The ramifications of the definition of failure on solder joint fatigue life are discussed in terms of two considerations: (1) the dependence of the measured damage parameter (load drop or resistance increase) on the solder joint area and (2) the time profile of solder joint area. The latter is influenced by the applied displacement profile, the assembly stiffness, the deformation properties of the solder joint, and the dependence of rate of fatigue damage accumulation on its driving force. Experimental data are presented to illustrate the influence of these considerations on failure criterion. An integral methodology is used for the description of damage accumulation. Representative simulations are performed that demonstrate failure criterion effects on apparent fatigue life. Isothermal mechanical displacement controlled cyclic loading is emphasized. The principles presented may also be applied to thermal cycling of solder interconnects.
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June 1990
Research Papers
Assembly Stiffness and Failure Criterion Considerations in Solder Joint Fatigue
J. R. Wilcox,
J. R. Wilcox
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
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R. Subrahmanyan,
R. Subrahmanyan
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
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Che-Yu Li
Che-Yu Li
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
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J. R. Wilcox
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
R. Subrahmanyan
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
Che-Yu Li
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
J. Electron. Packag. Jun 1990, 112(2): 115-122 (8 pages)
Published Online: June 1, 1990
Article history
Received:
April 6, 1990
Online:
April 28, 2008
Citation
Wilcox, J. R., Subrahmanyan, R., and Li, C. (June 1, 1990). "Assembly Stiffness and Failure Criterion Considerations in Solder Joint Fatigue." ASME. J. Electron. Packag. June 1990; 112(2): 115–122. https://doi.org/10.1115/1.2904351
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