and Exhibition on Aerospace Engineering, 18-22 May, 2009, IISC.

Rathod, VT and Roy, Mahapatra D and Gopalakrishnan, S (2009) Lamb wave based identification and parameter estimation of corrosion in metallic plate structure using a circular PWAS array. In: Proc. of SPIE Smart Structures/NDE Conference, 8-12 March, 2009, San Diego, California, USA.

Naik, Narayana G and Anandatheertha, Sunil and Rao, Subba P and Gopalakrishnan, S (2009) Failure Analysis of Single Walled Carbon Nanotubes Reinforced Nanocomposite Structures. In: 25th Annual In-House Symposium on Space Science and Technology, ISRO-IISc Space Technology Cell, 30 January 2009, IISC.

Naik, Narayana G and Anandatheertha, Sunil and Rao, Subba P and Gopalakrishnan, S (2009) Young’s Modulus of Single Walled Zigzag Carbon Nanotubes. In: National Conference on MEMS, Smart Structures and Materials.

Arunkumar, A and Gopalakrishnan, S (2008) Analysis of Wave Propagation in 1D Waveguides with First Order Material Nonlinearity Using the Spectral Finite Element Method. In: 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Schaumburg, IL, USA, Schaumburg, IL.

Trikha, M and Mahapatra, DR and Gopalakrishnan, S and Pandiyan, R (2008) Analysis of aeroelastic stability of aslender launch vehicle using aerodynamic data. In: AIAA Aerospace Science Meeting, Reno, Nevada, Reno.

Trikha, M and Gopalakrishnan, S and Mahapatra, DR and Pandiyan, R (2008) Influence of combustion coupled follower force and mass sensitivity on launch vehicle stability. In: AIAA Structures, Structural Dynamics and Materials Conf., Schaumburg, IL.

Apetre, N and Ruzzene, M and Hanagud, S and Gopalakrishnan, S (2008) Nonlinear Spectral Methods for the Analysis of Wave Propagation. In: 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Schaumburg, IL, USA, Schaumburg, IL.

Gopalakrishnan, S (2008) Sensing of Fracture Parameters in Self Sensing Peizoelectric Composites. In: Interquadrennial Conference of the International Congress on Fracture, IISc, Bangalore, IISc, Bangalore.

Panchal, M and Mahapatra, DR and Gopalakrishnan, S and Bhat, MR (2008) Ultrasonic signal sensitivity due to crack parameters and computational approach based on wavelet energy correlated damage index. In: AIAA Structures, Structural Dynamics and Materials Conf., Schaumburg, IL, Schaumburg, IL.

Mitra, M and Gopalakrishnan, S (2008) Wave Propagation Analysis in Single- Walled Carbon Nanotube- Polymer Composite with Imperfect Bonding. In: 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Schaumburg, IL, USA, Schaumburg, IL.

Ajith, V and Gopalakrishnan, S (2008) An approximate spectral finite element for a delaminated composite beam. In: 5th International Conference on Smart Materials Structures and Systems, IISc, Bangalore.

Panchal, MB and Chenagani, SS and Mahapatra, DR and Gopalakrishnan, S and Bhat, MR (2008) A structural health monitoring system using a Lamb wave sensor network and a wavelet energy correlation technique. In: Proc. ISSS Conference on Smart Materials Structures and Systems, Bangalore, Bangalore.

Gopalakrishnan, S (2007) Application of Spectral Finite elements for Active Control of Smart Composite Structures. In: Sixteenth National, Aerospace Structures Seminar (XVI NASAS , Park College of Engineering, Coimbatore, October 15-16, 2007, Coimbatore.

Mitra, Mira and Gopalakrishnan, S (2007) Axisymmetric Wave Propagation in Single-Walled Carbon Nanotube. In: 48th AIAA /ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference Waikiki, Hawaii, USA, 23-26, April 2007, Hawaii.

Gopalakrishnan, S and Mahapatra, DR and Murthy, CRL and Bhat, MR and Gangadharan, R (2007) Damage Characterization using PWAS and Time-Frequency Signal Analysis. In: International and INCCOM-6 Conference on future trends in Composite materials and Processing, Dec 12-14 2007, IIT, Kanpur.

Gopalakrishnan, S and Ruzzene, M and Hanagud, S and Mitra, Mira (2007) Damage Index Formulation Based on the Filtered Spectral Approximation of the Structural Response. In: 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Waikiki, Hawaii, USA, 23-26, April 2007, Hawaii.

Gopalakrishnan, S and Mitra, Mira and Ruzzene, M and Hanagud, S (2007) Frequency Domain- Based Damage Index for Structural Health Monitoring Using Laser Vibrometry. In: 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Waikiki, Hawaii, USA, 23-26, April 2007, Hawaii.

