Reliability assessment based on multiple sources of accelerated testing data

Zhonghai Ma, Shaoping Wang, Haitao Liao, Chao Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Reliability testing is an indispensable tool for evaluating the lifetime of a product. To satisfy the needs for the use of advanced technologies, the requirements of design, manufacturing and reliability for some key components are becoming higher and higher. Because of the high reliability of such components, it is difficult to obtain failure time data in a limited time period via regular life tests or even accelerated life test (ALT). As an alternative, accelerated degradation test (ADT) can also be conducted to collect performance degradation data under accelerated operations. The issue is how to evaluate the reliability of the product using both ALT and ADT data. To solve the problem, a multi data fusion model needs to be developed to integrate these two types of data. In this paper, an Expectation-maximization (EM) algorithm is developed for the estimation of model parameters in data fusion. The method evaluates the product's reliability more accurately. A numerical example is presented to illustrate the use of the proposed method in practice, and show the value of the method in improving the estimation accuracy.

Original languageEnglish (US)
Title of host publicationProceedings of the 8th International Conference on Fluid Power and Mechatronics, FPM 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1269-1275
Number of pages7
ISBN (Electronic)9781728103112
DOIs
StatePublished - Apr 2019
Event8th IEEE International Conference on Fluid Power and Mechatronics, FPM 2019 - Wuhan, China
Duration: Apr 10 2019Apr 13 2019

Publication series

NameProceedings of the 8th International Conference on Fluid Power and Mechatronics, FPM 2019

Conference

Conference8th IEEE International Conference on Fluid Power and Mechatronics, FPM 2019
Country/TerritoryChina
CityWuhan
Period4/10/194/13/19

Keywords

  • Accelerated degradation test (ADT)
  • Accelerated life test (ALT)
  • Expectation- maximization (EM) algorithm
  • Multi data fusion model

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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