Journal of Power System Engineering (동력기계공학회지)
- Volume 6 Issue 1
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- Pages.55-60
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- 2002
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- 2713-8429(pISSN)
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- 2713-8437(eISSN)
Evaluation on Creep Life Prediction of Aircraft Gas Turbine Material by AE
음향방출법에 의한 항공기용 가스터빈 재료의 크리프 수명예측 평가
- Published : 2002.02.28
Abstract
There has been no report on the life prediction for gas turbine materials at high temperatures based on the creep properties and their relationship with the AE(acoustic emission) properties as a means of real-time non-destructive testing. One of the important issues is thus to develop a reliable method of evaluating creep properties by the AE technique. In this paper, the real-time evaluation of high temperature creep time and AE cumulative counts for nickel-based superalloy Udimet 720 was performed on round-bar type specimens under pure load at the temperatures of 811, 922 and 977K. The total AE cumulative counts until the starting point of secondary creep(
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