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

Serati, Mehdi and 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. ISSN 0022-5096

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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files unable to be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 31 May 2016 11:38
Last Modified: 06 Feb 2018 01:53
Uncontrolled Keywords: brittle fracture; diamond composites; finite element modelling; semi-analytical approach; super hardmaterials tensile strength measurement
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8610 Ceramics, Glass and Industrial Mineral Products > 861099 Ceramics, Glass and Industrial Mineral Products not elsewhere classified
Identification Number or DOI: 10.1016/j.jmps.2015.02.011
URI: http://eprints.usq.edu.au/id/eprint/27398

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