Residuals and Their Analyses for Accelerated Life Tests With Step and Varying Stress

Analyses of residuals are used to assess a regression model, identify peculiar data points, and reveal the effect of other variables. Suitable residuals for accelerated life test data from step and varying stress tests have been needed. This article defines new, suitable residuals, and presents graphical and numerical analyses of them, which yield useful understanding of such data. Engineers can benefit from applying these techniques for more accurate test result assessments.