Dr. Jaehyung Ju

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The design group at Clemson University
160 articles in English


Contents

[edit] Biography

Dr. Jaehyung Ju worked as a research associate of the Department of Mechanical Engineering at Clemson University for three years since 2008. Dr. Ju is not a faculty member at the Department of Mechanical and Energy Engineering (MEE) at the University of North Texas (UNT) as an Assistant Professor from 2011 fall semester. Before he joined Clemson design group, Dr. Ju had worked as a Visiting Assistant Professor at Texas A&M University-Kingsville for one year (2007-2008) and a postdoctoral researcher at Texas Engineering Experiment Station (TEES) for two years (2005-2007). He received Ph.D. degree from the Department of Mechanical Engineering at Texas A&M University-College Station in 2005 on experimental and computational mechanics of composite materials and structures. Before he came to the United States, he had worked as Research Scientist at CAD/CAM research center of Korea Institute of Science and Technology (KIST) for 5 years (1996-2000) and Lecturer at Dongyang Technical University for one year (1999-2000).

His research areas are mechanics and design of multifunctional materials and structures; compliant cellular materials, electro-active materials, and non-pneumatic tires while focusing on energy efficiency and energy harvesting. He has published about 50 refereed journal articles and conference proceedings in the area of mechanics, design and structural dynamics of composites, cellular materials, sandwich structures, electro-active materials, and non-pneumatic tires. He has filed four US patents as a main inventor on non-pneumatic tire components with cellular materials while collaborating with Michelin.

He is serving as technical committee and session organizer of i) tire and wheel technology of SAE World Congress, ii) advanced vehicle and tire technology of ASME-IDETC, and iii) composite and heterogeneous materials of ASME-IMECE. He is also serving as an editorial board member of Modern Mechanical Engineering (MME).

[edit] Contact Information

  • Department of Mechanical and Energy Engineering, 1155 Union Circle, #311098, University of North Texas, Denton, TX 76203-5017
  • jaehyung.ju@unt.edu or jaehyung.ju@gmail.com

940-565-2118 (office)

[edit] Research Interests

Mechanics and Design of Multifunctional Materials and Structures – Electro Active Polymers, Piezoelectric Ceramics, Cellular Materials, Composites and Sandwich Structures

My research not only focuses the fundamental mechanics of materials and structures (static/dynamic stress analysis, nonlinear material modeling, contact stress, fracture, fatigue, impact, noise, and vibration) but also covers the applications shown below while considering specific design requirements:

  • Automotive – Fuel efficient design of pneumatic and non-pneumatic tires(see TWEEL)
  • Aerospace – Multifunctional composite sensors and actuators, morphing design with compliant cellular solids, vibration and noise attenuation, high temperature materials and structures
  • Civil – Energy harvesting pavement design with electro active polymer geomembranes
  • Biomedical - Artificial disk with flexible cellular materials


[edit] Education


[edit] Previous Job Experience

[edit] Professional Services

ASME Conference Technical Committee (2009-present)

  • Applied Mechanics-Materials Joint Division: Constitutive Equations (ASME-IMECE); Since 11/2009
  • Materials Division: Composites and Heterogeneous Materials (ASME-IMECE), Since 11/2009
  • Applied Mechanics Division: Dynamic Response of Materials (ASME-IMECE), Since 11/2009
  • Vehicle Design Division: Advanced Vehicle and Tire Technology (ASME-IDETC), Since 08/2010

SAE Conference Technical Committee (2010-present)

  • Tire and Wheel Technology (SAE World Congress and International Conference, Session Organizer), Since 04/2010

