| 1965 | Sixth International
Congress on Space Technology and Science, Tokyo, Japan.
"Instability and Oscillations of an Elastic Strip Under Finite Stretch." |
|
| 1966 | SIAM National meeting,
Madison, Wisconsin.
"Galerkin's Solution to a severely Non-linear Problem of Finite Elastodynamics." |
|
| 1969 | Second CANCAM, Waterloo,
Canada.
"A Perturbation method as Applied to Problems of Finite Elastodynamic Deformation." |
|
| 1970 | Army Symposium on
Solid Mechanics and Structures, Watertown, Mass.
"Elastic Wave Front Analysis in Unidirectional Composites." |
|
| 1971 | International Symposium
on Computer-Aided Engineering, Waterloo, Canada.
"Large Amplitude Oscillations of Laminated Thick-walled Spherical Shells Using Galerkin's Method" |
|
| 1973 | Tenth National Meeting,
Society of Engineering Science, N. C. State University.
"Experiment on the Sudden Collapse of Thick-walled Tubes Undergoing Large Elastic Deformations." |
|
| 1974 | ASTM Symposium on
Composite Reliability, La Vegas, Nevada
"Thermoelastic Expansion of Graphite-Epoxy Unidirectional and Angle-ply Composites." |
|
| International Symposium
on Mechanical Behavior of Materials, Kyoto, Japan.
"Time-temperature Creep of a Graphite-Epoxy Composite." |
||
| 1975 | AIAA/SAE 11th Propulsion
Conference, Anaheim, Ca.
"Mechanical Behavior of a Polyester Composite Propellant." |
|
| AIAA/SAE 11th Propulsion
Conference, Anaheim, Ca.
"Humidity effects on the Creep Behavior of a Graphite-Epoxy Composite Material." |
||
| ASME Winter Annual
Meeting, Houston Texas.
"On Elastic Oscillations of a Thick-walled Cylindrical Shell Subjected to Initial Finite Twist. " |
||
| 1976 | Army Symposium on
Solid Mechanics and Structures, Cape Cod, Mass.
"Moisture Effects on the Dynamic Toughness of Graphite-Epoxy Composites." |
|
| 1977 | Symposium on Application
of Computer Methods in Engineering, Los Angeles, Ca.
"Analysis of Free Edge Induced Fracture in Fiber Composite Laminates." |
|
| 14th Annual Meeting,
Society of Engineering Science, Lehigh University, Pa.
"Edge Stress Singularity in Finite Width Composite Laminates." |
||
| 1978 | ASTM 5th Meeting
on Composites, New Orleans.
"Environmental Effects on the Compressive Strength of Composite Laminates." |
|
| ICCM - II, Toronto,
Canada.
"Alteration of Laminate Free-edge Stresses by Moisture Sorption." |
||
| ASME Winter Annual
Meetings, San Francisco, Ca.
"A Non-linear Micro-buckling Model Predicting the Compressive Strength of Unidirectional Composites." |
||
| DoD-NASA Mechanics
of Composite Review. Bergamo Center, Dayton, Oh.
"Statistical Failure Analysis of Composites." |
||
| 1979 | ASTM Symposium on
Fatigue of Fibrous Composite Materials, San Francisco, Ca.
"Effects of Proof-Tests on the Strength and Fatigue Life of a Unidirectional Composite." |
|
| 29th Mechanical
Failure Prevention Symposium, NBS, Gaithersburg, Md.
"Interlaminar and Intralaminar Failure in Epoxy-based Composite laminates." |
||
| ASME Winter Annual
Meetings, New York.
"An Energy Method for Multiple Transverse Cracks in Graphite-Epoxy Laminates." |
||
| 1980 | ASME Centennial
Meetings, San Francisco, Ca.
"Size Effect on Strength and Fatigue of a Short Fiber Composite Material." |
|
| ICCM - III, Paris,
France.
"Growth Mechanisms of Transverse Cracks and Ply Delamination in Composite Materials." |
||
| ICCM - III, Paris,
France.
"Creep Behavior of Glass-Epoxy Composite Laminates Under Hygrothermal Conditions." |
||
| ASTM Symposium on
Damages in Composite Materials, Bal Harbor, Florida.
"The Dependence of Transverse Cracking and Delamination on Ply Thickness in Graphite- Epoxy Laminates." |
||
| DoD-NASA Mechanics
of Composite Review. Bergamo Center, Dayton, Oh.
"Delamination Fracture Mechanisms." |
||
| 17th Annual Meeting,
Society of Engineering Science, Atlanta, Ga.
"Static and Fatigue Fracture Behavior of A Notched Short Fiber Composite." |
||
| 1981 | Second USA-USSR
Symposium on Fracture of Composite Materials, Lehigh Univ. Pa.
