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An optimal environmental test sequence based on severity for electrical units in automobiles

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Abstract

Electronics in automobiles must operate safely and have excellent reliability; however, components are often unreliable and cause product recalls. There is an urgent need to solve this problem. Conventionally, components are tested individually so it is not possible to simulate environmental failures. The purpose of this study was to utilize severe field-simulations and to propose determining environmental test sequence a 2-phase process for automotive electronics that satisfy the minimum severity for each leg and minimize the test cost. In this work, we examined international standards to understand testing sequences, and calculated the severity of ISO 16750 test items, based on an analytic hierarchy process. The modeled functions were established, and test sequences were optimized using a genetic algorithm. The proposed test sequence was based on the results of this analysis by assumed real conditions. Additionally, the variance analysis was performed for the affected total cost to find factors about determined test sequences. Finally, significant test sequences of ISO 16750 were partially presented by analyzing the results for applying in the automotive industry.

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Acknowledgments

This work was supported by Kyonggi University’s Graduate Research Assistantship 2019.

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Correspondence to Yong Soo Kim.

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This paper was presented at ICMR-2019, Maison Glad Jeju, Jeju, Korea, November 27–29, 2019.

Hyun Su Sim received M.S. degree from Kyonggi University, Republic of Korea in 2019. He is a Ph.D. candidate in Industrial and Management Engineering, Kyonggi University, Republic of Korea. His research interests include reliability engineering.

Yong Soo Kim is an Associate Professor at the Department of Industrial and Management Engineering, Kyonggi University, Republic of Korea. He received B.S., M.S. and Ph.D. degrees in industrial engineering from KAIST, respectively. His research interests include decision support system, data mining, and social network analysis. Nowadays, his research topics are focused on quality, reliability, function safety, statistics, and data mining.

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Sim, H.S., Kim, Y.S. An optimal environmental test sequence based on severity for electrical units in automobiles. J Mech Sci Technol 34, 4051–4059 (2020). https://doi.org/10.1007/s12206-020-2216-7

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  • DOI: https://doi.org/10.1007/s12206-020-2216-7

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