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자동차 냉각기 호스용 EPDM 고무의 복합 가속수명 평가Combined Accelerated-Life Evaluation of EPDM Rubber for Automotive Radiator Hoses
- Other Titles
- Combined Accelerated-Life Evaluation of EPDM Rubber for Automotive Radiator Hoses
- Issue Date
- Nov-2011
- Publisher
- 대한기계학회
- Keywords
- 고장메커니즘; EPDM rubber; 기계적 변형률; Mechanical strain; Electro-chemical degradation; Arrhenius equation; EPDM 고무; 아레니우스 관계식; 전기화학적 노화; Failure mechanisms
- Citation
- 2011년도 대한기계학회 추계학술대회 논문집, pp 3015 - 3020
- Pages
- 6
- Indexed
- OTHER
- Journal Title
- 2011년도 대한기계학회 추계학술대회 논문집
- Start Page
- 3015
- End Page
- 3020
- Abstract
- Coolant rubber hoses for automotive radiators can be degraded due to the influences of the locally formed electricity. In this study, we developed a test apparatus for rubber materials under combined electro-chemical stresses together with the simultaneous application of mechanical and thermal loads. Changing behaviors of the current and the resistance as a function of aging time were analyzed in consideration of tensile strains and aging temperature. The investigation on the sectioned specimens clarified failure mechanisms in the aged skin layer under the combined electro-chemical stresses. This study suggested some approximate predictions of accelerated life through an Arrhenius formula considering the aging temperature and mechanical strains.
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