Chin-Teh Sun

1968 - Neil A. Armstrong Distinguished Professor of Aeronautics and Astronautics

Degrees

Ph.D., Northwestern University, 1967
M.S., Theoretical and Applied Mechanics, Northwestern University, 1965
B.S., Civil Engineering, National Taiwan University, Taiwan, 1962

Contact

701 W. Stadium Ave.
West Lafayette, IN 47907-2045

Office Phone: +1 765 49-45130
Office Fax: +1 765 494 0307
Email: sun@purdue.edu
Webpage: http://purdue.edu/aae/cml

Interests

Composites
Fracture Mechanics
Structural Dynamics
Smart Materials and Structures
Nano Materials
Acoustic Metamaterials

Awards and Major Appointments

AIAA Fellow
ASME Fellow
ASC Fellow
Research Award for excellence in faculty research, Schools of Engineering, Purdue University, 2004.
ASTM Committee D-30 Wayne W. Stinchcomb Memorial Award, 2004
Inaugural CT Sun Research Award, School of Aeronautics and Astronautics, Purdue University, 2004
Sigma Xi Purdue University Faculty Research Award, 2005
Listed as ISI Highly Cited Researcher in the Materials Science category, 2006.
ASME Warner T. Koiter Medal, 2007
Inaugural AIAA/ASC James H. Starnes Award, 2009
Alumni Merit Award, Northwestern University, 2010

Research Areas

  • Development of Engineering Molecular Mechanics — The two most widely used numerical methods suitable for molecular simulations are Molecular Statics (MS) and Molecular Dynamics (MD). While MD simulations can be used to simulate systems at any temperature, they involve enormous computational resources and, hence, pose a crippling limitation on the size and time scales of the systems that can be modeled. On the other hand, MS simulations involve significantly lesser computational resources but are valid only at 0° K (absolute zero). We are developing a greatly simplified equivalent static molecular simulation technique that offers the same results as MD simulations but with a fraction of the computing time. The essence of this approach lies in the selective use of some bulk properties such as coefficients of thermal expansion which are readily available to achieve the simplification, We call this approach "Engineering Molecular Mechanics" (EMM) because it utilizes bulk engineering properties and it can be easily applied to large scale engineering problems which need nanoscale designs at finite temperatures. We have done some preliminary studies to show the effectiveness and efficiency of the EMM technique. Preliminary results indicate savings of at least three orders of magnitudes in computation time using EMM when compared to MD simulations of the same system. We plan to expand the EMM capability to simulate systems involving multi-physics phenomenon like corrosion where chemical reactions play a significant role.

  • Nonconventional Multiscale Continuum Models — Although molecular mechanics is capable of providing detailed information of materials at the atomistic or molecular level, the size of the simulation model is limited by the present time computing capability. We develop and use nonconventional continuum models to perform the conversion of the result obtained from molecular models into appropriate bulk properties for practical engineering analysis and design of large scale systems The issue of "hand shaking" between the EMM model and the nonconventional continuum model with micro/nano-structure has been addressed. By "hand shaking" we do not mean modeling a material with both EMM and continuum models simultaneously as practiced by many researchers in the computational mechanics community. The continuum models we have developed contain relevant micro/nano-structures that can accurately capture the selected behavior predicted by EMM and are truly multiscale continuum models.

  • Manufacturing Nanolaminates by a Self-Assembly Method — One of the most promising ways of utilizing the unique material properties found at the nanoscale is to combine the nano particles with a matrix material such as a polymer to form a composite material (nanocomposite). Unfortunately, current technology for making nanocomposites is limited to mixing or standard self assembly methods, both of which have severe limitations. We have investigated a self assembly method to make nanolaminates consisting of hundreds or thousands of nanometer thick laminae. This is done using the Spin Assisted Layer by Layer Self Assembly (SALbL) by which layers of different nanomaterials are formed according to the design. While the nanolamina will be only nanometer thick, their lateral dimensions can be made rather large.

