Parametric ALT and Its Case Studies

Abstract

Final mechanical products through design process are designed to have no enough strength and stiffness in product lifetime. Even though properly designed, mechanical products have faulty designs. By parametric ALT, engineer might find and correct them. At that time it is important to have deep insights how to apply the reliability testing. In this chapter, parametric ALT and its case studies will be applicable to a variety of mechanical product—automobile, construction equipment, appliance, airplane, and the others. Parametric ALT is a kind of methodology to confirm if mechanical products in the reliability-embedded design process satisfy the reliability target. The parametric ALT has the following procedure: (1) setting reliability target, (2) determining the accelerated factor, (3) if sample size is given, the parametric ALT will be carried out to the testing time required to meet the reliability target (or its specification). By identifying the faulty designs and modify them, new product will confirm if the reliability target achieves.