Gopalakrishnan, S (2007) Recent Research in Structural Health Monitoring. In: Second National Conference on Smart Materials, Structures and MEMS (ISSS-MEMS, 2007), Central Electronic Research Institute (CEERI), Pilani, Rajasthan, India, December 15-16, 2007, Rajasthan.

Gangadharan, R and Gopalakrishnan, S and Murthy, CRL and Bhat, MR (2007) Structural health monitoring of metallic structures using Lamb waves. In: National seminar on Non-Destructive Evaluation NDE-2007, Nov 28-30 2007, Vadodara.

Gopalakrishnan, S (2007) Wave propagation based damage measures for Structural health Monitoring. In: Recent Advances in Structural Engineering (RDSE 2007), Manipal Institute of Technology, Manipal, India, August 30-Sept 2, 2007, Manipal.

Mitra, M and Gopalakrishnan, S (2006) Wavelet based spectral finite element modelling and detection of de-lamination in composite beams. In: 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Material Conference, May 2-4 2006, USA.

Mahapatra, Roy D and Gopalakrishnan, S and Hu, N (2006) Spectral Finite Element Modeling of Complex Structures for Applications in Real-time Structural Health Monitoring. In: 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Material Conference, May 2-4 2006, USA.

Eslavath, Saidha and Naik, Narayana G and Gopalakrishnan, S and Kumar, M (2003) Sensing of delamination in laminated composite beams using multiple magnetostrictive patches. In: SPIE: Smart Materials, Structures, and Systems, 12-14 December, Bangalore, India, Vol.5062, 691-699.

Ghosh, DP and Gopalakrishnan, S (2003) Structural health monitoring in a composite beam using magnetostrictive material through a new FE formulation. In: SPIE: Smart Materials, Structures, and Systems, 12-14 December, Bangalore, India, Vol.5062, 704-711.

Gopalakrishnan, S and Mahapatra, Debiprosad R (2001) Optimal spectral control of multiple waves in smart composite beams with distributed sensor-actuator configuration. In: SPIE:Smart Materials, 13-15 December 2000, Melbourne, Australia, Vol.4234 52-63.

Journal Article

Ramabathiran, Amuthan Arunkumar and Gopalakrishnan, S (2014) Automatic finite element formulation and assembly of hyperelastic higher order structural models. In: APPLIED MATHEMATICAL MODELLING, 38 (11-12). pp. 2867-2883.

Dattaguru, B and Gopalakrishnan, S (2014) Foreword to Composites for the 21st Century: Current & Future Trends. In: MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, 21 (3, SI). p. 171.

Chellappan, Vinita and Gopalakrishnan, S and Mani, V (2014) Frequency Domain Based Solution for Certain Class of Wave Equations: An exhaustive study of Numerical Solutions. In: CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES, 97 (2). pp. 131-174.

Nanda, Namita and Kapuria, S and Gopalakrishnan, S (2014) Spectral finite element based on an efficient layerwise theory for wave propagation analysis of composite and sandwich beams. In: JOURNAL OF SOUND AND VIBRATION, 333 (14). pp. 3120-3137.

Samaratunga, Dulip and Jha, Ratneshwar and Gopalakrishnan, S (2014) Wave propagation analysis in laminated composite plates with transverse cracks using the wavelet spectral finite element method. In: FINITE ELEMENTS IN ANALYSIS AND DESIGN, 89 . pp. 19-32.

Vagbharathi, AS and Gopalakrishnan, S (2014) An extended finite element model coupled with level set method for stable pitting corrosion. In: PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 891-89 . pp. 254-260.

Vagbharathi, AS and Gopalakrishnan, S (2014) An extended finite-element model coupled with level set method for analysis of growth of corrosion pits in metallic structures. In: PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 470 (2168).

Patra, Amit K and Gopalakrishnan, S and Ganguli, Ranjan (2014) A spectral multiscale method for wave propagation analysis: Atomistic-continuum coupled simulation. In: COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 278 . pp. 744-764.

Ajith, V and Gopalakrishnan, S (2013) Wave propagation in stiffened structures using spectrally formulated finite element. In: European Journal of Mechanics - A/Solids, 41 . pp. 1-15.

Kumar, Prasanna TJ and Narendar, S and Gopalakrishnan, S (2013) Thermal vibration analysis of monolayer graphene embedded in elastic medium based on nonlocal continuum mechanics. In: Composite Structures, 100 . pp. 332-342.

Gopalakrishnan, S (2013) Lamb Wave Propagation in Laminated Composite Structures. In: JOURNAL OF THE INDIAN INSTITUTE OF SCIENCE, 93 (4). pp. 699-713.

Ajith, V and Gopalakrishnan, S (2013) Wave propagation in a porous composite beam: Porosity determination, location and quantification. In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 50 (3-4). pp. 556-569.

