Hold-Time Effects on the Elevated Temperature Fatigue-Crack Propagation of Type 304 Stainless Steel
- 1 December 1972
- journal article
- research article
- Published by Taylor & Francis in Nuclear Technology
- Vol. 16 (3) , 521-530
- https://doi.org/10.13182/nt72-a31220
Abstract
Fracture mechanics techniques were used to study the effects of loading waveform and holdtime on the fatigue-crack propagation behavior of Type 304 stainless steel at 1000°F. At frequencies of 4 and 0.33 cpm, there was little observable difference between the results using a sawtooth waveform, and those using a square wave with hold-time. At 0.083 cpm, however, the tests with hold times exhibited a somewhat lower rate of crack growth than those using a sawtooth waveform. The reason for this is unknown, but several possible explanations are offered.Keywords
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