[edit] Refereed Journal Articles

  1. N. Chandrasekharan, J. Ju, and L. Thompson, 2011, Effects of Geometric and Material Properties on Electrical Power Harvested from a Bimorph Piezoelectric Cantilever Beam, Smart Materials and Structures, (submitted 05/2011, in review, SMS-394939-PAP-210931)
  2. J. Ju, D.-M. Kim, and K. Kim, Flexible Cellular Solid Spokes for a Non-Pneumatic Tire, Composite Structures, (accepted pending revision, 06/2011, COST-S-11-00115)
  3. J. Ju, N. Seera, L. Thompson, J.D. Summers, Vibration and Damping of Hexagonal Honeycomb Sandwich Plates, Journal of Sandwich Structures and Materials. (accepted, in press 07/2011)
  4. J. Ju, M. Veeramurthy, J.D. Summers, and L. Thompson, 2010, Rolling Resistance of a Non-Pneumatic Tire having a Porous Elastomer Composite Shear Band, Tire Science and Technology. (Accepted Pending Revision, 07/2011, TST-10064-320522)
  5. L. Berglind, J. Ju, and J.D. Summers, 2010, Aluminum Taper Bristle Shaped Shear Band for a Non-Pneumatic Tire, Tire Science and Technology. (manuscript submitted 08/2010, in review, TST-10066-545866)
  6. J. Ju and J.D. Summers, Energy Loss of Cellular Materials under In-Plane Cyclic Loading, Transactions of the ASME: Journal of Applied Mechanics. (accepted pending revision, 09/2010, JAM-09-1371)
  7. Ju, J., Summers, J., Ziegert, J., Fadel, G., (2012), "Design of Honeycombs for Modulus and Yield Strain in Shear, Transactions of the ASME: Journal of Engineering Materials and Technology", Transactions of the ASME: Journal of Engineering Materials and Technology, 134, (1): on-line
  8. Ju, J., and Summers, J.D., 2011, Compliant Hexagonal Periodic Lattice Structures Having Both High Shear Strength and High Shear Strain, Materials & Design, 32(2):512-524 .on-line
  9. J. Ju and J.D. Summers, 2011, Hyperelastic Constitutive Modeling of Hexagonal Honeycombs Subjected to In-Plane Shear loading, Transactions of the ASME: Journal of Engineering Materials and Technology, 133(1):011005-1-8 on-line
  10. J. Ju, B. Ananthasayanam, J.D. Summers, P. Joseph, 2010, Design of Cellular Shear Bands of a Non-Pneumatic Tire – Investigation of Contact Pressure, SAE International Journal of Passenger Cars – Mechanical Systems, 3(1):598-606 on-line
  11. L. Berglind, J. Ju, and J.D. Summers, 2010, Method to Design Honeycombs for a Shear Flexible Structure, SAE International Journal of Passenger Cars – Mechanical Systems, 3(1):588-597 on-line
  12. J. Ju, B. D. Pickle, R. J. Morgan, and J. N. Reddy, 2008, An Initial and Progressive Failure Analysis for Cryogenic Composite Fuel Tank Design, Journal of Composite Materials, 42(6):560-592.on-line
  13. J. Ju, R. J. Morgan, E. E. Shin and T. S. Creasy, 2007, Transverse Cracking of M40J/PMR-II-50 Composites under Thermal-Mechanical Loadings: Part I - Characterization of Main and Interaction Effects Using Statistical Design of Experiments, Journal of Composite Materials, 41(8):1009-1031.on-line
  14. J. Ju, R. J. Morgan, E. E. Shin, and T. S. Creasy, 2007, Transverse Cracking of M40J/PMR-II-50 Composites under Thermal-Mechanical Loadings: Part II - Experimental and Analytical Investigation, Journal of Composite Materials, 41(9):1067-1086.on-line
  15. J. Ju and R. J. Morgan, 2004, Characterization of BMI-Carbon Fiber Composite Microcrack Development under Stress and Thermal cycling, Journal of Composite Materials, 38(22):2007-2024.on-line
  16. S. Park, M. Chang, J. Ju, 1999, Tool Path Generation for 5-axis Machining of Impellers, International Journal of Production Research, 37(16):3659-3669.on-line

[edit] Book Chapters

  1. J. Ju, Chapter 12: Multifunctional Materials and Their Applications, Mechanics of Materials, Author and Editor D. Kim, Bogdoo Publishing Co., ISBN:978-89-8000-424-9 (2011)

