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A Simplified Probabilistic Approach to Estimating the Safety Factors of Crack Resistance

  • RELIABILITY, STRENGTH, AND WEAR RESISTANCE OF MACHINES AND STRUCTURES
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Abstract

The correlation dependences between the safety factors of the yield stress and the safety factors of the crack resistance characteristics (fracture viscosity, crack resistance diagram, critical J integral, and crack-tip opening displacement) are provided. It is proposed to calculate the probabilistic safety factors at preset failure probabilities by means of the probabilistic safety factors of the yield stress, taking into account their correlation, as well as the independence of the static mechanical performance variation coefficients from the type of limit state. The results of calculating the probabilistic safety factors applied to fracture viscosity and the crack resistance diagram are provided.

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Funding

This work was supported by the Russian Science Foundation, project 18-19-00351.

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Correspondence to Yu. G. Matvienko.

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Translated by S. Kuznetsov

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Matvienko, Y.G. A Simplified Probabilistic Approach to Estimating the Safety Factors of Crack Resistance. J. Mach. Manuf. Reliab. 50, 200–207 (2021). https://doi.org/10.3103/S1052618821030092

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  • DOI: https://doi.org/10.3103/S1052618821030092

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