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A load spectra design method for multi-stress accelerated testing

Author

Listed:
  • Zhonghai Ma
  • Songlin Nie
  • Haitao Liao

Abstract

Accelerated testing (AT) is an effective testing method for evaluating the reliability of highly reliable products. In many applications, such products are often subject to multiple stresses in actual working environments. Then, how to design the load spectra for multi-stress AT becomes a critical issue. In this paper, a new load spectra design method is proposed to overcome this challenge. Considering the properties of multiple stresses, a novel multi-stress loading matrix (MSLM) is modified to fully describe the load spectra in actual working environments and to generate the corresponding load spectra for AT. For illustration purposes, an inverse Gaussian (IG) process incorporating life-stress relationships is adopted to model product degradation under multiple stresses. A case study on a type of hydraulic piston pump is provided to demonstrate the use of the proposed method in guiding the load spectra design for multi-stress AT.

Suggested Citation

  • Zhonghai Ma & Songlin Nie & Haitao Liao, 2022. "A load spectra design method for multi-stress accelerated testing," Journal of Risk and Reliability, , vol. 236(6), pages 994-1006, December.
    • Handle: RePEc:sae:risrel:v:236:y:2022:i:6:p:994-1006
    DOI: 10.1177/1748006X211062012
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    References listed on IDEAS

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    1. Pan, Zhengqiang & Balakrishnan, Narayanaswamy, 2011. "Reliability modeling of degradation of products with multiple performance characteristics based on gamma processes," Reliability Engineering and System Safety, Elsevier, vol. 96(8), pages 949-957.
    2. Yada Zhu & Elsayed A. Elsayed, 2013. "Design of accelerated life testing plans under multiple stresses," Naval Research Logistics (NRL), John Wiley & Sons, vol. 60(6), pages 468-478, September.
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