Fracture statistics of torsion and dispersion relations in round bars
DOI:
https://doi.org/10.3989/mc.1990.v40.i219.770Abstract
This paper has adopted a theoretical viewpoint for studying Fracture Statistics in round bars subjected to torsion, and for determining the cumulative probabilities of fracture using Weibull's specific-risk function for materials that exhibit volume and surface brittleness. The use of the defined-functions method has allowed to get the specific-risk-of-fracture function and, in addition, to carry out a separation between volume part and surface part concerning materials presenting both brittlenesses at the same time. Dispersion of the parameters are determined resorting to Fisher's information matrix.
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