Published experimental data for stress-rupture strength with stepwise loading and cyclic overloads are analyzed. On the basis of generalizing these data a procedure is suggested for calculating the equivalent failure stress and calculation errors are determined. Statistical treatment shows that these errors are within the limits of the natural scatter of high-temperature material properties in stress-rupture tests. It is established that in order to carry out calculations normal stress-rupture strength curves are required.
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Translated from Problemy Prochnosti, No. 4, pp. 23–29, April, 1994.
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Mustafin, C.G. Evaluation of stress-rupture strength with a programmed change in stresses. Strength Mater 26, 259–264 (1994). https://doi.org/10.1007/BF02207404
- Experimental Data
- Material Property
- Statistical Treatment
- Calculation Error
- Failure Stress