Volume 11, Issue 1 (6-2011)                   Modares Mechanical Engineering 2011, 11(1): 51-59 | Back to browse issues page

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Khamedi R, Sharifi A, Ebrahimnejad H. Using acoustic emission method for analysis of failure and fracture process of dual phase steels. Modares Mechanical Engineering. 2011; 11 (1) :51-59
URL: http://mme.modares.ac.ir/article-15-3990-en.html
1- Mechanical Engineering Group, Engineering Dep., University of Zanjan, Zanjan, Iran.
2- Khajeh Nasir Toosi University of Technology, Mechanical Engineering Department
Abstract:   (4816 Views)
In this paper a new approach about relation of Acoustic Emission(AE) method and mechanical properties of ferrite-martensite dual phase steels(DPS) has presented. The AE signals from a tensile test using a range of DPS with different volume fractions of martensite (VM)s, in the range of 12–65% VM, were obtained and their AE signals were investigated. In order to better study DPS internal behaviour, a function named “sentry function” was used. The amount of this function depends on the strain energy and acoustic emission energy. the Results show that AE monitoring and sentry function are efficient tools for detection of micromechanisms, consisting of Ferrite-Martensite interface decohesion and/or martensite phase fracture, identifying the correlation of failure mechanisms to microstructure in DPS.
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Received: 2010/09/13 | Accepted: 2011/06/9 | Published: 2011/06/18

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