Publications

Books and Book Chapters
M.F. Uddin and C.T. Sun, “Effect of Nanoparticle Dispersion on Polymer Matrix and Their Fiber Nanocomposites,” in Major Accomplishments in Composite Materials and Sandwich Structures: An Anthology of ONR Sponsored Research, edited by I.M. Daniel et al., Springer, 2010, V, 693—715, DOI: 10.1007/978—90—481—3141—9_26.

C.T. Sun and Jialin Tsai, “Dynamic Compressive Strengths of Polymeric Composites:Testing and Modeling,” in, Dynamic Failure of Materials and Structures Chapter 4, edited by A. Shukla, G. Ravichandran, and Y. D. S. Rajapakse, Springer, 2010.

C.T. Sun and H.H. Huang, “Behavior of Wwave Motion in an Acoustic Metamaterial with Anisotropic Mass Density, IUTAM Bookseries, 2010 Vol. 26, Part 3, 149—163, DOI: 10.1007/978—90—481—9893—1_14, Springer.

C.T. Sun, Mechanics of Aircraft Structures, John Wiley & Sons, New York, NY, 1998. Second Edition, 2007.


Journal Articles
Bhawesh Kumar, C.T. Sun, Peng H. Wang, and R. Sterkenburg, "Adding Additional Load Paths in a Bonded/Bolted Hybrid Joint," Journal of Aircraft, Vol. 47, No. 5, September—October 2010, pp. 1593—1598.

Ashfaq Adnan and C. T. Sun, "Evolution of Nanoscale Defects to Planar Cracks in a Brittle Solid," J. Mechanics and Physics Solids, Vol.58, July 2010. pp.983—1000.

A. K. Subramaniyan and C.T. Sun, "Temperature Dependent Effective Embedded Atom Method Potential for Steady State High Temperature Applications,"Journal of Computational and Theoretical Nanoscience, Volume 7, Number 1, 2010, pp. 176—181.

Jia—Lin Tsai, H.H. Huang, and C.T. Sun, "Multi—displacement Continuum Model for Discrete Systems," Int. J. Mechanical Sciences, Vol. 52, 2010, pp. 1767—1771.

M. F. Uddin and C.T. Sun, "Improved Dispersion and Mechanical Properties of Hybrid Nanocomposites," Composites Science and Technology, Vol. 70, 2010, pp. 223—230.

A. K. Subramaniyan and C.T. Sun, "Temperature Dependent Effective Embedded Atom Method Potential for Steady State High Temperature Applications," Journal of Computational and Theoretical Nanoscience, Volume 7, Number 1, 2010, pp. 176—181.

Z. Dong, James Manimala, and C.T. Sun, "Mechanical Behavior of Silica Nanoparticle—Impregnated Kevlar Fabrics," to appear in J of Mechanics of Materials and Structures, Vol. 5, No. 4, 2010, pp. 529—548.

G.L. Huang and C.T. Sun, "Band Gaps in a Multi—resonator Acoustic Metamaterial," Journal of Vibration and Acoustics, Vol. 132, June 2010.

Bhawesh Kumar, C.T. Sun, Peng H. Wang, and R. Sterkenburg, "Adding Additional Load Paths in a Bonded/Bolted Hybrid Joint," Journal of Aircraft, Vol. 47, No. 5, September — October 2010.

Ashfaq Adnan and C. T. Sun, "Evolution of Nanoscale Defects to Planar Cracks in a Brittle Solid," J. Mechanics and Physics Solids, Vol.58, July 2010. pp. 983—1000.

G.L. Huang, and C.T. Sun, "Multiscale Continuum Modeling of a Crack in Elastic Media with Microstructures," Int. J. Fracture, Vol. 160, 2009, pp.109 &mdash 118.

A. Achuthan and C.T. Sun, "A study of Mechanisms of Domain Switching in a Ferroelectric Material via Loading Rate," Acta Materialia, Vol. 57, August 2009, pp. 3868—3875.

Z. Dong and C.T. Sun, "Testing and Modeling of Yarn Pull—out in Plain Woven Kevlar Fabrics," Composites Part A, Vol. 40, 2009, pp.1863—1869.

M. Merrill and C.T. Sun, "Efficient Self Assembly of Nanolayered Materials and Devices with Three—dimensional Structure," Nanotechnology, Vol. 20, 2009, 075606.

