Dr. Chang-Dong Yeo
Contact Information
Dr. Chang-Dong Yeo
Department of Mechanical Engineering
Texas Tech University
Lubbock, TX 79409-1021
Tel: (806)742-3563 EXT. 242
Fax: (806)742-3540
email: changdong.yeo@ttu.edu
Education
- Ph.D., University of Illinois at Urbana-Champaign
- M.S., Yonsei University, Korea
- B.S., Yonsei University, Korea
Professional Experience
- Assistant Professor, Texas Tech University, TX, USA, 2009-Present
- Staff Engineer, Seagate Technology LLC, MN, USA, 2008-2009
- Graduate Research Assistant, Department of Mechanical Engineering, University of Illinois at Urbana-Champaign, IL, USA, 2004-2008
- Senior Engineer, Samsung Electronics LTD, Korea, 1998-2004
Teaching Areas
- Contact Mechanics, Material Behavior, Solid Mechanics, Elasticity, Computational Mechanics, Tribology
Research Interests
- Contact Mechanics and Surface Engineering of Micro/Nano-scale Systems
- Theoretical/Experimental Study of Dynamic Adhesive Surface Interactions
- Material Characterization of Thin Films using Nanoindentations/Nanoscratch Technique
- Computational Mechanics of Multi-layered Structure
Research Group Memebers
- PhD Students: Sungae Lee, Muyang He
- MS Students: Shahrukh Niazie, Onay Mert
Awards
- Schaller Fund Graduate College Travel Grant, University of Illinois at Urbana-Champaign, 2007
- Outstanding Engineer of the year 2001, Samsung Electronics LTD, 2001
Publication
- S. Lee and C.-D. Yeo, "Microwear mechanism of head carbon film during head disk interface sliding contact," Tribology International, in press (online available), 2011.
- C.-D. Yeo, R.R. Katta and A.A. Polycarpou, "Effect of asperity interactions on rough surface elastic contact behavior: Hard film on soft substrate," Tribology International, Vol. 43, pp. 1438-1448, 2010.
- C.-D. Yeo, R.R. Katta and A.A. Polycarpou, "Improved Elastic Contact Model Accounting for Asperity and Bulk Substrate Deformation", Tribology Letters, Vol. 35, No. 3, pp. 191-203, 2009.
- C.-D. Yeo, A.A. Polycarpou, "Dynamic adhesive force measurements under vertical and horizontal motions of interacting rough surfaces", Review of Scientific Instruments, 79, 015111, 2008.
- C.-D. Yeo, A.A. Polycarpou, S.C. Lee and M. Sullivan, "Friction Force Measurements and Modeling in Hard Disk Drives", IEEE Trans. Mag., Vol. 44, No. 1, pp. 157-162, 2008.
- C.-D. Yeo, A.A. Polycarpou, J.D. Kiely and Y.-T. Hsia, "Nanomechanical Properties of Ultrathin Carbon Film Overcoats Using the Nanoindentation Technique", Journal of Materials Research, Vol. 22, No. 1, pp. 141-151, 2007.
- C.-D. Yeo, A.A. Polycarpou, "A Correction to the Nanoindentation Technique for Ultra-shallow Indentation Depths", Journal of Materials Research, Vol. 22, No. 9, pp. 2359-2362, 2007.
- K.M. Lee, C.-D Yeo and A.A. Polycarpou, "Relationship between scratch hardness and yield strength of elastic perfectly plastic materials using finite element analysis", Journal of Materials Research, Vol. 23, No. 8, pp. 2229-2237, 2008.
- E. E. Nunes, C.-D. Yeo, R. Katta and A. A. Polycarpou, "Effects of Planarization on the Contact Behavior of Patterned Media", IEEE Trans. Mag., Vol. 44, pp. 3667-3670, 2008.
- K.M. Lee, C.-D. Yeo and A.A. Polycarpou, "Nanomechanical Property and Nanowear Measurements for Sub-10 nm Thick Films in Magnetic Storage", Experimental Mechanics, Vol. 47, No. 1, pp. 107-121, 2007.
- K.M. Lee, C.-D. Yeo and A.A. Polycarpou, "Mechanical Property Measurements of Thin Film Carbon Overcoat on Recording Media towards 1 Tb/in2", Journal of Applied Physics, 99, 08G906, 2006.