Estimating the tensile strength of superhard brittle materials using truncated spheroidal specimens

Article


Serati, Mehdi, Alehossein, Habib and Williams, David J.. 2015. "Estimating the tensile strength of superhard brittle materials using truncated spheroidal specimens." Journal of the Mechanics and Physics of Solids. 78, pp. 123-140. https://doi.org/10.1016/j.jmps.2015.02.011
Article Title

Estimating the tensile strength of superhard brittle materials using truncated spheroidal specimens

ERA Journal ID5152
Article CategoryArticle
AuthorsSerati, Mehdi (Author), Alehossein, Habib (Author) and Williams, David J. (Author)
Journal TitleJournal of the Mechanics and Physics of Solids
Journal Citation78, pp. 123-140
Number of Pages18
Year2015
Place of PublicationUnited Kingdom
ISSN0022-5096
1873-4782
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jmps.2015.02.011
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0022509615000423
Abstract

New approaches need to be introduced to measure the tensile capacity of super hard materials since the standard methods are not effective. To pursue this objective, a series of laboratory tests were constructed to replicate the fracture mechanism of diamond-based materials. Experiments indicate that under a certain compressive test condition, stresses normal to the axisymmetric line in truncated spheroidal specimens (bullet-shaped specimens) are in tension contributing to the tensile fracture of the material. From experimental and numerical studies, it is concluded that semi-prolate spheroidal specimens can be used to determine precisely the tensile strength of brittle stiff diamond-like composites.

Keywordsbrittle fracture; diamond composites; finite element modelling; semi-analytical approach; super hardmaterials tensile strength measurement
ANZSRC Field of Research 2020400502. Civil geotechnical engineering
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Byline AffiliationsUniversity of Queensland
School of Civil Engineering and Surveying
Institution of OriginUniversity of Southern Queensland
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