Elastic–plastic fatigue crack growth in 18G2A steel under proportional bending with torsion loading |
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Authors: | D ROZUMEK E MACHA |
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Affiliation: | Technical University of Opole, ul. Miko?ajczyka 5, 45–271 Opole, Poland |
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Abstract: | The paper presents the results of fatigue crack growth on low‐alloy 18G2A steel under proportional bending with torsion loading. Specimens with square sections and a stress concentration in the form of external one‐sided sharp notch were used. The tests were performed under the stress ratios R=?1, ?0.5 and 0. The test results were described by the ΔJ‐integral range and compared with the ΔK stress intensity factor range. It has been found that there is a good agreement between the test results and the model of crack growth rate, which includes the ΔJ‐integral range. |
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Keywords: | fatigue crack growth ΔJ-integral range stress ratio mixed mode |
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