Analysis of Accelerated Life Test Data-Part III: Product Comparisons and Checks on the Validity of the Model and Data

Abstract
This is Part III of a three-part series presenting statistical methods for planning and analyzing temperature-accelerated life tests with the Arrhenius model when all test units are run to failure. These methods are presented so they can be profitably used by individuals with a limited statistical background. In Part I, the Arrhenius model is described and graphical methods for analysis of such data are given. In Part II, numerical methods for analysis of such data are given and optimum and standard test plans are presented and compared. In Part III, graphical and numerical methods for comparing different products are given and methods for assessing the validity of the data and the assumptions of the Arrhenius model also are given. These methods are illustrated throughout with accelerated life test data on insulation. While the methods are presented for the Arrhenius model, they can be used for planning and analyzing many other accelerated life test situations.