Research
I. Electronics Packaging
Aimed at understanding the failure mechanism by identifying likely fracture modes and potential delamination sites in flip chip packages. Multi-scale (global/local) finite element method were developed and applied. Detailed 2D and 3D fracture/fatigue analyses were carried out.
Flip-Chip Packaging
- Interfacial Delamination and Fatigue Life Estimation of 3D Solder Bumps in Flip-Chip Packages, Microelectronics Reliability, 2004
- Interfacial Delamination Near Solder Bumps and UBM in Flip-Chip Packages, Journal of Electronic Packaging, 2001
- Presentation on ASME conference: IMECE 1999 at Nashille
- Presentation on ASME conference: IMECE 2001 at New York City
II. Materials Characterization
Inverse analysis procedures were developed based on micro/nano indentions and Kalman filter technique. Methods successfully applied to the characterization of metal-ceramic graded coatings, anisotropic thin films/coatings, and other complex material systems.
Functionally Graded Material
- a typical thin-coating
- Micro-Indentation and Inverse Analysis to Characterize Graded Materials, Materials Science & Engineering A, 2003
- Determination of Anisotropic Parameters Using Instrumented Nano Indentation and Inverse Analysis, submitted to Mechanics of Materials
- Presentation at SEM symposium: 2002 at Long Island (Best Paper Award)
III. Thermal Barrier Coating
- Design optimization of pores coatings to protect gas turbine components from high temperature environments: coupled temperature-displacement, impact, and thermal fatigue analyses.
- Micro mechanical and interface properties of thermal sprayed single splats.
IV. Skills and Software
- ANSYS: the most widely used FEA/CAE package
- ABAQUS: powerful FEA package specialize in nonlinear and explicit problems
- SDRC-IDEAS: one of the most powerful design and modeling tool
- Tecplot: one of the most powerful scientific plotting tools
- SigmaPlot: very powerful and easy to learn
- MS Word, PowerPoint, Excel, FrontPage
- Maple: the most powerful symbolic calculation tool
- Matlab: technical and mathematical computation