[edit] Refereed Conference Proceedings

  1. J. Ju and J.D. Summers, 2011, Superelastic Shape Memory Alloy Honeycombs in Shear, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2011-48790, Washington, DC
  2. N. Chandrasekharan, J. Ju, and L. Thompson, 2011, Finite Element Modeling of Energy Harvesting of a Single Mode Bimorph Cantilever Beam, In Proceedings of the ASME International Conference on Mechanical Vibration and Noise, DETC2011-48003, Washington, DC
  3. M. Veeramurthy, J. Ju, L. Thompson, and J.D. Summers, 2011, Optimization of Non-Pneumatic Tire (NPT) for Reducing Rolling Resistance, In Proceedings of the ASME International Conference on Advanced Vehicle and Tire Technologies, DETC2011-48730, Washington, DC
  4. S. Ryu, J. Ju, D.-M. Kim, and H. Huh, 2011, Solid Tire of a Separable Bike Wheel, In Proceedings of the ASME International Conference on Advanced Vehicle and Tire Technologies, DETC2011-47293, Washington, DC
  5. K. Kim, J. Ju, D.-M. Kim, and S. Rhie, 2011, Interaction Modeling of Viscoelastic Pavement and Pneumatic Tires, In Proceedings of the ASME International Conference on Advanced Vehicle and Tire Technologies, DETC2011-47290, Washington, DC
  6. J. Schultz, D. Grese, P. Shankar, J.D. Summers, J. Ju, L. Thompson, 2011, Optimization of Honeycomb Cellular Meso-Structures for High Speed Impact Energy Absorption, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2011-48000, Washington, DC
  7. J. Ju, M. Veeramurthy, J.D. Summers, and L. Thompson, 2010, Rolling Resistance of a Non-Pneumatic Tire having an Elastomer Shear Band, The 29th Annual Meeting and Conference on Tire Science and Technology, Akron, Ohio presentation slide
  8. L. Berglind, J. Ju, and J.D. Summers, 2010, Aluminum Taper Bristle Shaped Shear Band for a Non-Pneumatic Tire, The 29th Annual Meeting and Conference on Tire Science and Technology, Akron, Ohio presentation slide
  9. J. Ju, J.D. Summers, J. Ziegert, and G. Fadel, 2010, Compliant Hexagonal Meso-Structures Having Both High Shear Strength and High Shear Strain, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2010-28672, Montreal, Quebec, Canada
  10. P. Shankar, J. Ju, J.D. Summers, J. Zeigert, 2010, Influence of Curved Elements in Auxetic Honeycombs in High Strain and Flexure Conditions, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2010-28545, Montreal, Quebec, Canada
  11. A. Kolla, J. Ju, J.D. Summers, 2010, Investigation of Chiral Honeycomb Geometry for Shear Flexure Design, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2010-28557, Montreal, Quebec, Canada
  12. S. Joshi, J. Ju, L. Berglind, R. Rusly, J.D. Summers, and J. DesJardins, 2010, Experimental Damage Characterization of Honeycombs Subjected to In-Plane Shear Loading, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2010-28549, Montreal, Quebec, Canada
  13. J. Ju, B. Ananthasayanam, J.D. Summers, P. Joseph, Design of Cellular Shear Bands of a Non-Pneumatic Tire – Investigation of Contact Pressure, In Proceedings of the SAE 2010 World Congress and Exhibition, 10AC-0148, Detroit, MI. on-line
  14. J. Ma, J. Ju, J.D. Summers, and P. Joseph, Effects of Cellular Shear Bands on Interaction between a Non-Pneumatic Tire and Sand, In Proceedings of the SAE 2010 World Congress and Exhibition, 10AC-0108, Detroit, MI. on-line
  15. L. Berglind, J. Ju, and J.D. Summers*, Method to Design Honeycombs for a Shear Flexible Structure, In Proceedings of the SAE 2010 World Congress and Exhibition, 10AC-0107, Detroit, MI. on-line
  16. J. Ju, J.D. Summers, J. Ziegert, and G. Fadel, 2009, Nonlinear Elastic Constitutive Relations on Auxetic Honeycombs, In Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE2009-12654, Lake Buena Vista, FL. on-line
  17. J. Ju, J.D. Summers, J. Ziegert, and G. Fadel, 2009, Cyclic Energy Loss of Honeycombs under In-Plane Loading, In Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE2009-12658, Lake Buena Vista, FL. on-line
