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Advances in Materials Science and Engineering
Volume 2014, Article ID 189423, 9 pages
Research Article

Estimating Young’s Modulus of Materials by a New Three-Point Bending Method

1School of Mechanics and Civil Engineering & Architecture, Northwestern Polytechnical University, Xi’an, Shaanxi 710129, China
2School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China

Received 10 January 2014; Revised 6 May 2014; Accepted 10 June 2014; Published 17 July 2014

Academic Editor: Tao Zhang

Copyright © 2014 Xiaohu Zeng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new test method based on the three-point bending test is put forward to measure Young’s modulus of materials. The simplified mechanical model is established to make theoretical derivation. This method has not only the advantages of simple specimen preparation and convenient loading device, but also higher precision than the traditional three-point bending method. The method is adopted to obtain Young’s modulus of the aluminum alloy 2024. The feasibility of the method has been demonstrated by comparisons with the corresponding results obtained from the finite element method and experiment method. And the influence of contact friction on the test accuracy is analyzed.