A.K. Subramaniyan and C.T. Sun, "Nanoscale Design of Ni—Al Shape Memory Alloys," Nanotechnology 20 085703(10pp), 2009.

S. Kalyanam and C. T. Sun, "Gradual Polarization Switch Model and Its Effect on the Fracture Behavior of Piezoelectric Materials," Mechanics of Materials, Vol. 41, 2009, pp. 520—534.

C.T. Sun and H. Qian, "Brittle Fracture beyond Stress Intensity Factor," J of Mechanics of Materials and Structures, Vol. 4, No. 4, 2009, pp. 743—753.

H.H. Huang, C.T. Sun, and G.L. Huang, "On the Negative Effective Mass Density in Acoustic Metamaterials," Int J Engineering Science, Vol. 47, 2009, pp. 610—617.

H.H. Huang and C.T. Sun, "Wave Attenuation Mechanism in an Acoustic Metamaterial with Negative Effective Mass Density," New Journal of Physics, Vol 11, January 2009, 013002.

G.L. Huang and C.T. Sun, "High Order Continuum Model for Elastic Media with Multiphased Microstructure," Mechanics of Advanced Materials and Structures, Vol. 15, No. 8, 2008, pp. 550—557.

Arun K. Subramaniyan and C. T. Sun, "Engineering Molecular Mechanics: An Efficient High Temperature Molecular Simulation Technique," Nanotechnology, Vol. 19, 2008, 285706.

A. Adnan and C.T. Sun, "Effect of Surface Morphology and Temperature on the Structural Stability of Nanoscale Wavy Films: A Molecular Simulation Study," Nanotechnology, Vol. 19, 2008, 315702.

A.K. Subramaniyan and C.T. Sun, "Continuum Interpretation of Virial Stress in Molecular Simulations," Int. J. Solids Structures, Vol. 45, No. 14—15, July 2008, pp. 4340—4346.

A. Adnan and C. T. Sun, "Effect of Adhesive Thickness on Joint Strength: a MD Perspective," J. of Adhesion, Vol. 84, 2008, pp. 401—420.

U.V.R.S. Turaga and C. T. Sun, "An Improved Design for Metallic and Composite Single—lap Joints," AIAA J. Aircraft, Vol. 45, No. 2, March—April 2008, pp. 440—447.

M. Uddin and C.T. Sun, "Strength of Unidirectional Glass/Epoxy Composites with Silica Nanoparticle—Enhanced Matrix," Composites Science and Technology, Vol. 68, No. 7—8, June 2008, pp. 1637—1643.

Q. Bing and C.T. Sun. "Size Effect in Off—axis Compressive Strength of Fiber Composites," Composites Part B, Vol. 39, No. 1, pp. 20—26, January 2008.

J. Cho and C.T. Sun, "A Molecular Dynamics Simulation Study of Inclusion Size Effect on Polymeric Nanocomposites," Computational Material Science, Vol. 41, No. 1, November 2007, pp. 54 — 62.

G.L. Huang and C.T. Sun, "Continuum Modeling of Solids with Micro/Nanostructures," Philosophical Magazine, Vol. 87, No. 24, 2007, pp. 3689—3707.

Daining Fang, Y. Jiang, S. Li, and C.T. Sun, "Interaction between Domain Switching and Crack Propagation in Poled BaTiO3 Single Crystal Under Mechanical Loading," Acta Materialia, Vol. 55, 2007, pp. 5758—5767.

Arun K. Subramaniyan, C.T. Sun, "Toughening Polymeric Composites Using Nanoclay: Crack Tip Scale Effects on Fracture Toughness," Composites Part A, Vol.38, 2007, pp. 34—43.

Ashfaq Adnan, C. T. Sun, and Hassan Mahfuz, "A Molecular Dynamics Simulation Study to Investigate the Effect of Filler Size on Elastic Properties of Polymer Nanocomposites," Composites Science and Technology, Vol. 67, No. 3—4, 2007, pp. 348—356.

