Selected Publications

Articles In Academic Journals

Year Title
2015 Design and Comparison of Immersive Interactive Learning and Instructional Techniques for 3D Virtual Laboratories.  PRESENCE Journal. 93-112.
2011 Engineering Laboratory Instruction in Virtual Environment, eLIVE.  Advances in Engineering Education. 1-24.
2011 Lightning Strikes on Metal and Composite Aircraft and Their Mitigation.  Journal of Aerospace Sciences and Technologies. 208-222.
2005 Measurement of In-Plane Elastic Moduli of Composites with A circular Disk Specimen and Piezoelectric Sensors.  Polymer Composites. 542-551.
2005 Strain Measurement in a Shape Memory Alloy with Strain Gages.  Strain. 177-184.
2004 Compressive Behavior of Pultruded composite Plates with Circular Holes.  Composite Structures. 29-36.
2001 Determination of Elastic Constants of Composites with a Circular Disk Specimen.  Advanced Composites Letters. 127-133.
2001 Hole-Size effects in Pultruded Composites.  Mechanics of Composite Materials. 79-84.
2000 Compressive Properties of Pultruded composites.  Mechanics of Composite Materials. 781-790.
2000 Discussion of Novel Procedure for Complete In-Plane Composite Characterization Using a Single T-Shaped Specimen.  Experimental Mechanics. 96-97.
1997 A Blunt Notch Extended Compact Tension (BN-ECT) Specimen for the Study of Short and Long Crack Propagation.  Experimental Techniques. 24-26.
1997 Low-Velocity Wear Resistance of LaRC-SI and Blends Against Titanium.  Polymeric Materials Science and Engineering. 481-484.
1996 Load and Resistance Factor Design (LRFD) Approach for Bolted Joints in Pultruded Composites.  Composites: Part B. 351-360.
1996 Load and Resistance Factor Design (LRFD) Approach for Reinforced-Plastic Channel Beam Buckling.  Composites: Part B. 361-369.
1992 Experimental Mechanics Investigations of Composites, Part I: Mechanical and Photo-Mechanical Studies.  Materials Engineering. 261-269.
1992 Experimental Mechanics Investigations of Composites, Part II: Development of Novel Test Methods.  Materials Engineering. 271-277.
1992 Shape Optimization for a Composite Crack-length Sensor.  Experimental Techniques. 36-38.
1991 Application of Strain Gages to Measure the Adhesive Strains Through the Thickness of An Adhesively Bonded Stiffened Strip.  Experimental Techniques. 39-41.
1990 Application of Carbon-powder-polymer Composite as a Continuous Crack-length Sensor.  Experimental Mechanics. 332-335.
1990 Damage Assessment Through Electrical Resistance Measurement in Graphite Fiber Reinforced Composites.  Experimental Techniques. 16-20.
1989 A Fiber-optic Technique to Assess the Influence of Interfacial Friction in a Pin-loaded Hole.  Transactions of the Instrument Society of America. 35-39.
1987 A Fiber-optic Technique for the Measurement of Contact Angle in a Clearance-fit Pin-loaded Hole.  Experimental Techniques. 20-22.
1987 An Investigation of the Iosipescu and Asymmetrical Four-Point Bend Tests.  Experimental Mechanics. 57-63.
1987 Determination of Calibration Constants for the Hole-drilling Residual Stress Measurement Technique Applied to Orthotropic Composites Ñ Part I: Theoretical Considerations.  Composite Structures. 105-118.
1987 Determination of Calibration Constants for the Hole-drilling Residual Stress Measurement Technique Applied to Orthotropic Composites Ñ Part II: Experimental Evaluations.  Composite Structures. 165-172.
1987 Failure Modes for Polycarbonate Under Clearance-fit Pin-loading.  Polymer Engineering and Science. 1681-1687.
1986 A Photoelastic Investigation of Asymmetric Four Point Bend Shear Test for Composite Materials.  Composite Structures. 217-231.
1986 Investigation of Non-linear Contact for a Clearance-fit Bolt in a Graphite/Epoxy Laminate.  International Journal of Composite Structures. 77-85.
1986 Measurement of Contact Angle in a Clearance-fit Pin-loaded Hole.  Experimental Techniques. 25-27.
1985 Shear Testing of Composites.  Mechanika Teoretyczna I Stosowana (Theoretical and Applied Mechanics Journal published by the Polish Academy of Sciences). 607-615.
1984 Application Least-squares Method to Elastic and Photoelastic Calibration of Orthotropic Composites.  Experimental Mechanics. 17-21.
