Reliability test target development

An automotive company's goal is to design and manufacture vehicles that will meet the needs and the expectations of the customers. It is essential for the design engineer to understand and take into account all sources of variation, which will be encountered by the system or component being developed. In this paper, the methods of derivation for the reliability test target requirement (at 95/sup th/ percentile customer usage severity level) from a given field target requirement (in C/100) is described. Formulas are derived under the assumption that both stress and strength are normally distributed, lognormally distributed, and Weibull distributed.