Qida Bing and C.T. Sun, "Effect of Compressive Transverse Normal Stress on Mode II Fracture Toughness in Polymeric Composites," International Journal of Fracture, Vol.145, No. 2, 2007, pp. 89—97.

Z.—H. Jin and C.T. Sun, "Integral Representation of Energy Release Rate in Graded Materials," Journal of Applied Mechanics, Vol. 74, No. 5, 2007, pp. 1046—1048.

C.T. Sun and G.L. Huang, "Modeling Heterogeneous Media with Microstructures of Different Scales," Journal of Applied Mechanics, Vol. 74, 2007, pp. 203—209.

G.L. Huang and C.T. Sun, "Modeling Heterostructures of Nano—Phononic Crystals by Continuum Model with Microstructures," Applied Physics Letter, Vol. 88, 2006, pp. 261908—1 — 3.

G.L. Huang and C.T. Sun, "A Continuum Model with Microstructures for Wave Propagation in Ultra Thin Films," Int. J. Solids and Structures, Vol. 43, No. 22—23, 2006, pp. 7014—7027.

J. Cho, M.S. Joshi, and C.T. Sun, "Effect of Inclusion Size on Mechanical Properties of Polymeric Composites with Micro and Nano Particles," Composites Science & Technology, Vol. 66, 2006, pp.1941 — 1952.

Haitao Zhang and C.T. Sun, "A Multiscale Mechanics Approach for Modeling Textured Polycrystalline Thin Films with Nano Thickness," Int. J. Mechanical Sciences,Vol. 48, 2006, pp. 899 — 906.

Arun K. Subramaniyan, C.T. Sun, "Enhancing Compressive Strength of Unidirectional Polymeric Composites Using Nanoclay," Composites Part A, Vol.37, 2006, pp. 2257 — 2268.

Z.—H. Jin and C.T. Sun, "A Comparison of Cohesive Zone Modeling and Classical Fracture Mechanics Based on Near Tip Stress Field," Int. J. Solids and Structures, Vol. 43, 2006, pp. 1047 — 1060.

G.L. Huang and C.T. Sun, "The Dynamic Behaviour of a Piezoelectric Actuator Bonded to an Anisotropic Elastic Medium," Int. J. Solids and Structures, Vol. 43, 2006, pp. 1291 — 1307.

C.T. Sun and Z.—H. Jin, "Modeling of Composite Fracture Using Cohesive and Bridging Models," Composites Science and Technology, Vol.66, 2006, pp. 1297—1302.

Z.—H. Jin and C.T. Sun, "Cohesive Fracture Model Based on Necking," Int. J. Fracture, Vol. 134, 2005, pp. 91 — 108.

A. Achuthan and C.T. Sun, "Domain Switching in Ferroelectric Ceramic Materials under Combined Loads," J. Appl. Physics, Vol. 97, 2005, p. 1114103.

Qida Bing and C.T. Sun, "Modeling and Testing Strain Rate Dependent Compressive Strength of Carbon/Epoxy Composite," Composites Science and Technology, Vol. 65, 2005, pp. 2481 — 2491.

Z.—H. Jin and C.T. Sun, "Cohesive Zone Modeling of Interface Fracture in Elastic Bi—Materials," Engineering Fracture Mechanics, Vol. 72, 2005, pp. 1805 — 1817.

S. Kalyanam and C.T. Sun, "Modeling of Electrical Boundary Condition and Domain Switching in Piezoelectric Materials," Mechanics of Materials, Vol. 37, 2005, pp. 769 — 784.

Jialin Tsai and C.T. Sun, "Strain Rate Effect on In—plane Shear Strength of Unidirectional Polymeric Composites," Composite Science and Technology, Vol. 65, 2005, pp. 1941 — 1947.


Plenary Lectures
"Recent Advances in Acoustic Metamaterials Research," Seventh Asian, Australian Conference on Composite Materials (ACCM7), Taipei, Taiwan, November 15 —18, 2010.

"Acoustic Metamaterials with Negative Effective Mass," Ronald Gibson Symposium, Wayne State University, Detroit, MI, May 9, 2008.

"Is There a Way to Document Composites Experience for use by Practicing Engineers?" AIAA SDM Lecture, AIAA SDM Conference, Schaumburg, IL, April 7, 2008.

