Long-Term Lives of Residual Strengths of Chloroprene  Rubber Parts Under Seasonal Degradation

Hyun-Wook Kwon; Hyung-Seok Lee; Sung-Hwa Jun; Young-Doo Kwon

doi:10.15866/ireme.v13i3.16456

Long-Term Lives of Residual Strengths of Chloroprene Rubber Parts Under Seasonal Degradation

Hyun-Wook Kwon^(1*), Hyung-Seok Lee⁽²⁾, Sung-Hwa Jun⁽³⁾, Young-Doo Kwon⁽⁴⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/ireme.v13i3.16456

Abstract

Long term lives of rubber parts in automotive industry are very crucial subject for the recent demand of lifetime reliability of automobile. Recently, adopting the HALT (highly accelerated life test) technique and 4-parameter regression model, the long term lives of gaskets to retain a minimum recovery rate could be predicted such as 15 years or 20 years as needed. In this study, adopting the similar techniques as in gasket recovery, long term residual strength to retain minimum relative ultimate tensile strength can be predicted. This characteristic is relevant to almost all rubber parts resisting to mechanical loads, except the gaskets for sealing. In addition, the Miner’s rule is applied for the case of wider range of temperature application. Through the use of this process, the reliability of machines composed of rubber parts would be far more promoted.
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Keywords

Long Term Life; Residual Strength; Chloroprene Rubber; Seasonal Degradation

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