Ramabathiran, Amuthan Arunkumar and Gopalakrishnan, S (2012) Automatic energy-momentum conserving time integrators for hyperelastic waves. In: JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 236 (18, SI). pp. 4700-4711.

Narendar, S and Gupta, SS and Gopalakrishnan, S (2012) Wave propagation in single-walled carbon nanotube under longitudinal magnetic field using nonlocal Euler-Bernoulli beam theory. In: APPLIED MATHEMATICAL MODELLING, 36 (9). pp. 4529-4538.

Chakraborty, N and Rathod, VT and Mahapatra, Roy D and Gopalakrishnan, S (2012) Guided wave based detection of damage in honeycomb core sandwich structures. In: NDT & E INTERNATIONAL, 49 . pp. 27-33.

Satish, N and Narendar, S and Gopalakrishnan, S (2012) Thermal vibration analysis of orthotropic nanoplates based on nonlocal continuum mechanics. In: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 44 (9). pp. 1950-1962.

Narendar, S and Ravinder, S and Gopalakrishnan, S (2012) Study of non-local wave properties of nanotubes with surface effects. In: Computational Materials Science, 56 . pp. 179-184.

Narendar, S and Gopalakrishnan, S (2012) Temperature effects on wave propagation in nanoplates. In: COMPOSITES PART B-ENGINEERING, 43 (3). pp. 1275-1281.

Ramabathiran, Amuthan Arunkumar and Gopalakrishnan, S (2012) Time and Frequency Domain Finite Element Models for Axial Wave Analysis in Hyperelastic Rods. In: Mechanics of Advanced Materials and Structures, 19 (1-3). pp. 79-99.

Narendar, S and Gopalakrishnan, S (2012) Scale effects on buckling analysis of orthotropic nanoplates based on nonlocal two-variable refined plate theory. In: Acta Mechanica, 223 (2). pp. 395-413.

Deepak, BP and Ganguli, Ranjan and Gopalakrishnan, S (2012) Dynamics of rotating composite beams: A comparative study between CNT reinforced polymer composite beams and laminated composite beams using spectral finite elements. In: International Journal of Mechanical Sciences, 64 (1). pp. 110-126.

Narendar, S and Gopalakrishnan, S (2012) Nonlocal continuum mechanics based ultrasonic flexural wave dispersion characteristics of a monolayer graphene embedded in polymer matrix. In: COMPOSITES PART B-ENGINEERING, 43 (8). pp. 3096-3103.

Narendar, S and Gopalakrishnan, S (2012) Nonlocal continuum mechanics formulation for axial, flexural, shear and contraction coupled wave propagation in single walled carbon nanotubes. In: LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES, 9 (4). pp. 497-513.

Narendar, S and Gopalakrishnan, S (2012) Study of terahertz wave propagation properties in nanoplates with surface and small-scale effects. In: INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 64 (1). pp. 221-231.

Narendar, S and Gupta, SS and Gopalakrishnan, S (2011) Longitudinal Magnetic Field Effect on Nonlocal Ultrasonic Vibration Analysis of Single-Walled Carbon Nanotubes Based on Wave Propagation Approach. In: Advanced Science Letters, 4 (11-12). pp. 3382-3389.

Narendar, S and Gopalakrishnan, S (2011) Spectral Finite Element Formulation for Nanorods via Nonlocal Continuum Mechanics. In: Journal of Applied Mechanics, 78 (6).

Narendar, S and Gopalakrishnan, S (2011) Ultrasonic Wave Dispersion Characteristics of Fluid-Filled Single-Walled Carbon Nanotubes Based on Nonclassical Shell Model. In: Advanced Science Letters, 4 (11-12). pp. 3480-3485.

Narendar, S and Gopalakrishnan, S (2011) Axial wave propagation in coupled nanorod system with nonlocal small scale effects. In: Composites Part B: Engineering, 42 (7). pp. 2013-2023.

Narendar, S and Gopalakrishnan, S (2011) A Revisit to Capture the Entire Behavior of Ultrasonic Wave Dispersion Characteristics of Single Walled Carbon Nanotubes Based on Nonlocal Elasticity Theory and Flugge Shell Model. In: Journal of Computational and Theoretical Nanoscience, 8 (10). pp. 1933-1944.

Ajith, V and Gopalakrishnan, S (2011) Spectral Element Approach to Wave Propagation in Uncertain Composite Beam Structures. In: Journal of Vibration and Acoustics, 133 (5).

Kishor, Krishna D and Ganguli, Ranjan and Gopalakrishnan, S (2011) Uncertainty analysis of vibrational frequencies of an incompressible liquid in a rectangular tank with and without a baffle using polynomial chaos expansion. In: Acta Mechanica, 220 (1-4). pp. 257-273.

Narendar, S and Mahapatra, Roy D and Gopalakrishnan, S (2011) Ultrasonic wave characteristics of a monolayer graphene on silicon substrate. In: Composite Structures, 93 (8). pp. 1997-2009.

