An optimized V-notched specimen is proposed for the determination of mode III, or torsional, critical distance. Numerical procedures are provided for the inverse determination of this length, and then for a statistical analysis of the resulting skew-normal distribution, as obtained from (symmetric) normal distributions of the plain and notched specimen strengths. An experimental example is shown on steel 42CrMo4 + QT, with clear evidence of a significantly larger mode III critical distance than mode I. A parametric analysis is then presented to evaluate the effects of size of the specimen on the standard deviation of the inverse search critical distance probability distribution.

Mode III critical distance determination with optimized V-notched specimen under torsional fatigue and size effects on the inverse search probability distribution / Santus, C.; Berto, F.; Pedranz, M.; Benedetti, M.. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - STAMPA. - 151:(2021), pp. 106351.1-106351.18. [10.1016/j.ijfatigue.2021.106351]

Mode III critical distance determination with optimized V-notched specimen under torsional fatigue and size effects on the inverse search probability distribution

Benedetti, M.
2021-01-01

Abstract

An optimized V-notched specimen is proposed for the determination of mode III, or torsional, critical distance. Numerical procedures are provided for the inverse determination of this length, and then for a statistical analysis of the resulting skew-normal distribution, as obtained from (symmetric) normal distributions of the plain and notched specimen strengths. An experimental example is shown on steel 42CrMo4 + QT, with clear evidence of a significantly larger mode III critical distance than mode I. A parametric analysis is then presented to evaluate the effects of size of the specimen on the standard deviation of the inverse search critical distance probability distribution.
2021
Santus, C.; Berto, F.; Pedranz, M.; Benedetti, M.
Mode III critical distance determination with optimized V-notched specimen under torsional fatigue and size effects on the inverse search probability distribution / Santus, C.; Berto, F.; Pedranz, M.; Benedetti, M.. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - STAMPA. - 151:(2021), pp. 106351.1-106351.18. [10.1016/j.ijfatigue.2021.106351]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/310778
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