Patent ID: 7975252
Filing Date: 2011-07-05
Classification: G06F

Abstract:
1. One or more non-transitory computer-readable media, having computer executable instructions for identifying components of a printed circuit board assembly that are most expected to suffer from field failure, the computer executable instruction comprise: causing a computer to perform a set of operations; and wherein the set of operations include: identifying one or more predefined mode shape types and assigning a threat weight to each of the one or more mode shape types; creating a computerized model of a printed circuit board assembly, the printed circuit board assembly having a plurality of components, and wherein natural frequencies, and mode shapes of the printed circuit board assembly and the plurality of components can be determined based in part upon the computerized model; performing on the computerized model a natural frequencies simulation and determining natural frequencies, and mode shapes of the printed circuit board assembly and the plurality of components; identifying, based in part upon the determined natural frequencies and mode shapes, local dominant oscillations of one of the plurality of components, wherein each one of the plurality of components identified as having a local dominant oscillation in at least one of said determined mode shapes is identified as having a higher probability for field failure as compared to the other ones of the plurality of components; and determining a threat weight corresponding to the ones of the plurality of components having a local dominant oscillation matching between the determined mode shapes and the one or more predefined mode shape types, wherein each one of the plurality of components having a determined threat weight higher than the assigned threat weight may indicate a shorter duration until the one of the plurality of components fails.