Narendara, S and Mahapatra, Roy D and Gopalakrishnan, S (2011) Prediction of nonlocal scaling parameter for armchair and zigzag single-walled carbon nanotubes based on molecular structural mechanics, nonlocal elasticity and wave propagation. In: International Journal of Engineering Science, 49 (6). pp. 509-522.

Narendar, S and Gopalakrishnan, S (2011) Critical buckling temperature of single-walled carbon nanotubes embedded in a one-parameter elastic medium based on nonlocal continuum mechanics. In: Physica E: Low-dimensional Systems and Nanostructures, 43 (6). pp. 1185-1191.

Naik, Narayana G and Omkar, SN and Mudigere, Dheevatsa and Gopalakrishnan, S (2011) Nature inspired optimization techniques for the design optimization of laminated composite structures using failure criteria. In: Expert Systems with Applications, 38 (3). pp. 2489-2499.

Omkar, SN and Senthilnath, J and Khandelwal, Rahul and Naik, Narayana G and Gopalakrishnan, S (2011) Artificial Bee Colony (ABC) for multi-objective design optimization of composite structures. In: Applied Soft Computing, 11 (1). pp. 489-499.

Sudhakar, V and Vijayaraju, K and Gopalakrishnan, S (2010) Development of a New Finite Element for the Analysis of Sandwich Beams with Soft Core. In: Journal of Sandwich Structures and Materials, 12 (6). pp. 649-683.

Anandatheertha, Sunil and Naik, Narayana G and Gopalakrishnan, S and Rao, Subba P (2010) High accuracy curve fits for chirality, length and diameter dependent initial modulus of single walled carbon nanotubes. In: Physica E: Low-dimensional Systems and Nanostructures, 43 (1). pp. 252-255.

Giridhara, G and Rathod, VT and Naik, S and Mahapatra, Roy D and Gopalakrishnan, S (2010) Rapid localization of damage using a circular sensor array and Lamb wave based triangulation. In: Mechanical Systems and Signal Processing, 24 (8). pp. 2929-2946.

Narendar, S and Gopalakrishnan, S (2010) Strong nonlocalization induced by small scale parameter on terahertz flexural wave dispersion characteristics of a monolayer graphene. In: Physica E: Low-dimensional Systems and Nanostructures, 43 (1). pp. 423-430.

Gangadharan, R and Bhat, MR and Murthy, CRL and Gopalakrishnan, S (2010) A geodesic-based triangulation technique for damage location in metallic and composite plates. In: Smart Materials and Structures, 19 (11).

Narendar, S and Mahapatra, Roy D and Gopalakrishnan, S (2010) Investigation of the effect of nonlocal scale on ultrasonic wave dispersion characteristics of a monolayer graphene. In: Computational Materials Science, 49 (4). pp. 734-742.

Trikha, M and Mahapatra, Roy D and Gopalakrishnan, S and Pandiyan, R (2010) Structural stability of slender aerospace vehicles: Part I Mathematical modeling. In: International Journal of Mechanical Sciences, 52 (7). pp. 937-951.

Narendar, S and Gopalakrishnan, S (2010) Ultrasonic wave characteristics of nanorods via nonlocal strain gradient models. In: Journal of Applied Physics, 107 (8). 084312-1-084312-8.

Kishor, D Krishna and Gopalakrishnan, S and Ganguli, Ranjan (2010) A Legendre spectral element model for sloshing and acoustic analysis in nearly incompressible fluids. In: Journal of Computational Physics, 229 (7). pp. 2605-2624.

Ajith, V and Gopalakrishnan, S (2010) Spectral element approach to wave propagation in uncertain beam structures. In: Journal of Mechanics of Materials and Structures, 5 (4). pp. 637-659.

Ali, Rizwaan and Mahapatra, DR and Gopalakrishnan, S (2010) Time Domain Characteristics of Electrical Measures for a Piezoelectric Thin Film to Identify Defects in the Substrate. In: Structural Health Monitoring, 9 (2). pp. 173-192.

Narendar, S and Gopalakrishnan, S (2010) Non local scale effects on ultrasonic wave characteristics nanorods. In: Physica E: Low-dimensional Systems and Nanostructures, 42 (5). pp. 1601-1604.

Narendar, S and Gopalakrishnan, S (2010) Terahertz wave characteristics of a single-walled carbon nanotube containing a fluid flow using the nonlocal Timoshenko beam model. In: Physica E: Low-dimensional Systems and Nanostructures, 42 (5). pp. 1706-1712.

Narendar, S and Gopalakrishnan, S (2009) Nonlocal scale effects on wave propagation in multi-walled carbon nanotubes. In: Computational Materials Science, 47 (2). pp. 526-538.

