| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 가을 (10/30 ~ 11/01, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
23권 2호 |
| 발표분야 |
포스터_고분자 |
| 제목 |
Accelerated aging of thermoplastic polyurethane and its life prediction for use in underwater acoustic sensor |
| 초록 |
Life of thermoplastic polyurethane (TPU) hose used in underwater acoustic sensor was predicted by using accelerated life test (ALT). The ALT was conducted by aging the TPU hose in four different heating conditions at 40, 70, 85, 100, 110 and 125 °C. After aging, the mechanical properties of TPU hose measured for given periods. Changes in the mechanical properties were expressed as master curves by regression method and then the failure times of TPU hose was obtained from the master curves. To interpret the ALT data of TPU hose, mathematical relations including life distribution and acceleration models were used and their parameters were estimated by using the maximum likelihood estimation (MLE) method. The MLE result indicated that Arrhenius model and Weibull distribution provides the best fit for the ALT data. From the Arrhenius-Weibull model, the failure time of half of TPU hose for tensile strength and tear resistance were estimated to be 90.0 and 16.4 years, respectively. |
| 저자 |
최은엽1, 김무현1, 이승연1, 김창근1, 신정채2
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| 소속 |
1중앙대, 2(주)한화 |
| 키워드 |
thermoplastic; polyurethane; accelerated life test; mechanical properties; maximum likelihood estimation; polymer
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| E-Mail |
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