The variation of fracture toughness with specimen thickness for Comsteel En25 compact tension specimens ranging in thickness from 4 mm to 25 mm and tempered from the asquenched state to 600ยฐC is predicted reasonably well using the models proposed by Bluhm Proc. ASTM 61, 1324 (1961) and by Hahn er al
Effect of specimen thickness on Mode II fracture toughness of rock
โ Scribed by Rao, Qiu-hua ;Sun, Zong-qi ;Wang, Gui-yao ;Xu, Ji-cheng ;Zhang, Jing-yi
- Book ID
- 107505932
- Publisher
- Chinese Electronic Periodical Services
- Year
- 2001
- Tongue
- English
- Weight
- 406 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1005-9784
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J-integral resistance curves for three specimen thicknesses and valid (according to ASTM Method E 399) K~ values at 76 K are reported for aluminum alloy 2219. The J-integral values were independent of thickness at small crack extensions, but at substantial crack extensions the values for the thin sp
The centrally cracked Brazilian disc specimen has been used frequently in the past for investigating mixed mode I-II fracture toughness in rock materials. However, a review of the available test results reveals that the conventional fracture criteria like the maximum tangential stress criterion alwa