"The Fracture mechanics of Transverse Cracking and Delamination in Composites." |
|
| 1982 | U. S. Congress of
Applied Mechanics, Cornell Univ. Ithaca, NY.
"Stress Analysis of A Multi-layered Plate with a Circular Hole Under Axisymmetric Bending." |
|
| ICCM - IV, Tokyo,
Japan
"On Mixed-mode Fracture in Off-Axis Unidirectional Graphite-Epoxy Composite." |
||
| ASME Winter Annual
Meetings, Phoenix, AZ.
"A Theory for Multiple Transverse Cracks in Composite laminates." |
||
| DoD-NASA Mechanics
of Composite Review. Dayton. Oh.
"Mechanics of Delamination Under Compressive Loads" |
||
| 1983 | AGARD (NATO) Specialists
Meetings on Defects in Composite Materials, London.
"Fracture Mechanics of Sublaminate Cracks in Composite Laminates." |
|
| U. S. Naval Symp.
on NDE and Criticality of Defects in Composite materials, Phila. Pa.
"Interlaminar Stress Fields as Influenced by Two Interacting Flaws." |
||
| 20th Annual Meeting,
Society of Engineering Science, Univ. Delaware, Newark, DE.
"Effects of Curing Stress on Interlaminar Cracking in Graphite-Epoxy Laminates." |
||
| ASME Winter Annual
Meetings, Boston, MA.
"A Stochastic Model for the Growth of Matrix Cracks in Graphite-Epoxy Laminates" |
||
| ASME Winter Annual
Meetings, Boston, MA.
"Influence of Ply Thickness on Damage Accumulation and Final Failure." |
||
| ASTM Symp. on Delamination
and Debonding in Composite materials, Pittsburgh, Pa.
"Delamination Crack Growth in Graphite-Epoxy Laminates." |
||
| DoD-NASA Mechanics
of Composite Review. Dayton, Oh.
"Interlaminar and Intralaminar Fracture Growth in Composite Laminates." |
||
| 1984 | ASTM Symp. on Composite
Materials: Testing and Design. Philadelphia, Pa.
"A Cumulative Damage Model for Matrix Crack Growth in Composite Laminates." |
|
| International Symp.
on Composites: Materials and Engineering. Univ. Delaware, Newark, DE.
"On Crack Development in Graphite-Epoxy [02/90n]s Laminates Under Uniaxial Tension." |
||
| 21st Annual Meeting,
Society of Engineering Science, VPI & SU, Blacksburg, Va.
"3-D Stress Fields Near Several Interacting Matrix Cracks in Composite Laminates." |
||
| ASME Winter Annual
Meetings, New Orleans, La.
"On the Strain Energy Release Rate for a Crack at the Interface of Two Bonded Materials." |
||
| DoD-NASA Mechanics
of Composite Review. Dayton, Oh.
"Cumulative Damage Model for Advanced Composite Materials" |
||
| 1985 | ASME Summer Meetings,
Univ. New Mexico, Albuquerque, NM.
"Application of Fracture Mechanics to Matrix Cracks in Laminates". |
|
| ICCM - V, San Diego,
CA.
"Cumulative Delamination Growth in Laminates Subjected to Variable Amplitude Cyclic Loads". |
||
| 22nd Annual Meeting,
Society of Engineering Science, Penn State Univ. Pa.
"Fracture Analysis of Matrix Cracks in Laminates". |
||
| 22nd Annual Meeting,
Society of Engineering Science, Penn State Univ. Pa.
"Three Dimensional Stresses in Notched Composite Laminates". |
||
| 1986 | 27th AIAA/ASME/ASCE/AHS
SDM Conference, San Antonio, Texas
"A Study on the Effect of 90o-Ply on Matrix Cracks in Composite Laminates. |
|
| International
Symp. on Composites and Structures, Beijing, China
"On Fracture Mechanics of Matrix Cracking in Composite Laminates". |
||
| ASME Winter Annual
Meetings, Anaheim, CA.
"Fatigue Delamination Growth in Laminated Composites". |
||
| 1987 | Second Technical
Conference, Society for Composites. Univ. Delaware, Newark, DE
"Three Dimensional Simulation of Crack Growth in Notched Laminates". |
|
| ASTM Symp. on Composite
Materials: Fatigue and Fracture. Cincinnati, Oh.
"Fatigue Growth of Free Edge Delamination in S2/CE-9000 Glass-Epoxy Laminates". |
||
| ASME Winter Annual
Meetings, Boston, MA
"Simulation of Matrix Cracks in Composite Laminates Containing a Small Hole". |
||
| ASME Winter Annual
Meetings, Boston, MA.
