Journal of Electronic Testing Theory and Application, Vol. 22, pp. 49-60, 2006

Optimization of Test/Diagnosis/Rework Location(s) and Characteristics in Electronic System Assembly

Zhen Shi and Peter Sandborn
CALCE EPSC
University of Maryland
College Park, MD 20742

Abstract:

In this paper, an optimization methodology is used to select the locations and characteristics of test, diagnosis and rework operations in electronic systems assembly processes. Real-coded genetic algorithms are used to perform a multi-variable optimization that minimizes the yielded cost of products resulting from an assembly process that includes test/diagnosis/rework operations characterized by costs, yields fault coverage, and rework attempts. A general complex process flow is analyzed using the algorithms proposed in this paper, and a multichip module assembly process flow is used to demonstrate that the methodology can identify optimum test and rework solutions that result in a reduction in yielded cost.

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