Abstract: “To enhance the design of mechanical system, parametric Accelerated Life Testing (ALT) as systematic reliability method suggests to evaluate the design of mechanical systems subjected to repeated stresses. It involves: (1) a parametric ALT plan formed on system BX lifetime, (2) a load examination, (3) a customized parametric ALTs with the design changes, and (4) an assessment of whether the design(s) of product attains the objective BX lifetime. We suggest a general life-stress model and sample size equation. As a test case, based on market data and a customized ALT, the redesign of hinge kit system (HKS) in a refrigerator was investigated. To carry out parametric ALTs, utilizing a force and moment balance analysis, the mechanical impact loading of HKS were computed in operating the refrigerator door. At the first ALT, the HKS failure occurred in the fracture of the kit housing, and oil damper leaked when the HKS broke. The failure modes and mechanisms found in the 1st ALT were alike to”

Keywords: Lifetime Design, Hinge Kit System, Fracture, Parametric ALT, Missing Design Parameter,