On determination of mode II fracture toughness using semi-circular bend specimen
By M. Ayatollahi, M. Aliha. 2006
160 citations recorded by the source corpus.
The cracked semi-circular specimen subjected to three-point bending has been recognized as an appropriate test specimen for conducting mode I, mode II and mixed mode I/II fracture tests in brittle materials. The manufacturing and pre-cracking of the specimen are simple. No complicated loading fixture is also required for a fracture test. However, almost all of the theoretical criteria available for mixed mode brittle fracture fail to predict the experimentally determined mode II fracture toughness obtained from the semi-circular bend (SCB) specimen. In this paper, a modified maximum tangential stress criterion is used for calculating mode II fracture toughness KIIc in terms of mode I fracture toughness KIc. The modified criterion is used for predicting the reported values of mode II fracture toughness for two brittle materials: a rock material (Johnstone) and a brittle polymer (PMMA). It is shown that the modified criterion provides very good predictions for experimental results. 2005 Elsevier Ltd. All rights reserved.
Subfields: Mechanical Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/fd7373473651bad3c919a650ec8bf75e312abc6a
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In Mechanical Engineering
In Mechanics of Materials
Citations in the corpus
- Effects of temperature and confining pressure on mixed-mode (I–II) and mode II fracture toughness of Kimachi sandstone (2014, methodology): “They explain that the effect of T-stress component of the crack tip stress function should be included in a conventional failure criterion such as MTS criterion and they were successful in showing that the generalized theory agrees well with experimental results [27,28,37,38].”
- Effects of strain rate on fracture toughness and energy release rate of gas shales (2017, background): “…specimen (Banks-Sills and Bortman, 1986; Mahajan and Ravi-Chandar, 1989) and the edge-cracked semi-circular bending specimen (Aliha et al., 2006; Ayatollahi and Aliha, 2006; Chong and Kuruppu, 1984; Chong et al., 1987; Kuruppu and Chong, 2012; Lim et al., 1993, 1994b; Mahanta et al., 2016b).”
- Analysis of a new specimen for mixed mode fracture tests on brittle materials (2009, methodology): “This deviation can be rationalized by using a modified form of the MTS criterion which considers the effects of a non-singular stress term (called the T-stress) on mode II brittle fracture [26,27].”
- Influence of relative humidity on fracture toughness of rock: Implications for subcritical crack growth (2012, background): “Several researchers have investigated the fracturing and failure of various solids (e.g., Atkinson, 1982, 1984; Atkinson and Meredith, 1987a,b; Biolzi and Labuz, 1993; Ayatollahi and Aliha, 2006; Ayatollahi and Torabi, 2010).”