| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5029425 | Procedia Engineering | 2016 | 7 Pages |
Abstract
The influence of frequency (20kHz ultrasonic tests and conventional 20 to 35Â Hz tests) and environment (air and vacuum) on near-threshold fatigue crack propagation of three metallic alloys, Ti-6Al-4V, 2024-T351 and 12% Cr stainless steel is compared experimentally. The effective stress-intensity factor which is considered as the propagation driving force is determined from closure measurements or tests run at high R-ratio. Based on microfractographic observations, the results are discussed in terms of a preexisting model for intrinsic and environmentally assisted fatigue crack propagation.
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Authors
C. Sarrazin-Baudoux, S.E. Stanzl-Tschegg, B.M. Schönbauer, J. Petit,