Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
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Modeling and Analysis of Accelerated Degradation Testing Data for a Solid State Drive (SSD)

Solid State Drive(SSD)에 대한 가속열화시험 데이터 모델링 및 분석

  • 문병민 (한양대학교 산업공학과) ;
  • 최영진 (한양대학교 산업공학과) ;
  • 지유민 (SK하이닉스 NAND개발사업총괄) ;
  • 이용중 (SK하이닉스 NAND개발사업총괄) ;
  • 이근우 (SK하이닉스 NAND개발사업총괄) ;
  • 나한주 (SK하이닉스 NAND개발사업총괄) ;
  • 양중섭 (SK하이닉스 NAND개발사업총괄) ;
  • 배석주 (한양대학교 산업공학과)
  • Received : 2018.01.05
  • Accepted : 2018.01.12
  • Published : 2018.03.25
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Abstract

Purpose: Accelerated degradation tests can be effective in assessing product reliability when degradation leading to failure can be observed. This article proposes an accelerated degradation test model for highly reliable solid state drives (SSDs). Methods: We suggest a nonlinear mixed-effects (NLME) model to degradation data for SSDs. A Monte Carlo simulation is used to estimate lifetime distribution in accelerated degradation testing data. This simulation is performed by generating random samples from the assumed NLME model. Conclusion: We apply the proposed method to degradation data collected from SSDs. The derived power model is shown to be much better at fitting the degradation data than other existing models. Finally, the Monte Carlo simulation based on the NLME model provides reasonable results in lifetime estimation.

Keywords

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