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Materials pp 159-166 | Cite as

Long-Crack Fatigue Thresholds and Short Crack Simulation at Liquid Helium Temperature

  • R. L. Tobler
  • J. R. Berger
  • A. Bussiba
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 38)

Abstract

A short crack simulation (SCS) test is used to characterize the near—threshold fatigue crack growth behavior of stainless steels at 4 K. The test methodology holds the maximum stress intensity factor constant while increasing the minimum stress intensity factor, thus raising the stress ratio from 0.1 at the start to about 0.8 at the end of the test. The resulting fatigue crack growth rate measurements are unaffected by crack closure, and the intrinsic threshold is directly obtained without a correction factor. Merits of the test procedure are described.

Keywords

Stress Intensity Factor Crack Growth Rate Fatigue Crack Growth Crack Closure Fatigue Crack Propagation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • R. L. Tobler
    • 1
  • J. R. Berger
    • 1
  • A. Bussiba
    • 1
    • 2
  1. 1.Materials Reliability DivisionNational Institute of Standards and TechnologyBoulderUSA
  2. 2.Nuclear Research Center-NegevBeer-ShevaIsrael

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