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http://dx.doi.org/10.5762/KAIS.2020.21.11.233

Accelerated Life Prediction on Tensile Strength of Oil Resistance HNBR  

Kim, Kyung Pil (Resources Planning Division, Defense Agency for Technology and Quality (DTaQ))
Lee, Yong Seok (Chemistry Engineering Department, Chonbuk National University)
Yeo, Yong Heon (Combat Materiel Center, Defense Agency for Technology and Quality (DTaQ))
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.11, 2020 , pp. 233-238 More about this Journal
Abstract
Although the interest in NBR has been increasing due to the recent developments of the aerospace sector, there are few reports on HNBR's aeronautical oil, particularly evaluations of the accelerated life of harsh factors. In this study, the tensile strength was adopted as a performance evaluation factor to evaluate the accelerated life of HNBR used in the aviation field. The accelerated stress factor affecting the performance-aging characteristics was defined as temperature. The acceleration stress factor was determined to be temperature, and the result of measuring the tensile strength change over time. The sample for the acceleration condition was taken out of the oven for a certain period and left at room temperature for 24 hours. The dumbbell type 3 specimens were manufactured according to the standard specified in KS M 6518 and were measured the tensile strength, a factor in accelerated life evaluations. The activation energy was 0.895, and the shape parameter was 1.152 using the Arrhenius model. The characteristic life obtained from the tensile strength of the HNBR specimen immersed in aviation oil at 20℃ was 272,256 hours; the average life was 258,965 hours, and the B10 life was 38,624 hours.
Keywords
Accelerated Life; HNBR; Tensile Strength; Activation Energy; Minitab;
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