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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2010.10
- 수록면
- 1,300 - 1,311 (12page)
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This study suggests the test for reliability certification on guide plate among the rail fastening system parts used for concrete sleepers. By the analysis of degradation factor it was found that the main failure mechanism was thermal aging, the failure mode was polymer degradation, and the method to detect it was mechanical physical property test.
For checking the degradation degree of using-product, collect the using-product as of usage periods, perform the mechanical physical property test and through that test, it was found that the main failure mode was tensile strength. By statistical analysis using tensile strength data, it is confirmed that the life distribution is normal distribution and the standard deviation as parameter of normal distribution is same regardless of usage periods. The failure criterion for guide plate is set as the point at which the initial property(tensile strength) is decreased to 50% and 528 is obtained as acceleration factor.
As a result, to make reliability certification equivalent to 15 years, 5 samples are subjected to thermal aging test at 100℃ of acceleration temperature for 249 hours, and then the tensile strength is measured. So if the percentage changes in tensile strength of all 5 samples are within 46.5%, 15 years of B1 life can be guaranteed at 90% of confidence level.
For checking the degradation degree of using-product, collect the using-product as of usage periods, perform the mechanical physical property test and through that test, it was found that the main failure mode was tensile strength. By statistical analysis using tensile strength data, it is confirmed that the life distribution is normal distribution and the standard deviation as parameter of normal distribution is same regardless of usage periods. The failure criterion for guide plate is set as the point at which the initial property(tensile strength) is decreased to 50% and 528 is obtained as acceleration factor.
As a result, to make reliability certification equivalent to 15 years, 5 samples are subjected to thermal aging test at 100℃ of acceleration temperature for 249 hours, and then the tensile strength is measured. So if the percentage changes in tensile strength of all 5 samples are within 46.5%, 15 years of B1 life can be guaranteed at 90% of confidence level.
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UCI(KEPA) : I410-ECN-0101-2012-326-003880164