1984 State of the Art in Composite Materials Testing.  Current Engineering Practice. 1-10.
1982 Damping as Measure of Damage in Composites.  Journal of the Technical Councils of ASCE. 106-111.
1982 Discussion on The Relationship Between Tensile Strength and Flexure Strength in Fiber-Reinforced Composites.  Experimental Mechanics. 38-39.
1982 Extension of Hole-drilling Method to Birefringent Composites.  Polymer Composites. 40-43.
1982 Extension of Oblique Incidence Method to Photo-orthotropic-elasticity.  Experimental Mechanics. 462-467.
1982 Photo-orthotropic-elasticity: A New Technique for Stress Analysis of Composites.  Optical Engineering. 679-688.
1982 Photoelastic Investigation of Bolted Joints in Composites.  Composites. 253-256.
1981 Comment on Strength Prediction of Composite Laminates with Unloaded Fastener Holes.  AIAA Journal. p. 1375.
1981 On the Characteristic Dimension of Two-parameter Fracture Models.  International Journal of Fracture. R177-R180.
1981 Selection of Matrix Materials for Composites Based on Notch Sensitivity.  Transactions of the Canadian Society for Mechanical Engineering. 54-56.
1980 Discussion on A Unified Approach to Optical Constitutive Relations.  Experimental Mechanics. 178-180.
1980 Fabrication of Birefringent Anisotropic Model Materials.  Experimental Mechanics. 320-321.
1980 Holographically Determined Isopachics and Isochromatics in the Neighborhood of a Crack in a Glass Composite.  Experimental Mechanics. 53-56.
1980 Model Materials for Photo-orthotropic-elasticity.  Fibre Science and Technology. 1-11.
1980 Photoelastic Calibration of Orthotropic Model Materials.  Optica Acta. 429-433.
1980 Response of Composite Plates to Blast Loading.  Experimental Mechanics. 245-250.
1980 Separation of Principal Stresses in Photo-orthotropic-elasticity.  Fibre Science and Technology. 245-253.
1979 Application of Brittle Coatings on Orthotropic Materials.  Fibre Science and Technology. 11-19.
1979 Tensile Fracture of Composites with Circular Holes.  Materials Science and Engineering. 121-125.
1978 Notch Sensitivity of Polymers.  Journal of Applied Polymer Science. 3011-3022.
1977 Dynamic Response of Composite Plates with Cutouts, Part I: Simply Supported Plates.  Journal of Sound and Vibration. 549-564.
1977 Dynamic Response of Composite Plates with Cutouts, Part II: Clamped-clamped Plates.  Journal of Sound and Vibration. 565-576.
1977 Towards Stress-freezing in Orthotropic Model Materials.  Experimental Mechanics. 317-320.
1976 Discussion on the Birefringent Response of a Potential Photoelastic Material with Variable Elastic Properties.  Experimental Mechanics. p. 151.
1976 On the Application of Brittle Coatings to Graphite Fibre Reinforced Plastics.  AIAA Journal. 110-112.
1976 Stress-strain Models for Photo-orthotropic-elasticity.  Journal of Aeronautical Society of India. 165-169.
1976 The Interpretation of Isoclinics in Photo-orthotropic-elasticity.  Experimental Mechanics. 6-10.
1976 The Measurement of Shear-material-fringe-value in Photo-orthotropic-elasticity.  Journal of Aeronautical Society of India. 33-38.
1975 Discussion on Fiber-reinforced Birefringent Composite Materials.  Experimental Mechanics. p. 240.
1975 Discussion on Strain-optic Law for a Certain Class of Birefringent Composites.  Experimental Mechanics. p. 392.
1975 On the Stress-optic Law for Orthotropic Model Materials in Biaxial Stress Fields.  Experimental Mechanics. 29-34.
1975 Strain-optic Law for Orthotropic Model Materials.  AIAA Journal. 723-728.
1974 Glass Fibre Reinforced Plastics as Model Materials for Photoelasticity.  Reinforced Plastics. 31-33.
1974 Wave Motion in Anisotropic Media by Dynamic Photomechanics.  Experimental Mechanics. 433-439.
1973 Photoelastic Analysis of an Orthotropic Ring Under Diametral Compression.  AIAA Journal. 777-778.
1972 Application of Photo-orthotropic-elasticity.  Journal of Strain Analysis. 253-260.
1971 A Class of Zero-Birefringent Polymers.  Experimental Mechanics. 26-31.
1971 Photo-Orthotropic-Elasticity, Part I.  Experimental Mechanics. 346-352.
1971 Photo-Orthotropic-Elasticity, Part II.  Experimental Mechanics. 353-356.