Gangadharan, R and Murthy, CRL and Gopalakrishnan, S and Bhat, MR (2009) Time reversal technique for health monitoring of metallic structure using Lamb waves. In: Ultrasonics, 49 (8). pp. 696-705.

Gangadharan, R and Prasanna, G and Bhat, MR and Murthy, CRL and Gopalakrishnan, S (2009) Acoustic emission source location and damage detection in a metallic structure using a graph-theory-based geodesic pproach. In: Smart materials structures, 18 (11).

Gangadharan, R and Prasanna, G and Bhat, MR and Murthy, CRL and Gopalakrishnan, S (2009) Acoustic emission source location in composite structure by Voronoi construction using geodesic curve evolution. In: Journal Of The Acoustical Society Of America, 126 (5). pp. 2324-2330.

Omkar, SN and Khandelwal, Rahul and Ananth, TVS and Naik, Narayana G and Gopalakrishnan, S (2009) Quantum behaved Particle Swarm Optimization (QPSO) for multi-objective design optimization of composite structures. In: Expert Systems with Applications, 36 (8). pp. 11312-11322.

Trikha, M and Gopalakrishnan, S and Mahapatra, D Roy and Pandiyan, R (2009) Dynamic Instabilities in Slender Space Launch Vehicles under Propulsive Thrust and Aerodynamic Forces. In: Computer Modeling in Engineering and Sciences, 45 (2). pp. 97-139.

Mitra, Mira and Gopalakrishnan, S (2009) Wave propagation in multi-walled carbon nanotube. In: Computational Materials Science, 45 (2). pp. 411-418.

Gangadharan, R and Mahapatra, D Roy and Gopalakrishnan, S and Murthy, CRL and Bhat, MR (2009) On the sensitivity of elastic waves due to structural damages:Time-frequency based indexing method. In: Journal of Sound and Vibration, 320 (4-5). pp. 915-941.

Omkar, SN and Khandelwal, Rahul and Yathindra, Santhosh and Naik, Narayana G and Gopalakrishnan, S (2008) Artificial immune system for multi-objective design optimization of composite structures. In: Engineering Applications of Artificial Intelligence, 21 (8). pp. 1416-1429.

Apetre, Nicole and Ruzzene, Massimo and Hanagud, Sathyanaraya and Gopalakrishnan, S (2008) A wave-based damage index for the analysis of the filtered response of damaged beams. In: Journal of Mechanics of Materials and Structures, 3 (9). pp. 1605-1623.

Naik, Narayana G and Gopalakrishnan, S and Ganguli, Ranjan (2008) Design optimization of composites using genetic algorithms and failure mechanism based failure criterion. In: Composite Structures, 83 (4). pp. 354-367.

Apetre, N and Ruzzene, M and Hanagud, S and Gopalakrishnan, S (2008) Spectral and Perturbation Analysis of First-Order Beams With Notch Damage. In: Journal of Applied Mechanics, 75 (3). 031019-1-031019-10.

Ali, Rizwaan and Mahapatra, Roy D and Gopalakrishnan, S (2008) Electrostatic measures for a piezoelectric thin film with an embedded crack in the substrate: I. Mode I. In: Smart Materials Structures, 17 (2). 025037-1-025037-9.

Mitra, Mira and Gopalakrishnan, S (2008) Wave Characteristics of Multi-Walled Carbon Nanotubes. In: CMES: Computer Modeling in Engineering & Sciences, 27 (1-2). pp. 125-136.

Omkar, SN and Mudigere, Dheevatsa and Naik, Narayana G and Gopalakrishnan, S (2008) Vector evaluated particle swarm optimization (VEPSO) for multi-objective design optimization of composite structures. In: Computers & Structures, 86 (1-2). pp. 1-14.

Mitra, Mira and Gopalakrishnan, S and Ruzzene, Massimo and Apetre, Nicole and Hanagud, S (2008) Perturbation technique for wave propagation analysis in a notched beam using wavelet spectral element modeling. In: Journal of Mechanics of Materials and Structures, 3 (4). pp. 659-673.

Mitra, Mira and Gopalakrishnan, S (2007) Wave propagation in imperfectly bonded single walled carbon nanotube-polymer composites. In: Journal of Applied Physics, 102 . 084301.

Mitra, Mira and Gopalakrishnan, S (2007) Wave propagation in imperfectly bonded single walled carbon nanotube-polymer composites. In: Journal Of Applied Physics, 102 (8). 084301-1-084301-8.

Vinod, KG and Gopalakrishnan, S and Ganguli, Ranjan (2007) Free vibration and wave propagation analysis of uniform and tapered rotating beams using spectrally formulated finite elements. In: International Journal of Solids and Structures, 44 (18-19). pp. 5875-5893.

