Journal of Geology and Mining Research
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Article Number - 090854859124


Vol.8(1), pp. 1-12 , May 2016
DOI: 10.5897/JGMR2015.0243
ISSN: 2006-9766



Full Length Research Paper

Numerical and experimental studies on the effect of loading angle on the validity of flattened Brazilian disc test



Pourya Khavari*
  • Pourya Khavari*
  • Mining Exploitation Engineering, School of Mining Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.
  • Google Scholar
Mehrnoosh Heidari
  • Mehrnoosh Heidari
  • Rock Mechanics Engineering, School of Mining Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.
  • Google Scholar







 Received: 26 December 2015  Accepted: 24 May 2016  Published: 31 May 2016

Copyright © 2016 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


In this study, effect of loading angle on location of crack initiation in flattened Brazilian disc (FBD) specimens was studied by both numerical and experimental methods. FBD tests were conducted on disc samples with various loading angles and tests were simulated by finite element method (FEM). The results showed that probability of crack initiation at flattened ends of samples where jaws and sample are connected should be considered along with central crack initiation which is a usual prerequisite to have a valid FBD test. In addition, experimental analysis was performed on FBD samples which is rarely observed in literature. Moreover, the loading angle of 30° was determined as an appropriate angle for FBD test that guarantees the occurrence of central crack and avoids crack initiation at flattened ends of samples.

Key words: Fracture toughness, FBD method, loading angle, central crack, experimental method, numerical method.

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APA Khavari, P., & Heidari, M. (2016). Numerical and experimental studies on the effect of loading angle on the validity of flattened Brazilian disc test. Journal of Geology and Mining Research, 8(1), 1-12.
Chicago Pourya Khavari and Mehrnoosh Heidari. "Numerical and experimental studies on the effect of loading angle on the validity of flattened Brazilian disc test." Journal of Geology and Mining Research 8, no. 1 (2016): 1-12.
MLA Pourya Khavari and Mehrnoosh Heidari. "Numerical and experimental studies on the effect of loading angle on the validity of flattened Brazilian disc test." Journal of Geology and Mining Research 8.1 (2016): 1-12.
   
DOI 10.5897/JGMR2015.0243
URL http://academicjournals.org/journal/JGMR/article-abstract/090854859124

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