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Proceedings Paper

Computerized simulation and experimental investigation of laser soldering of PECT: modeling and verification
Author(s): Dong Du; Yunfeng He; Bo Sui; Lijuan Xiong
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Paper Abstract

In this paper, we propose laser-soldering method and use the process assisted with wire-mesh and soldering paste to weld the lateral electrode of piezoelectric ceramics transformer (PECT). The PECT were connected very well and were not affected much by heat. The process shows the good promise to the joint problems in multilayer heterogeneous lamination similarity to the PECT. Based on the above, our focus is on validating the finite element model, we build three-dimensional model of laser soldering temperature field in multilayer materials. Then, the reasonable simplification of heat source, materials parameters are put up in order to perform an efficient finite element analysis and the adaptive finite element technique is adopted. The temperature distribution characteristic in the laser soldering is acquired and verified by comparing experimental data. Although the finite element model contains numerous simplifications, the differences between experimental data and computed results are within 5%. The study shows that the adaptive finite element schemes give good agreement with the experimental data, which provides the theory reference for formulating correct process and optimizing joint properties. In addition, more exact material properties would improve the solution accuracy.

Paper Details

Date Published: 12 September 2002
PDF: 7 pages
Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482863
Show Author Affiliations
Dong Du, Tsinghua Univ. (China)
Yunfeng He, Tsinghua Univ. (China)
Bo Sui, Tsinghua Univ. (China)
Lijuan Xiong, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 4915:
Lasers in Material Processing and Manufacturing
ShuShen Deng; Tatsuo Okada; Klaus Behler; XingZong Wang, Editor(s)

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