Ghosh, DP and Gopalakrishnan, S (2007) A superconvergent finite element for composite beams with embedded magnetostrictive patches. In: Composite Structures, 79 (3). pp. 315-330.

Hu, N and Wang, HH and Yan, B and Fukunaga, H and Mahapatra, Roy D and Gopalakrishnan, S (2007) The partition of unity finite element method for elastic wave propagation in Reissner-Mindlin plates. In: International Journal for Numerical Methods in Engineering, 70 (12). pp. 1451-1479.

Roy Mahapatra, D and Ghosh, DP and Gopalakrishnan, S (2007) Multiscale finite element modelling of pattern formation in magnetostrictive composite thin film. In: International Journal for Multiscale Computational Engineering, 4 (3). pp. 337-349.

Mitra, Mira and Gopalakrishnan, S (2007) Vibrational characteristics of single-walled carbon- nanotube:Time and frequency domain analysis. In: Journal of Applied Physics, 101 (11). p. 114320.

Hu, N and Fukunaga, H and Kameyama, M and Mahapatra, Roy D and Gopalakrishnan, S (2007) Analysis of Wave Propagation in Beams With Transverse and Lateral Cracks Using a Weakly Formulated Spectral Method. In: Journal of Applied Mechanics, 74 (1). pp. 119-127.

Sahoo, Niranjan and Mahapatra, DR and Jagadeesh, G and Gopalakrishnan, S and Reddy, KPJ (2007) Design and analysis of a flat accelerometer-based force balance system for shock tunnel testing. In: Measurement, 40 (1). pp. 93-106.

Vignesh, PS and Mitra, Mira and Gopalakrishnan, S (2007) Nano-composite insert in 1D waveguides for control of elastic power flow. In: Nanotechnology, 18 (3). 035706:1-10.

Murthy, MVVS and Gopalakrishnan, S and Nair, PS (2007) A New Locking Free Higher Order Finite Element Formulation for Composite Beams. In: Computers, Materials & Continua, 5 (1). pp. 43-62.

Mitra, Mira and Gopalakrishnan, S (2007) Wavelet spectral element for wave propagation studies in pressure loaded axisymmetric cylinders. In: Journal of Machanics of Materials and Structures, 2 (4). pp. 753-772.

Vinod, KG and Gopalakrishnan, S and Ganguli, R (2006) Wave Propogation Characteristics of Rotating Uniform Euler-Bernoulli Beams. In: Computer Modeling in Engineering & Sciences, 16 (3). pp. 197-208.

Mitra, Mira and Gopalakrishnan, S (2006) Extraction of wave characteristics from wavelet-based spectral finite element formulation. In: Mechanical Systems and Signal Processing, 20 (8). pp. 2046-2079.

Chakraborty, A and Gopalakrishnan, S (2006) A Spectral Finite Element Model for Wave Propagation Analysis in Laminated Composite Plate. In: Journal of Vibration and Acoustics, 128 (4). pp. 477-488.

Mitra, Mira and Gopalakrishnan, S (2006) Wavelet based spectral finite element for analysis of coupled wave propagation in higher order composite beams. In: Composite Structures, 73 (3). pp. 263-277.

Mitra, Mira and Gopalakrishnan, S (2006) Wave propagation analysis in carbon nanotube embedded composite using wavelet based spectral finite elements. In: Smart Materials and Structures, 15 (1). pp. 104-122.

Agarwal, S and Chakraborty, A and Gopalakrishnan, S (2006) Large deformation analysis for anisotropic and inhomogeneous beams using exact linear static solutions. In: Composite Structures, 72 (1). pp. 91-104.

Chakraborty, A and Sivakumar, MS and Gopalakrishnan, S (2006) Spectral element based model for wave propagation analysis in multi-wall carbon nanotubes. In: International Journal of Solids and Structures, 43 (2). pp. 279-294.

Mitra, Mira and Gopalakrishnan, S (2006) Wavelet Based 2-D Spectral Finite Element Formulation for Wave Propagation Analysis in Isotropic Plates. In: Computer Modeling in Engineering & Sciences, 15 (1). pp. 49-68.

Mahapatra, Roy D and Singhal, A and Gopalakrishnan, S (2006) A higher-order finite waveguide model for spectral analysis of composite structures. In: Computer Methods in Applied Mechanics and Engineering, 195 (9&12). pp. 1116-1135.

Ali, Rizwan and Mahapatraa, DR and Gopalakrishnan, S (2006) A quasi-three-dimensional approach to modeling and analysis of a constrained piezoelectric thin film. In: Acta Materialia, 54 (20). pp. 5529-5540.

Ghosh, DP and Gopalakrishnan, S (2005) Coupled analysis of composite laminate with embedded magnetostrictive patches. In: Smart Materials & Structures, 14 (6). pp. 1462-1473.