"Continuum Models for Heterogeneous Solids under Dynamic Loading," MHM2007, Prague, Czech Republic, June 25—27, 2007.

"Challenges and Opportunities in Nanocomposites," Sixteenth International Conference on Composite Materials (ICCM 16), Kyoto, Japan, July 9—13, 2007.

"Load Transfer Efficiency of Micro and Nano Sized Reinforcements in Polymeric Composites," 8th Seminar on Experimental Techniques and Design in Composite Materials, Sardinia, Italy, October 3—6, 2007.

"Size Effects in Composite Materials," International Conference MATERIAIS 2007, Global Materials for the XXI Century: Challenges to Academia and Industry, Porto, Portugal, April 1—4, 2007.

"Fracture and Durability of Ferroelectric Materials," 17th International Conference on Adaptive Structures and Technologies, National Taiwan University, Taipei, Taiwan, October 17—19, 2006.

"Homogenization of Heterogeneous Solids under Dynamic Loads," Southeastern Conference on Theoretical and Applied Mechanics (SECTAM XXII), August 15—17, Tuskegee University, 2004.

"Methods for Testing and Modeling Composite Materials and Laminates," International Conference on Composites Testing and Model Identification, Bristol, UK, September 21—23, 2004.

"Issues of Size in Composite Materials," 19th Technical Conference, American Society for Composites, Atlanta, Georgia, October 17—19, 2004.

Conference Proceedings, Presentations, Invited Lectures

J. S. Chen and C.T. Sun, "Effect of Periodic Core Property and Supports on Wave Motion in Sandwich Structures," Asian, Australian Conference on Composite Materials (ACCM7), Taipei, Taiwan, November 15 —18, 2010.

Kota Mikoshiba and C.T. Sun, "A Multifunctional Acoustic Metamaterial," USNCTAM2010, State College, PA, June 28 — July 2, 2010.

H.H. Huang and C.T. Sun, "Multi—displacement Continuum Modeling of a 2D Metacomposite," State College, PA, June 28 — July 2, 2010

Bhawesh Kumar and C. T. Sun, "Relationship between the fracture toughness of a composite and its matrix," 14th ECCM, Budapest, Hungary, June 7 —10, 2010.

J.S. Chen, B. Sharma, and C.T. Sun, "Sandwich Structure Containing Resonators," Proceedings of ICSS9, Pasadena, California, June 14 —16, 2010.

Hee Seok Roh, "A New Design of Composite Patch Repair for Composite Structures," Proceedings of the 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Orlando, Florida, April 12—15, 2010.

Yuta Morioka and C.T. Sun, "A Simple Method for Determining Stress Intensity Factors in Bi—material Interfacial Cracks," Proceedings of the 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Orlando, Florida, April 12—15, 2010.

C.T. Sun, "Effect of Particle Size on the Strength of Nanocomposites," TMS 2010, February 15 —18, 2010, Seattle, Washington.

M. F. Uddin and C. T. Sun, "Effect of Dispersion on the Strength of Unidirectional Composites with Nanoparticle—Enhanced Matrix," Proceedings of the 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Palm Springs, California. May 4 —7, 2009.

B. Kumar, R. Sterkenburg, P. Wang, and C.T. Sun, "A Novel and Efficient Hybrid (bonded/bolted) Lap Joint for Metallic Structures," Proceedings of Society for the Advancement of Material and Process Engineering, Baltimore, MD, May 18—21 2009.

C.T. Sun and J. Chen, "Dynamic Behaviour of Sandwich Beam with Internal Resonators," Proceedings of the 17th International Conference on Composite Materials, Edinburgh, UK, July 27 — 31, 2009.

C.T. Sun and H.H. Huang, "Behavior of Wave Motion in an Acoustic Metamaterial with Anisotropic Mass Density," IUTAM Symposium on Recent Advances of Acoustic Waves in Solids, Taipei, Taiwan, May 25—28, 2009 (Editors: Tsung—Tsong Wu and Chien—Ching Ma), Springer, 2010.

