Electromagnetic Acoustic Transducer for Detection and Characterization of Hidden Cracks inside Stainless Steel Material

Authors

  • H. Boughedda L2EI Laboratory, Jijel University, BP 98 Ouled Aissa, Jijel 18000, Algeria
  • T. Hacib L2EI Laboratory, Jijel University, BP 98 Ouled Aissa, Jijel 18000, Algeria
  • Y. Le Bihan Group of Electrical Engineering — Paris (GeePs) CNRS - Univ. Paris-Saclay - CentraleSupelec - Sorbonne Univ, 11, rue Joliot Curie 91192 Gif sur Yvette Cedex, France
  • M. Chelabi L2EI Laboratory, Jijel University, BP 98 Ouled Aissa, Jijel 18000, Algeria
  • H. Acikgoz Material Science Engineering Department, KTO Karatay University, Konya, Turkey

Keywords:

Characterization of hidden cracks, FEM, NDE, Time-of-Flight, TLBO algorithm

Abstract

Industrial structure are exposed to microstructural changes caused by fatigue cracking, corrosion and thermal aging. Generally, a hidden crack is very dangerous because it is difficult to detect by Non- Destructive Evaluation (NDE) techniques. This paper presents a new approach to estimate the hidden cracks dimensions inside a stainless steel plate based on the EMAT signal. The received signal by EMAT is simulated using the Finite Element Method (FEM). Then, the identification of the hidden crack sizes is performed via the combination of two techniques; the first one is the Time-of-Flight (ToF) technique which was applied to estimate the crack height by the evaluation of the difference between the ToF of the healthy form and the defective form. Then, the crack width is estimated by the solution of the inverse problem from the received signal based on a meta-heuristic algorithm called Teaching learning Based optimization (TLBO). The obtained results illustrate the sensitivity of the EMAT sensor to the variation of the crack sizes. Moreover, the quantitative evaluation of the cracks dimensions, show clearly the efficiency and reliability of the adopted approache.

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Published

2021-10-21

How to Cite

Boughedda, H. ., Hacib, T. ., Bihan, Y. L. ., Chelabi, M. ., & Acikgoz, H. . (2021). Electromagnetic Acoustic Transducer for Detection and Characterization of Hidden Cracks inside Stainless Steel Material. The Applied Computational Electromagnetics Society Journal (ACES), 36(08), 1083–1089. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/11815

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