  18. J. Ju, J.D. Summers, J. Ziegert, and G. Fadel, 2009, Design of Honeycomb Meta-materials for High Shear Flexure, In Proceedings of the ASME International Design Engineering Technical Conferences, DETC2009-87730, San Diego, CA. on-line
  19. J. Ju, R. J. Morgan, and J.N. Reddy, Multiphysics Based Progressive Failure Analysis for Cryogenic Composite Fuel Tank Design, 2007, In Proceedings of ANTEC 2007 of Society of Plastics Engineering, Cincinnati, OH. on-line
  20. Y. Li, G.S. Payette, N. Obando, J. O’Neal, J. Ju, R.J. Morgan, J.N. Reddy, 2006, Evaporative Cooling of Moisture Bearing Epoxy Composite Plates, In Proceedings of SAMPE Fall Technical Conference and Exhibition, Dallas, TX.
  21. J. Ju, R. J. Morgan, and E.E. Shin, 2006, Transverse Interface Failure of M40J/PMR-II-50 Composites under High Temperature Exposure, In Proceedings of 51st International SAMPE Symposium, Long Beach, CA.
  22. J. Ju, R. J. Morgan, and E.E. Shin, 2006, Transverse Interface Failure of M40J/PMR-II-50 Composites under High and Low Temperature Exposure, In Proceedings of ANTEC 2006 of Society of Plastics Engineering, Charlotte, NC.
  23. J. Ju, R.J. Morgan, and J. N. Reddy, 2005, Thermo-Mechanical Analysis of Composites under Combined Conduction Heating and Large Deflection Bending, In Proceedings of ASME International Mechanical Engineering Congress & Exposition, IMECE2005-81262, Orlando, FL. on-line
  24. J. Ju, R. J. Morgan, T. S. Creasy, S. Hafernik, and E.E. Shin, 2005, Statistical Approach to Evaluate Composite Damage, In Proceedings of ANTEC 2005 of Society of Plastics Engineering, Boston, MA.
  25. J. Ju and R. J. Morgan, 2004, Water diffusion based Non-destructive Evaluation of PMR-II-50/M60J 4HS Weave Carbon Fabric Composite Materials under Stress-Thermal Cycling, In Proceedings of ANTEC 2004 of Society of Plastics Engineering, Chicago, IL.* (Best Paper Award)
  26. J. Ju and R. J. Morgan, 2003, Characterization of BMI-Carbon Fiber Composite Microcrack Development Under Thermal Cycling, In Proceedings of ANTEC 2003 of Society of Plastics Engineering, Nashville, TN.
  27. J. Ju, M. Prochazka, B. Ronck, R.J. Morgan*, and E.E. Shin, 2003, Damage assessment of Stress-Thermal Cycled High Temperature, In Proceedings of The 14th International Conference on Composite Materials (ICCM-14), San Diego, CA.
  28. J. Ju, Y. Li, J. Lu, S. Moon, R. Ribeiro, B. Ronck, F. Tschen, and R.J. Morgan*, 2003, Fundamental Materials Structure-Property Studies for Electron Beam Cured Composites, In Proceedings of 48th International SAMPE Symposium, Long Beach, CA.
  29. S. Park, M. Chang, and J. Ju, Superimposing colors and textures on 3D Mock-ups via Optical Projection of 2D Images, In: Proceedings of the CIRP STC Seminar 'New Tools and Work Flows for Product Development, pp49-58, May, 1998, Berlin, Germany.
  30. S. Park, M. Chang, J. Ju, Virtual Styling system, In Proceedings of Korea-Israel Bi-National Conference' Geometric Modeling and Computer Graphics in the World Wide Web Era, Sep.29-30, 1999, Seoul, Korea.

[edit] US Patents

  1. J. Ju and J.D. Summers, J. Ziegert, and G. Fadel, Shear Compliant Hexagonal Meso-Structures Having High Shear Strength and High Shear Strain, P50-0347-US-PSP (61/321,915), Filed 04/2010.
  2. A. Kolla, J. Ju, J.D. Summers, J. Ziegert, Design of Chiral Honeycomb Meso-Structures for Shear Flexure, P50-0346-US-PSP (61/319,915), Filed 04/2010.
  3. L. Berglind, J. Ju, and J.D. Summers, A New Method to Design Honeycombs for a Shear Flexible Structure, P50-0345-US-PSP (61/319,544), Filed 03/2010.
  4. J. Ju, J.D. Summers, J. Ziegert, G. Fadel, A. Michaelraj, P. Shankar, Honeycomb Structures for High Shear Flexure, P50-0319-US-PSP (61/219,847), Filed 06/2009.
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