H.H. Huang and C.T. Sun, "Dynamic Characteristics of Acoustic Metamaterials with Anisotropic Mass," ASME—ASCE Mechanics Conference, Blacksburg, Virginia, June 24 — 27, 2009.

Bhawesh Kumar, S. Chitsiriphanit, and C. T. Sun, "Effect of K—dominance Zone Size on Brittle Fracture," ASME—ASCE Mechanics Conference, Blacksburg, Virginia, June 24 — 27, 2009.

H.H. Huang and C.T. Sun, "Phenomena of wave propagation through a 2D anisotropic acoustic metamaterial," 10th US National Congress of Computational Mechanics(USNCCM10), Columbus, OH, July 16 — 19, 2009.

C.T. Sun, Bhawesh Kumar, Peng H. Wang, and R. Sterkenburg, "Strength Enhancement of Hybrid (bonded/bolted) Joints for Composites Using Attachments," ASC Annual Technical Conference, University of Delaware, September 15 —17, 2009.

H.H. Huang and C.T. Sun, "Unusual Characteristics in Continuum Modeling of 2D Anisotropic Metacomposites," ASC Annual Technical Conference, University of Delaware, September 15 —17, 2009.

Arun K. Subramaniyan and C. T. Sun, "Developing Nanoscale Design Criterion for Enhancing Phase Transformation in Shape Memory Alloys," ASME IMECE, Orlando, FL, November 13—19, 2009.

H.H. Huang and C.T. Sun, "Anisotropic Band Gap in a 2D Acoustic Metamaterial," ASME IMECE, Orlando, FL, November 13—19, 2009.

Adnan Ashfaq and C. T. Sun, "Evolution of a Nanoscale Defect to a Continuum Crack in Brittle Solids," ASME IMECE, Orlando, FL, November 13—19, 2009.

C.T. Sun, "Influence of Nonsingular Crack Tip Stress on Fracture Toughness of Brittle Material," (Key Note) 3rd International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics, National Cheng Kung University, Tainan, Taiwan, December 7—10, 2008.

Arun K. Subramaniyan and C. T. Sun, "Engineering Molecular Mechanics: an efficient static high temperature molecular simulation technique," (presented at the Drucker Medalist Symposium) 2008 International Mechanical Engineering Congress and Exposition (IMECE), Boston, MA, USA, Oct 31 — Nov 6, 2008.

Ashfaq Adnan and C.T. Sun, "Effect of Surface Morphology and Temperature on the Structural Stability of Wavy Nanofilms," 2008 International Mechanical Engineering Congress and Exposition (IMECE), Boston, MA, USA, Oct 31 — Nov 6, 2008.

H.H. Huang and C.T. Sun, "Metamaterials with Tunable Stop Band," 2008 International Mechanical Engineering Congress and Exposition (IMECE), Boston, MA, USA, Oct 31 — Nov 6, 2008.

Bhawesh Kumar and C.T. Sun, "Modeling Crack Constraining Effect in Brittle Fracture," 45th Annual Society of Engineering Science Technical Meeting, University of Illinois, Champaign—Urbana, Illinois, June 2—4, 2008.

Marriner Merrill and C.T. Sun, "Nanostructure/Strain—Resistance in Nanolaminates Containing Carbon Nanofibers and Carbon Nanotubes," 23rd Technical Conference, American Society for Composites, Memphis, TN, September 9 — 11, 2008.

Hee Seok Roh, C.T. Sun, and R. B. Pipes, "Quick Repairs of Composite Structures," 23rd Technical Conference, American Society for Composites, Memphis, TN, September 9 — 11, 2008.

C.T. Sun, "Why LEFM Is Not Applicable for Bonded Joints," (abstract only) 23rd Technical Conference, American Society for Composites, Memphis, TN, September 9 — 11, 2008.

Mohammed F. Uddin and C. T. Sun, "Effect of Particle Size on Mechanical Properties of Silica Nanocomposites," 13th US—Japan Conference on Composite Materials, Nihon University, Tokyo, Japan, June 6—7, 2008.