"Fracture Due to a Kinked Crack in Unidirectional Fiber-reinforced Composites". |
||
| 28th AIAA/ASME SDM
Conference, Monterey, CA.
"Mesomechanics: The Microstructure-Mechanics Connection". |
||
| DoD-NASA Mechanics
of Composite Review. Bal harbor, Florida.
"On Modeling Intralaminar and Interlaminar Cracks in Graphite-Epoxy laminates". |
||
| 1988 | 4th USA-Japan Symposium
on Composite Materials, Washington, DC
"Mixed-Mode Strain Energy Release Rates for a Cracked Unidirectional Composite". |
|
| ASTM Symp. on Composite
Materials: Testing and Design. Reno, Nev.
"A Criterion for Mixed-mode Matrix Fracture in Graphite-Epoxy Composites". |
||
| 29th Annual Meeting,
Society of Engineering Science, Berkeley, CA.
"Effective Flaws as Material Property for Matrix Cracking in Composite Laminates". |
||
| 29th Annual Meeting,
Society of Engineering Science, Berkeley, CA.
"Stochastic Simulation of Fatigue Delamination Growth". |
||
| ASME Winter Annual
Meetings. Chicago, IL.
"Interface Bonding and Matrix Cracking in Brittle Matrix Composites". |
||
| ASME Winter Annual
Meetings. Chicago, IL.
"A Finite Cell Model for 3-D Braided Composites". |
||
| Annual Convention
of Chinese Institute of Engineers, Newark, NJ
"The Role Fiber-Matrix Interface on Strength and Toughness of Ceramic Matrix Composite Materials". |
||
| 1989 | 1st USSR-USA Symposium
On Composite Materials, Riga, USSR.
"On Fiber-Matrix Interface Bonding and Composite Toughness". |
|
| Symposium on High
Temperature Composites, American Society for Composites, Dayton, OH.
"Matrix Cracking Initiation in Brittle Matrix Composites - Experiment and Predictions". |
||
| Symposium on High
Temperature Composites, American Society for Composites, Dayton, OH.
"Micromechanics of 3-D Braided MMC." |
||
| NASA and DOD Mechanics
of Composites Review, Dayton, Ohio..
"Matrix Crack Initiation in Ceramic Matrix Composites". |
||
| 1990 | Guest Speaker, Southwest
Mechanics Lecture Series (SwRI, Texas A&M, SMU, U of Houston), March
19-23,.
"On Some Basic Concepts of Strength in Composite Materials". |
|
| Seventh CIMTEC World
Ceramic Congress, Montecantini, Italy, June.
"Matrix Cracking Stresses in Uniaxially Fiber-Reinforced Ceramic Matrix Composites". |
||
| NASA/Boeing Composites
Review, Seattle, Washington.
"Time-dependent Matrix Cracking in Composite Laminates". |
||
| 1990 Composites
Symposium, Center for Composite Materials, Univ. Delaware.
"Mechanics of Composite Materials". |
||
| 1991 | Invited Speaker,
Center for Composite Materials, University of Delaware.
Six (6) 2-hour lecture series on "Micromechanics for Composite Materials". |
|
| ASTM Symposium on
Composite Materials: Fatigue and Fracture. Indianapolis.
"Temperature and Fracture Toughness Effects on Mixed-mode Matrix Splitting". |
||
| 1st Canadian International
Composites Conference and Exhibition, Montreal.
"In-situ Observation of Matrix Cracking Initiation in Ceramic Matrix Composites" |
||
| 6th Annual Technical
Conference, American Society for Composites, Albany, NY.
"The Fiber Pull-Out Problem: Matching of Singular and Complete Stress Fields". |
||
| 2nd USSR-USA Symposium
on Mechanics of Composite Materials, Albany, NY.
"Mechanics of Matrix Damage in Ceramic Matrix Composites". |
||
| NASA-DoD Mechanics
of Composites Review, Dayton, OH.
"A Comprehensive Study on Matrix Fracture in Ceramic Matrix composites". |
||
| 1992 | 2nd International
Symposium for Composite Materials and Structures, Beijing.
Keynote Lecture: "A Probabilistic-Mechanistic Approach of Damage Mechanics for Fiber- Reinforced Composites”. |
|
| 2nd International
Symposium for Composite Materials and Structures, Beijing.
"Fracture Initiation in Ceramic Matrix Composites". |
||
| 2nd International
Symposium for Composite Materials and Structures, Beijing.
"A Criterion for Splitting Crack Initiation in Unidirectional Fiber-Reinforced Composites". |
||
| 7th Technical Conference
on Composite Materials, American Society for Composites, Penn State Univ.
