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Rock Mechanics and Rock Engineering

, Volume 52, Issue 8, pp 2551–2568 | Cite as

Determination of Tensile Elastic Parameters from Brazilian Tensile Test: Theory and Experiments

  • Hui LiEmail author
  • Bitao Lai
  • Huihai Liu
Original Paper
  • 342 Downloads

Abstract

Elastic properties of rocks, including Young’s modulus and Poisson’s ratio, are usually obtained from the uniaxial compressive strength (UCS) test, while tensile strength is obtained from direct or indirect (Brazilian) tensile test. In this paper, we developed an analytical model as well as an improved test procedure, called modified Brazilian tensile (MBT) test, which can simultaneously measure the tensile strength, Young’s modulus and Poisson’s ratio in a single test by attaching two strain gauges at the center of each end face of the specimen. To validate the proposed model, both the UCS and modified Brazilian tensile tests were conducted using two types of aluminum alloy (AL 6061 and AL 7075). Results showed that the Young’s modulus obtained from UCS tests and MBT tests are within the range of experimental error. Poisson’s ratios determined from the two test methods were consistent. The proposed model was further validated with Colton sandstones. The Young’s modulus and the Poisson’s ratio obtained from the UCS test and the MBT test agreed well. We also conducted numerical modeling for further comparison, and the results also verified the reasonableness of the proposed model.

Keywords

Analytical model Modified Brazilian tensile test Rock elastic properties Young’s modulus Poisson’s ratio 

Notes

Acknowledgements

This research was supported by Science Foundation of China University of Petroleum, Beijing (no. 2462017YJRC041 and no. 2462016YJRC033), by the China State Key Laboratory of Petroleum Resources and Prospecting Foundation (no. PRP/indep-04-1608, no. PRP/indep-2-1704 and no. PRP/indep-4-1703), by the Innovation Fund of China National Petroleum Corporation (no. 2017D-5007-0308), and by the National Science and Technology Major Project of China, founding nos. 2016ZX05051 and 2017ZX05030. The authors appreciate Ben Li, Yanhui Han, Zhixing Wang and Xin Zhao for the technical insights and grammar check on this paper. The authors are grateful to Aramco Services Company for permission to publish this work.

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Petroleum Resources and ProspectingBeijingChina
  2. 2.China University of PetroleumBeijingChina
  3. 3.Aramco Services Company: Aramco Research CenterHoustonUSA

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