Modified Brazilian test for indirect measurement of tensile strength of brittle materials

M. Serati, H. Masoumi, D. J. Williams, H. Alehossein

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8 Citations (Scopus)

Abstract

The applicability of a new test method involving semi-circular (truncated) Brazilian disc specimens is examined in this study to effectively eliminate the unwanted high shear stresses at the loading points, as well as the multiple cracking that commonly occurs in the testing of standard Brazilian dicks comprising hard and brittle materials. A series of tests with a wide range of hard and brittle materials, including various types of rocks and ceramics, was carried out. In all tests performed, a single straight plane of fracture was observed. Through finite element numerical modelling and high-speed photography of the fracture process, the rupture mechanism was further confirmed to be the result of an indirect tensile stress induced inside the specimens. Based on the results, it is concluded that truncated Brazilian specimens can conveniently be adopted to determine the tensile strength of a target material, rather than the standard disc profiles in which catastrophic local cracking makes the procedure unreliable.

Original languageEnglish
Title of host publication51st US Rock Mechanics / Geomechanics Symposium 2017
EditorsHaiyang Huang
Place of PublicationAlexandria VA USA
PublisherAmerican Rock Mechanics Association (ARMA)
Pages2983-2987
Number of pages5
ISBN (Electronic)9781510857582
Publication statusPublished - 1 Jan 2017
Externally publishedYes
EventUS Rock Mechanics / Geomechanics Symposium 2017 - San Francisco, United States of America
Duration: 25 Jun 201728 Jun 2017
Conference number: 51st
https://www.onepetro.org/conferences/ARMA/ARMA17

Conference

ConferenceUS Rock Mechanics / Geomechanics Symposium 2017
CountryUnited States of America
CitySan Francisco
Period25/06/1728/06/17
Internet address

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