Conference Papers

Year Title
2016 The Effect of Fiber Orientation Angle of the Unnotched, Open Hole, and Pin-Loaded Strength of a Pultruded Composite.  20C1-20C15.
2008 Workshop on Composite Materials for College Faculty
2008 Workshop on Composite Materials for Graduate Students
2002 Effect of Circular Hole on Compressive Behavior of Pultruded Composites
2001 Damage Resistance and Damage Tolerance of Pultruded Composite sheet Materials
2001 Experimental Techniques for Determining In-Plane Elastic Constants of Orthotropic Composites.  1-9.
2001 Recent Research in the Mechanical Behavior of Pultruded Composite Materials
2000 Hole-Size Effects in Pultruded Composites
1999 Flexural-Torsional Behavior of RP Channel Section Beams.  4A1-4A7.
1999 Lateral-Torsion response of FRP Beams under Three-Point Loading and LRFD Approach
1999 Modeling of Pultruded Composite Sheet Materials and Their Response Under Compressive Loading
1999 Tension, Compression and Flexure Properties of Pultruded Composites
1999 Ultrasonic Measurement of In-Plane Moduli of Pultruded composites
1998 An Experimental Investigation of Load-Sharing in a Multi-Bolt Pultruded Composite Joint.  355-368.
1998 Flexural Behavior and LRFD Approach for FRP-Reinforced Thermoplastic Beams.  18.
1998 LRFD Approach for Channel Section FRP Columns.  18.
1998 Stress Gradient Effects on Pultruded Composite Strength
1997 An Investigation of the Influence of Tightening Torque and Sea Water on Bolted Pultruded Composite Joints.  14D1-14D14.
1997 Low-Velocity Wear Resistance of LaRC-SI and Blends Against Metals
1997 Translaminate Fracture of Notched Transparent Continuous Fiber-Reinforced Composites
1997 Wear Results of an Advanced Polymeric Material for Use in Total Knee Replacements
1997 Yield Line Study of Concrete Slabs with FRP Rebars.  6C1-6C13.
1992 Novel Sensors for Continuous Crack-length Measurement
1991 Experimental Mechanics Investigations of Composites: Developments of Novel Test Methods
1991 Experimental Mechanics Investigations of Composites: Mechanical and Photo-mechanical Studies
1990 A New Nondestructive Method to Detect Fiber Damage in Carbon Fiber Reinforced Polymer Composites.  1-4.
1990 Continuous Crack Length Measurement with a Carbon Powder Polymer Composite.  187-192.
1989 A Method for Assessing Damage in Graphite Fiber Reinforced Composites.  982-987.
1987 Application of Optical and Photomechanical Techniques in the Study of Mechanical Joints.  199-202.
1986 A New Method for Measuring Contact Angle in Pin-Loaded Holes Simulating Bolted Joints
1986 An Analytical and Experimental Investigation of Contact Angle in a Bolted Composite Joint.  61-70.
1986 An Analytical and Experimental Study of Contact, Stresses and Failure in Clearance-fit, Pin-loaded Polycarbonate Specimens
1985 A Photoelastic Investigation of Asymmetric Four-Point Bend Shear Test for Composite Materials
1985 An Investigation of the Iosipescu and Asymmetrical Four-point Bend Tests for Composite Materials
1984 Experimental Mechanics of Fiber Reinforced Composites.  73-86.
1983 Simultaneous Elastic and Photoelastic Calibration of Birefringent Orthotropic Model Materials
1982 A Photoelastic Investigation of Bolted Joints in Composites
1982 Application of Least Squares Method to Photo-Orthotropic-elastic Calibration
1982 Application of Least Squares Method to the Measurement of Orthotropic Elastic Constants.  382-386.
1982 Location of Gages for Determining Orthotropic Elastic Constants.  81.
1982 Measurement of Elastic Constants of Orthotropic Composites
1981 Complete Stress Analysis of Composite Photoelastic Models by Oblique Incidence
1981 Determination of Principal Stresses in Birefringent Composites by Hole-drilling Method.  1-4.
1981 Effect of Stress Relieving Holes on the Strength of Perspex and Polycarbonate.  37-39.
1981 Photoelastic Techniques for the Complete Determination of Stresses in Composite Structures
1980 Application of Oblique Incidence Photoelastic Techniques to birefringent Composites.  121-128.
1979 Developments in Photo-orthotropic-elasticity.  559-585.
1979 Effect of Matrix Notch Sensitivity on Composite Notch Sensitivity.  115-116.
1979 Hole Size Effect in Composites
1978 Effect of Geometrical Discontinuities on Fatigue and Fracture Behavior of Composite Materials
1978 Free Vibration Characteristics of Clamped- Clamped Composite Plates with Circular Holes and Square Cutouts
1978 Free Vibration Characteristics of Simply Supported Composite Plates with Circular Holes and Square Cutouts
1977 Dynamic Response of Simply Supported Composite Plates with Cut-outs.  423-424.
1976 Anisotropy of Notch Sensitivity of Composite Materials
1975 Low-cycle Fatigue of Glass Fibre Reinforced Plastics
1975 Notch Sensitivity of GFRP Materials in the Low-cycle Fatigue Region.  1-6.
1975 Stress Concentration Factors in Composite Materials by Transmission Photoelasticity
A Photoelastic Study of Stress Waves in Fiber-reinforced Composites.  937-949.
An Experimental Investigation of Bolt-Preload Relaxation in Pultruded Composite Joints.  14E1-14E13.
Block Shear Failure Modes in Pultruded Composite Plate Connections.  10F1-10F7.
Effect of Notches on the Fatigue Behavior of Continuously Reinforced Composite Materials.  189-201.
Impact Load Response of Pultruded Fiberglass Grating.  24C1-24C6.

