Journal of Korean Institute of Industrial Engineers (대한산업공학회지)

Korean Institute of Industrial Engineers (대한산업공학회)
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Development of Reliability Design Methodology Using Accelerated Life Testing and Taguchi Method

가속 수명시험과 다구치 방법을 활용한 신뢰성설계 방법의 개발

  • Kim, Min (Department of Industrial Engineering, Korea Advanced Institute of Science and Technology) ;
  • Yum, Bong-Jin (Department of Industrial Engineering, Korea Advanced Institute of Science and Technology)
  • 김민 (한국과학기술원 산업공학과) ;
  • 염봉진 (한국과학기술원 산업공학과)
  • Published : 2002.12.31
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Abstract

The inherent reliability of a product is primarily determined in the design stage, and therefore, design engineers should be able to design reliability into the product in an efficient manner. Especially, the product should be designed such that its reliability is robust to various noise factors encountered in production and field environments. The Taguchi method can be effectively used for this purpose. However, there exist only a few attempts to integrate the Taguchi method with reliability design, and in addition, the existing works do not sufficiently consider the robustness and/or the distinction between noise and acceleration factors. This paper develops a unified approach to robust reliability design assuming that accelerated life tests are conducted at each combination of design and noise conditions. First, an experimental structure for assigning not only acceleration but also noise factors is presented. Second, the reliability at the use condition is estimated using the assumed accelerated life test model. Third, reliabilities are transformed into 'efforts' using an effort function which reflects the degree of difficulty involved in improving the reliability. Finally, an optimal setting of design parameters is determined based on the mean and standard deviation of the effort values. The above approach is illustrated with an example of a paper feeder design.

Keywords

References

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