The Effect of Cavities and Channels on the Strength of LTCC Substrate
The effect of cavities and channels on the strength of LTCC substrate has been investigated by finite element analysis with commercial software ANSYS. The simulation model is based on three-point bending test of thick film LTCC substrate. Axial tensile stress and shear stress among layers are characterized to describe the effect on flexural strength and inter-layer shear strength. X, Y-axial channels, Z-axial via-hole, and cavities of various amounts are formed in the middle or surface layers of the LTCC substrate. The simulation results show that the maximum tensile stress always appears on the midline of the substrate bottom and causes fracture. The shear stress concentration has been found on the sidewalls of the holes and cavities and enhances the interlayer stripping.
Yang-Fei Zhang Min Miao Shu-Lin Bai Yu-Feng Jin
Centre for Advanced Composite Materials, Department of Advanced Materials and Nanotechnology, LTCS, National Key Laboratory on Micro/nano Fabrication Technology, Peking University, Beijing 100871, Chi National Key Laboratory on Micro/nano Fabrication Technology, Peking University, Beijing 100871, Chi
国际会议
第八届电子封装技术国际会议(2007 8th International Conference on Electronics Packaging Technology ICEPT2007)
上海
英文
93-96
2007-08-14（万方平台首次上网日期，不代表论文的发表时间）