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Analysis of Stress Intensity Factors for Curved Cracks.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1993
In this paper, the hypersingular integral equation method (HIEM) is applied to calculate the stress intensity factors of curved crack problems. The stress fields induced by two kinds of displacement discontinuity are used as fundamental solutions. Then, the problem is formulated as a system of integral equations with the singularity of the form of r-2.
Noda, Nao-Aki   +2 more
openaire   +2 more sources

Stress intensity factor threshold in dental porcelains

open access: yesJournal of Materials Science: Materials in Medicine, 2007
The stress intensity factor threshold (KI0) is related to the stress level at which cracks start to grow stably, causing the weakening of porcelain prostheses during their use. The values of KI0 of seven dental porcelains (with and without reinforcing leucite crystal, KAlSi2O6) stored in air (22 degrees C, 60% relative humidity) and artificial saliva ...
Humberto Naoyuki, Yoshimura   +3 more
openaire   +2 more sources

Stress Intensity Factors - T-Stresses - Weight Functions

open access: yes, 2008
Failure of cracked components is governed by the stresses in the vicinity of the crack tip. The singular stress contribution is characterised by the stress intensity factor K, the first regular stress term is represented by the so-called T-stress. Sufficient information about the stress state is available, if these two parameters are known Results for ...
openaire   +5 more sources

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