Abstract
The major objective of tolerance analysis is to check whether the resultant or assembly tolerances conform to the design specifications in individual components. Although the first four moments were used to describe assembly reject rate, there are no further applications in reliability index and assembly yield. Therefore, a novel tolerance analysis method to estimate the assembly yield based on first four moment reliability index is proposed. Firstly, some basic definitions are given. Secondly, the tolerance analysis model based on the first fourth moment reliability index (FMRI) is developed. Furthermore the assembly yield models based on FMRI, for both individual design function and multi-design functions are presented.
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