A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Quantifying creep damage in a metallic alloy using acousto-ultrasonics
Due to elevated temperatures and excessive stresses, turbine components may experience creep behavior. As a result, it is desirable to monitor and assess the current condition of such components. This study used the acousto-ultrasonics (AU) method in an effort to monitor the state of the material at various percentages of expended (i.e., used-up creep life) creep life in the nickel base alloy, Udimet 520. A stepped specimen (i.e., varying cross-sectional area) was used, which allowed for a post mortem nondestructive evaluation (NDE) analysis of the various levels of expended life. The overall objectives in this study were two-fold: First, a user-friendly, graphical interface AU system was developed, and second, the new AU system was applied as a NDE tool to assess distributed damage resulting from creep. The experimental results demonstrated that the AU method was able to detect material changes as a function of expended creep life.
Quantifying creep damage in a metallic alloy using acousto-ultrasonics
Due to elevated temperatures and excessive stresses, turbine components may experience creep behavior. As a result, it is desirable to monitor and assess the current condition of such components. This study used the acousto-ultrasonics (AU) method in an effort to monitor the state of the material at various percentages of expended (i.e., used-up creep life) creep life in the nickel base alloy, Udimet 520. A stepped specimen (i.e., varying cross-sectional area) was used, which allowed for a post mortem nondestructive evaluation (NDE) analysis of the various levels of expended life. The overall objectives in this study were two-fold: First, a user-friendly, graphical interface AU system was developed, and second, the new AU system was applied as a NDE tool to assess distributed damage resulting from creep. The experimental results demonstrated that the AU method was able to detect material changes as a function of expended creep life.
Quantifying creep damage in a metallic alloy using acousto-ultrasonics
Quantifizierung von Kriechschäden in einer Metalllegierung mittels Akusto-Ultraschall
Gyekenyesi, A.L. (author) / Kautz, H.E. (author) / Shannon, R.E. (author)
Journal of Materials Engineering and Performance ; 11 ; 205-210
2002
6 Seiten, 13 Quellen
Article (Journal)
English
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