Mahapatra, Roy D and Singhal, A and Gopalakrishnan, S (2005) Lamb wave characteristics of thickness-graded piezoelectric IDT. In: Ultrasonics, 43 (9). pp. 736-746.

Prasad, Raghu BK and Bharatkumar, BH and Murthy, Ramachandra DS and Narayanan, R and Gopalakrishnan, S (2005) Fracture Mechanics Model for Analysis of Plain and Reinforced High-Performance Concrete Beams. In: Journal of Engineering Mechanics, 131 (8). pp. 831-838.

Mitra, Mira and Gopalakrishnan, S (2005) Spectrally formulated wavelet finite element for wave propagation and impact force identification in connected 1-D waveguides. In: International Journal of Solids and Structures, 42 (16-17). pp. 4695-4721.

Naik, Narayana G and Murty, Krishna AV and Gopalakrishnan, S (2005) A failure mechanism based failure theory for laminated composites including the effect of shear stress. In: Composite Structures, 69 (2). pp. 219-227.

Chakraborty, A and Gopalakrishnan, S (2005) A spectral finite element for axial-flexural-shear coupled wave propagation analysis in lengthwise graded beam. In: Computational Mechanics, 36 (1). pp. 1-12.

Ali, R and Mahapatra, Roy D and Gopalakrishnan, S (2005) Constrained piezoelectric thin film for sensing of subsurface cracks. In: Smart Materials and Structures, 14 . pp. 376-386.

Murthy, MVVS and Mahapatra, Roy D and Badarinarayana, K and Gopalakrishnan, S (2005) A refined higher order finite element for asymmetric composite beams. In: Composite Structures, 67 (1). pp. 27-35.

Ali, R and Mahapatra, Roy D and Gopalakrishnan, S (2005) Analysis of Constrained Piezoelectric Layer: A Two-Dimensional Coupled Electromechanical Model. In: Ferroelectrics, 329 . pp. 1035-1041.

Mahapatra, Roy D and Suresh, S and Omkar, SN and Gopalakrishnan, S (2005) Estimation of degraded laminate composite properties using acoustic wave propagation model and a reduction-prediction network. In: Engineering Computations, 22 (7). pp. 849-876.

Murty, Krishna AV and Naik, Narayana G and Gopalakrishnan, S (2005) Towards a Rational Failure Criterion for Unidirectional Composite Laminae. In: Mechanics of Advanced Materials and Structures, 12 (2). pp. 147-157.

Chakraborty, A and Gopalakrishnan, S and Kausel, E (2005) Wave propagation analysis in inhomogeneous piezo-composite layer by the thin-layer method. In: International Journal for Numerical Methods in Engineering, 64 (5). pp. 567-598.

Chakraborty, A and Gopalakrishnan, S (2005) A spectrally formulated plate element for wave propagation analysis in anisotropic material. In: Computer Methods in Applied Mechanics and Engineering, 194 (42-44). pp. 4425-4446.

Garg, AK and Mahapatra, Roy D and Suresh, S and Gopalakrishnan, S and Omkar, SN (2004) Estimation of composite damage model parameters using spectral finite element and neural network. In: Composites Science and Technology, 64 (16). pp. 2477-2493.

Ali, R and Mahapatra, Roy D and Gopalakrishnan, S (2004) An analytical model of constrained piezoelectric thin film sensors. In: Sensors and Actuators A: Physical, 116 (3). pp. 424-437.

Kumar, Sreekanth D and Roy, Mahapatra D and Gopalakrishnan, S (2004) A spectral finite element for wave propagation and structural diagnostic analysis of composite beam with transverse crack. In: Finite Elements in Analysis and Design, 40 (13-14). pp. 1729-1751.

Mitra, Mira and Gopalakrishnan, S and Bhat, Seetharama M (2004) Vibration control in a composite box beam with piezoelectric actuators. In: Smart Materials and Structures, 13 . pp. 676-690.

Chakraborty, A and Gopalakrishnan, S (2004) Wave propagation in inhomogeneous layered media: solution of forward and inverse problems. In: Acta Mechanica, 169 (1-4). pp. 153-185.

Mahapatra, Roy D and Gopalakrishnan, S (2004) Spectral finite element analysis of coupled wave propagation in composite beams with multiple delaminations and strip inclusions. In: International Journal of Solids and Structures, 41 (5-6). pp. 1173-1208.

Mitra, Mira and Gopalakrishnan, S and Bhat, Seetharama M (2004) A new super convergent thin walled composite beam element for analysis of box beam structures. In: International Journal of Solids and Structures, 41 (5-6). pp. 1491-1518.

Roy Mahapatra, D and Gopalakrishnan, S (2003) A spectral finite element for analysis of wave propagation in uniform composite tubes. In: Journal of Sound and Vibration, 268 (3). pp. 429-463.