G.L.Huang and C.T. Sun, "Wave Propagation in Elastic Media with Nanostructures," Proceedings of the 2nd International Conference on Hetergeneous Material Mechanics, Huangshan, China, June 3—8, 2008, PP. 325—328.

M. Uddin and C.T. Sun, "Impact resistance and Toughness of Composite Laminates with Nanoparticle—enhanced Matrix," SAMPE 2008, Long Beach, CA, May 18—22, 2008.

C.T. Sun, "Modeling Meta—composite Materials," (abstract only) Symposium on Advances in Composites and Layered Materials, Venice, Italy, May 21—22, 2008.

H. Qian and C.T. Sun, "Effect of Bondline Thickness on Mode I Fracture in Adhesive Joints," 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Schaumburg, Illinois, April 7 —10, 2008.

Daniel Nakaima and C. T. Sun, "Effect of Necking on Fracture Toughness in Polycarbonate," (Abstract), Eighth International Conference on Fundamentals of Fracture, Hong Kong University of Science and Technology Kowloon, Hong Kong, China, January 3 —4, 2008.

Haiyang Qian and C.T. Sun (presentation only), "Brittle Fracture Beyond Stress Intensity Factors," (presentation only) ASME International Mechanical Engineering Congress & Exposition, Seattle, November 11 — 15 2007.

A.K. Subramaniyan and C.T. Sun, "Modeling Piezoelectric Behavior of Quartz Using Molecular Simulations," (presentation only) ASME International Mechanical Engineering Congress & Exposition, Seattle, November 11 — 15 2007.

Mohammed F. Uddin and C. T. Sun, "Compressive Strength of Unidirectional GFRP Composite with Silica Nanoparticle—Enhanced Epoxy," 22nd Technical Conference, American Society for Composites, Seattle, WA, September 17—19, 2007.

Qida Bing and C.T. Sun, "Effect of Transverse Normal Stress on Mode II Fracture Toughness in Fiber Composites," Sixteenth International Conference on Composite Materials (ICCM 16), Kyoto, Japan, July 9—13, 2007.

C.T. Sun and G.L. Huang, "Continuum Modeling of Mode I Crack in Media with Micro Structures," (presentation only) ASME Applied Mechanics and Materials Conference (McMat 2007), University of Texas at Austin, June 3—7, 2007.

Jia—Lin Tsai and C.T. Sun, "Multi—displacement Continuum Model for Discrete Systems," (presentation only) ASME Applied Mechanics and Materials Conference (McMat 2007), University of Texas at Austin, June 3—7, 2007.

C.T. Sun and Q. Bing, "Characterizing Mode II Fracture Toughness in Polymeric Composites Using Off—Axis Specimens," 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, Hawaii, April 23—27, 2007.

A.K. Subramaniyan and C.T. Sun, "Engineering Molecular Statics for Molecular Simulation Including Temperature Effects," (presentation only) ASME International Mechanical Engineering Congress & Exposition, Chicago, IL, November 5—10, 2006.

A.K. Subramaniyan and C.T. Sun, "Engineering Molecular Statics for Molecular Simulation Including Temperature Effects," ASME International Mechanical Engineering Congress & Exposition, Chicago, IL, November 5—10, 2006.

C.T. Sun, "Fracture and Durability of Ferroelectric Materials," plenary lecture at 17th International Conference on Adaptive Structures and Technologies, National Taiwan University, Taipei, Taiwan, October 17—19, 2006.

Mohammed F. Uddin and C.T. Sun, "New Processing Method for High Particle Loading Silica/Alumina/Epoxy Hybrid Nanocomposites," 12th US—Japan Conference on Composite Materials, Dearborn, Michigan, September 20—22, 2006.

C.T. Sun, "What is Multiscale Modeling in Composites," 21st Technical Conference, American Society for Composites, Dearborn, Michigan, September 17—20, 2006.

Zhaoxu Dong and C.T. Sun, "Experimental and Numerical Investigation of the Ballistic Performance of Kevlar Fabric / Silica Nano—Particle Composites," 21st Technical Conference, American Society for Composites, Dearborn, Michigan, September 17—20, 2006.

