Structured Method to Establish the Enhance of Fatigue Life of Mechanical System Such as a Drawer by Accelerated Tests

Authors

  • Seongwoo Woo Manufacturing Technology, Mechanical Technology Faculty, Ethiopian Technical University, Addis Ababa, P.O. Box 190310, Ethiopia.
  • Dennis L. O’Neal Department of Mechanical Engineering, School of Engineering and Computer Science, Baylor University, Waco, TX 76798-7356, USA.
  • Yimer Mohammed Hassen Manufacturing Technology, Mechanical Technology Faculty, Ethiopian Technical University, Addis Ababa, P.O. Box 190310, Ethiopia.
  • Gezae Mebrahtu Manufacturing Technology, Mechanical Technology Faculty, Ethiopian Technical University, Addis Ababa, P.O. Box 190310, Ethiopia.

DOI:

https://doi.org/10.9734/bpi/rpst/v7/18732D

Keywords:

Fatigue, parametric ALT, mechanical system, drawer, design faults

Abstract

Parametric Accelerated Life Testing (ALT) is suggested as a method to locate design flaws and lessen fatigue failure in order to increase the lifespan of a mechanical system. It also includes a sample size equation for the ALT and a derivation of the generalized time to failure model by the linear transport process. As an example, a refrigerator drawer was given. The center support was bent and the rail rollers broke after loading. The rail roller support was lengthened, and the center support received additional ribs. The box cover at the first ALT failed close to where the cover and body converged. The rib and fillet were then added in greater amounts to the box. The center support and rails fractured at the second ALT. They were changed by thickening the rib and rounding the corners. There were no problems after the third ALT. The drawer life was guaranteed to be B1 life 10 years.

Published

2023-03-15

How to Cite

Seongwoo Woo, Dennis L. O’Neal, Yimer Mohammed Hassen, & Gezae Mebrahtu. (2023). Structured Method to Establish the Enhance of Fatigue Life of Mechanical System Such as a Drawer by Accelerated Tests. Recent Progress in Science and Technology Vol. 7, 1–29. https://doi.org/10.9734/bpi/rpst/v7/18732D

Issue

Recent Progress in Science and Technology Vol. 7

Section

Chapters