"On Fiber Matrix Interfacial Stresses During Fiber Pullout with Thermal Stressing". |
||
| Fiber-Tex '92 -
the 6th Conference on Advanced Engineering Fibers and Textile Structures
for Composites. Drexel Univ.
"The Yarn Structure in 3-D Braided Composites and Evaluation of Their Mechanical Properties". |
||
| International Conference
On Computational Engineering Science (ICES 92), Hongkong Univ.
of Science Technology. " The Single Fiber Pullout Problem with Perfectly Bonded Interface". |
||
| 1993 | ASTM 5th Symposium
on Composite Materials: Fatigue and Fracture, Atlanta, Ga.
"A Fracture Criterion for Fiber-Wise Splitting". |
|
| First Joint ASCE-EMD,
ASME-AMD,SES Meeting, Charlottesville, Va.
"Fracture Mechanics and Damage Mechanisms in Fibrous Composites". |
||
| First Joint ASCE-EMD,
ASME-AMD,SES Meeting, Charlottesville, Va.
"Stress Distributions in Single fiber Pullout Model with Frictional fiber-Matrix Interface". |
||
| 8th Technical Conference
on Composite Materials, American Society for Composites, Cleveland, OH.
“Numerical Simulation of fiber Pullout and Interfacial Strength with Frictional Interface.” |
||
| NASA Workshop on
Scaling Effects in Composite Materials and Structures.
"Scaling Effects of Defects in Composite Materials". |
||
| Taiwan Workshop
on Engineering Education Reform in the USA, Taipei, Taiwan.
"A Microscopic View of Drexel University's E-4 Curriculum for Engineering". |
||
| 1994 | 1st International
Mesomechanics and Mesostructrues Specialist Meeting, Univ. of Toronto.
"Microstructure-Property Relationships in 3-D Braided Fiber Composites". |
|
| 9th Technical Conference
on Composite Materials, American Society for Composites, Univ.Delaware
"On Topological Mapping of Yarn Structures in 3-D Braided Composites". |
||
| The 1st International
Conference on Composites Engineering, New Orleans.
"Analysis of Fiber Pullout With Friction Sliding Fiber-Matrix Interface". |
||
| 9th Technical Conference
on Composite Materials, American Society for Composites, Univ. Delaware
"Evaluation of Frame/Skin Bond Strength and Durability for Advanced Composite Fuselage Crown Structure," |
||
| 1995 | ASME Symposium Composite
Materials, UCLA.
"Yarn Structures in 3-D Braided Composites Due to Complex Shape Change" |
|
| ICCM-10, Vancouver,
Canada
"Spatial Distribution of Yarns and Thermomechanical Properties in 3-D Braided Tubular Composites" |
||
| International Symposium
on Innovative Processing and Characterization of Composite Materials, ASME
WAM, San Francisco.
"Thermoelastic Properties of 3-D Braided Composites: Predictions and Experiment" |
| 1996 | ASME Mechanics and
Materials Conference, John Hopkins Univ.
"Compression Failure of A Unidirectional Composite by the IITRI Test Method" |
|
| International Conference
on Advanced Materials, Beijing, China.
"Formability of 3-D Braided Composites" |
||
| ASME Winter Annual
Meeting, Atlanta.
"Failure Mechanisms of 3D Braided Composites Under Pure Bending" |
||
| 1997 | ICCM-11, Brisban,
Australia.
"Stiffness and Strength Properties in 3-D Braided Structural Shapes" |
|
| ASME Winter Annual
Meeting, Dallas.
"Rational Analysis Methodology for 3D Braided Fibrous Composites" |
||
| 1998 | The Eighth
Japan-US Conference on Composite Materials, Baltimore, Md.
"Local and Global Properties in 3-D Braided Structural Shapes” |
|
| NATO ASI, Mechanics
of Composite Materials and Structures Workshop, Troia, Portugal
Five-part lecture on “Micromechanics Analysis of Composite Materials”: Part I: Micromechanics
and Composite Microstructures
|
||
| ASME Winter Annual
Meeting, Anaheim CA.
“Free Edge Delamination in Layered Composites - A Historical Review of the Past 30 Years” |
||
| 1999 | Invited Speaker,
Nowinski Symposium University of Delaware.
"De-homogenization of Fiber-reinforced Composite materials" |
|
| Invited Speaker,
Composites-2000- An International Symposium, Univ. of Del.
"On Ply Failure Criteria in Laminate Design" |
||
| 2000 | American Society
for Composites 15th Annual Technical Meeting, Texas A & M Univ.
"A Design and Analysis Methodology for 3D Braided Structural Shapes" |
|
| ASME Winter Annual
Meeting, Orlando, FL.
"An Assessment of the Ply-Failure Criteria Used in Laminate Design." |
||