Grants

  • An Experimental Investigation of Damage Resistance and Damage Tolerance of Composite Materials  awarded by NASA, Marshall Space Flight Center 2001 - 2003
  • Automated Tow Placement Processing and Characterization of Composites  awarded by NASA, LaRC 2001 - 2002
  • PAC-3 Mentor-Protégé Composites Testing and Manufacturing Process Improvement  awarded by Small Business Development Center of Hampton Roads (Lockheed Martin Vought) 1999
  • A Comparison of Quasi-Static Indentation and Drop-Weight Impact Testing on Carbon/Epoxy Laminates  awarded by NASA, LaRC 1998 - 1999
  • PAC-3 Mentor-Protégé Composites Testing and Manufacturing Process Improvement  awarded by Small Business Development Center of Hampton Roads ( Lockheed Martin Vought) 1998 - 1999
  • Failure Characteristics of Honeycomb Sandwich Structures and Aircraft Alloys  awarded by NASA, LaRC 1997 - 1998
  • Mechanical Characterization of Ceramic-LaRC SI Polymer Composites for Wear-Resistant Applications  awarded by SBIR-Phase II Proposal 1996 - 1998
  • Applications of Biaxially Stretched Thermoplastic Polymers  awarded by GSRP Fellowship 1996 - 1997
  • Measurement of Mechanical Properties of Ceramic-Polymer Composites  awarded by Lo TEC (Low Thermal Expansion Ceramics) Co. 1996
  • Progressive Damage in Composites  awarded by NASA, LaRC 1995 - 1996
  • Characterization of the Behavior of Composite Shell Structures under Combined Mechanical and Internal Pressure Loading  awarded by GSRP Fellowship for Mark Robeson 1994 - 1995
  • Experimental Study of Time Dependent Behavior of Composites  awarded by NASA, LaRC 1994 - 1995
  • Progressive Damage in Composites  awarded by NASA, LaRC 1994 - 1995
  • Virginia Space Grant Consortium Graduate Fellowship for Mark Robeson 1994 - 1995
  • Characterization of the Behavior of Composite Shell Structures under Combined Mechanical and Internal Pressure Loading  awarded by GSRP Fellowship for Mark Robeson 1993 - 1994
  • Experimental Study of Time Dependent Behavior of Composite  awarded by NASA, LaRC 1993 - 1994
  • Progressive Damage in Composites  awarded by NASA, LaRC 1993 - 1994
  • Virginia Space Grant Consortium Graduate Fellowship for Mark Robeson 1993 - 1994
  • Characterization of the Behavior of Composite Shell Structures under Combined Mechanical and Internal Pressure Loading  awarded by GSRP Fellowship for Mark Robeson 1992 - 1993
  • Investigation of Progressive Damage in Composite Materials  awarded by NASA, LaRC 1992 - 1993
  • Time Dependent Behavior of Composites  awarded by NASA, LaRC 1992 - 1993
  • Virginia Space Grant Consortium Graduate Fellowship for Mark Robeson 1992 - 1993
  • Fatigue and Fracture of Aluminum Alloys  awarded by NASA, LaRC 1992
  • Investigation of Five-point Bend Test for Composites  awarded by NASA, LaRC 1991 - 1992
  • Role of Constituents in Organic-matrix Composites  awarded by NASA, LaRC 1991 - 1992
  • Time Dependent Behavior of Composites  awarded by NASA, LaRC 1991 - 1992
  • Thermal-mechanical Analysis of Metal Matrix Composites  awarded by NASA, LaRC 1991
  • Investigation of Five-point Bend Test for Composites  awarded by NASA, LaRC 1990 - 1991
  • Role of Constituents in Organic-matrix Composites  awarded by NASA, LaRC 1990 - 1991