Nag, A and Mahapatra, Roy D and Gopalakrishnan, S and Sankar, TS (2003) A spectral finite element with embedded delamination for modeling of wave scattering in composite beams. In: Composites Science and Technology, 63 (15). pp. 2187-2200.

Chakraborty, A and Gopalakrishnan, S (2003) Poisson's contraction effects in a deep laminated composite beam. In: Mechanics of Advanced Materials and Structures, 10 (3). pp. 205-225.

Sastry, CVS and Mahapatra, Roy D and Gopalakrishnan, S and Ramamurthy, TS (2003) Effect of the actuation phase on the SIF in delaminated composites with embedded piezoelectric layers. In: Smart Materials and Structures, 12 (4). pp. 602-611.

Chakraborty, A and Gopalakrishnan, S (2003) Various numerical techniques for analysis of longitudinal wave propagation in inhomogeneous one-dimensional waveguides. In: Acta Mechanica, 162 (1-4). 01-27.

Chakraborty, A and Gopalakrishnan, S (2003) A spectrally formulated finite element for wave propagation analysis in functionally graded beams. In: International Journal of Solids and Structures, 40 (10). pp. 2421-2448.

Sastry, CVS and Mahapatra, Roy D and Gopalakrishnan, S and Ramamurthy, TS (2003) An iterative system equivalent reduction expansion process for extraction of high frequency response from reduced order finite element model. In: Computer Methods in Applied Mechanics and Engineering, 192 (15). pp. 1821-1840.

Sahoo, Niranjan and Mahapatra, DR and Jagadeesh, G and Gopalakrishnan, S and Reddy, KPJ (2003) An accelerometer balance system for measurement of aerodynamic force coefficients over blunt bodies in a hypersonic shock tunnel. In: Measurement Science and Technology, 14 (3). pp. 260-272.

Chakraborty, A and Gopalakrishnan, S and Reddy, JN (2003) A new beam finite element for the analysis of functionally graded materials. In: International Journal of Mechanical Sciences, 45 (3). pp. 519-539.

Mahapatra, Roy D and Gopalakrishnan, S (2003) A spectral finite element model for analysis of axial–flexural–shear coupled wave propagation in laminated composite beams. In: Composite Structures, 59 (1). pp. 67-88.

Nag, A and Mahapatra, Roy D and Gopalakrishnan, S (2002) Identification of delamination in composite beams using spectral estimation and a genetic algorithm. In: Smart Materials and Structures, 11 (6). pp. 899-908.

Chakraborty, A and Mahapatra, Roy D and Gopalakrishnan, S (2002) Finite element analysis of free vibration and wave propagation in asymmetric composite beams with structural discontinuities. In: Composite Structures, 55 (1). pp. 23-36.

Gopalakrishnan, S (2002) Behaviour of isoparametric quadrilateral family of Lagrangian fluid finite elements. In: International Journal for Numerical Methods in Engineering, 54 (5). pp. 731-761.

Mahapatra, Roy D and Gopalakrishnan, S and Balachandran, B (2001) Active feedback control of multiple waves in helicopter gearbox support struts. In: Smart Materials and Structures, 10 (5). pp. 1046-1048.

Jayachandran, SA and Gopalakrishnan, S and Narayanan, R (2001) Explicit incremental matrices for the postbuckling analysis of thin plates with small initial curvature. In: Structural Engineering And Mechanics, 127 (3). pp. 283-295.

Gopalakrishnan, S and Devi, G (2000) A Lagrangian Quadratic Triangular Fluid Finite Element for Fluid-Structure Interaction Problems. In: International Journal of Computational Engineering Science, 1 (2). pp. 257-272.

Mahapatra, Roy D and Gopalakrishnan, S and Sankar, TS (2000) Spectral-Element-Based Solutions for Wave Propagation Analysis of Multiply Connected Unsymmetric Laminated Composite Beams. In: Journal of Sound and Vibration, 237 (5). pp. 819-836.

Gopalakrishnan, S and Devi, G (2000) Behaviour of Lagrangian triangular mixed fluid finite elements. In: Sadhana, 25 (1). pp. 21-35.

Gopalakrishnan, S (2000) A deep rod finite element for structural dynamics and wave propagation problems. In: International Journal for Numerical Methods in Engineering, 48 (5). pp. 731-744.

Editorials/Short Communications

Chakraborty, A and Mahapatra, Roy D and Gopalakrishnan, S (2003) Finite element simulation of BAW propagation in inhomogeneous plate due to piezoelectric actuation. In: Lecture Notes in Computer Science, 2668 . pp. 715-724.

Mahapatra, Roy D and Gopalakrishnan, S (2003) A nonlinear spectral finite element model for analysis of wave propagation in solid with internal friction and dissipation. In: Lecture Notes in Computer Science, 2668 . pp. 745-754.

This list was generated on Thu Sep 18 19:42:30 2014 IST.