Rushabh Kothari and C.T. Sun, "Design of Heat Dissipating Systems for Multifunctional Structures," 21st Technical Conference, American Society for Composites, Dearborn, Michigan, September 17—20, 2006.

C.T. Sun, "Size Effects in Composite Materials," keynote at the International Conference on Aerospace Materials, 2006 Beijing International Materials Week, Beijing, China, June 25—30, 2006.

C.T. Sun and Z. Yang, "Significance of K—dominance in Delamination Cracking in Composite Laminates," 16th European Conference on Fracture, Alexandropolis, Greece, July 3—7, 2006.

G.L. Huang and C.T. Sun, "A Continuum Model with Microstructures for Wave Propagation in Ultra Thin Films," 15th US National Congress on Theoretical and Applied Mechanics, University of Colorado, Boulder, Colorado, June 25—30, 2006.

Z.—H. Jin and C.T. Sun, "Integral Representation of Energy Release Rate in Functionally graded Materials," 15th US National Congress on Theoretical and Applied Mechanics, University of Colorado, Boulder, Colorado, June 25—30, 2006.

J. Cho and C.T. Sun, "A Molecular Dynamics Simulation Study of Particle Size Effect on Mechanical Properties of Polymeric Nanocomposites," ASME International Mechanical Engineering Congress & Exposition, Orlando, Florida, November 6—11, 2005.

A. Adnan, C.T. Sun, and H. Mahfuz, "Effect of Particle Size on Mechanical Properties of Polymer Nanocomposites," 20th Technical Conference, American Society for Composites, Philadelphia, September 7—9, 2005.

J.S. Park, C.T. Sun, and K.P. Trumble, "Effect of Contiguity on the Mechanical Behavior of Co—continuous Ceramic Metal Composites," 20th Technical Conference, American Society for Composites, Philadelphia, September 7—9, 2005.

M. Merrill and C.T. Sun, "Development of a Self—Assembly Method for Manufacturing Nanocomposites with High Loadings of Nanoparticles," 20th Technical Conference, American Society for Composites, Philadelphia, September 7—9, 2005.

Q. Bing and C.T. Sun, "Size Effect in Off—axis Compression Test of Fiber Composites," 20th Technical Conference, American Society for Composites, Philadelphia, September 7—9, 2005.

A.K. Subramaniyan and C.T. Sun, "Toughening Polymeric Composites Using Nanoclay," 20th Technical Conference, American Society for Composites, Philadelphia, September 7—9, 2005.

C.T. Sun and Z.—H Jin, "Cohesive Zone and Bridging Zone in Delamination Fracture," 5th Canadian—International Conference on Composite Materials, August 16—19, 2005,Vancouver, Canada.

Q. Bing and C.T. Sun, "Determination of Composites Compressive and Shear Strength Using Off—axis Specimens," SEM Annual Conference and Exposition on Experimental and Applied Mechanics, June 7—9, 2005, Portland, Oregon.

C.T. Sun and Z. Wang, "A Homogeneous Continuum Model with Micro—Inertia for Fiber Composites," Int. Conference on Structural Stability and Dynamics, June 20—22, 2005, Orlando, Florida.

C.T. Sun and Z.—H. Jin, "A Comparison of Cohesive Zone Modeling and Continuum Fracture Mechanics," 2005 Mechanics and Materials Conference, June 1—3, 2005, Baton Rouge, Louisiana.

G. Huang and C.T. Sun, "Continuum Modeling of Heterogeneous Media with Microstructures and Nanostructures," 2005 Mechanics and Materials Conference, June 1—3, 2005, Baton Rouge, Louisiana.

C.T. Sun and G. Huang, "A Method for Modeling Heterogeneous Media with Microstructures of Different Scales," Computational Methods for Coupled Problems in Science and Engineering, May 25—27, 2005, Santorini, Greece.

Q. Bing and C.T. Sun, "Determination of Composites Compressive and Shear Strengths Using Off—Axis Specimens," 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Austin, Texas, April 18—21, 2005.

Z.—H. Jin and C.T. Sun, "Conditions on Cohesive Laws in Cohesive Zone Fracture Models," International Conference on Fracture, March 21—25, 2005, Turin, Italy.