  • Measurement of the Interfacial Strain Distribution in Adhesively Bonded, Stiffened Plate  awarded by NASA, LaRC 1989 - 1990
  • Measurement of Interfacial Strain Distribution in Adhesively Bonded, Stiffened Plate  awarded by NASA, LaRC 1988 - 1989
  • Investigation of Interfacial Strains in a Bonded Stiffened Plate  awarded by NASA, LaRC 1987 - 1988
  • A Study of the Strength and Toughness of Laminates Subjected to Bearing Loads  awarded by National Aeronautics and Space Administration/Langley Research Center 1985 - 1986
  • Residual Stress Measurements in Graphite/Polyimide Composites  awarded by National Aeronautics and Space Administration, LaRC 1985 - 1986
  • Structural Efficiency Studies of Advanced Aero thermal Compression Panels  awarded by NASA/LaRC 1985 - 1986
  • Development of an Algorithm and Computer code for 3-Dimensional Geometric Non-linear Analysis  awarded by NASA, LaRC 1985
  • A Photoelastic Investigation of Shear Tests for Composite Materials  awarded by National Aeronautics and Space Administration, LaRC 1984 - 1985
  • A Study of the Strength and Toughness of Laminates Subjected to Bearing Loads  awarded by National Aeronautics and Space Administration/Langley Research Center 1984 - 1985
  • Modeling of Low-Velocity Impact Damage of Continuous Fiber-Reinforced Composites  awarded by National Aeronautics and Space Administration/Langley Research Center 1984 - 1985
  • Modeling of Low-Velocity Impact Damage of Continuous Fiber-Reinforced Composites  awarded by National Aeronautics and Space Administration/Langley Research Center 1983 - 1984
  • Aero thermal Structural Concepts Study  awarded by National Aeronautics and Space Administration/Langley Research Center 1982 - 1983
  • An Investigation of Residual Stresses in Advanced Composites  awarded by National Aeronautics and Space Administration/Langley Research Center 1982 - 1983
  • Separation of Principal Stresses in Photo-Orthotropic-Elasticity  awarded by National Science Foundation 1981 - 1983
  • Aero thermal Structural Concepts Study  awarded by National Aeronautics and Space Administration/Langley Research Center 1981 - 1982
  • Equipment for Application of Photoelasticity to Composite Model Materials  awarded by National Science Foundation 1980 - 1981
  • Application of Photo-orthotropic-elasticity to Plane Problems in Composites  awarded by National Aeronautics and Space Administration/Langley Research Center 1979 - 1980
  • Photoelastic Studies of Advanced Lap Joint Concepts  awarded by National Aeronautics and Space Administration/Langley Research Center 1979
  • Stress Analysis and Low-Cycle Fatigue Behavior of Composite Materials  awarded by Atomic Energy Commission, government of India 1976 - 1979
  • Dynamic Response of Fibre Reinforced Composites  awarded by Aeronautics Research and Development Board, Ministry of Defense, Government of India 1973 - 1978

    • Education And Training

  • Ph.D. in Mechanical Eng., Mechanics/Materials Science, Illinois Institute of Technology 1970
  • M.E. in Machine Design, Indian Institute of Sciences 1967
  • B.S. in Mechanical Engineering, Indian Institute of Technology Madras 1965

    • Full Name

  • Ramamurthy Prabhakaran