Calculus of the defect severity with EMATs by analysing the attenuation curves of the guided waves

Carlos Quiterio Gómez Muñoz, Fausto Pedro García Márquez, Alfredo Arcos, Liang Cheng, Maria Kogia, Mayorkinos Papaelias

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The aim of this paper is to develop a novel method to determine the severity of a damage in a thin plate. This paper presents a novel fault detection and diagnosis approach employing a new electromagnetic acoustic transducer, called EMAT, together with a complex signal processing method. The method consists in the recognition of a fault that exists within the structure, the fault location, i.e. the identification of the geometric position of damage, and the determining the significance of the damage, which indicates the importance or severity of the defect. The main scientific novelties presented in this paper is: to develop of a new type of electromagnetic acoustic transducer; to incorporate wavelet transforms for signal representation enhancements; to investigate multi-parametric analysis for noise identification and defect classification; to study attenuation curves properties for defect localization improvement; flaw sizing and location algorithm development.
Original languageEnglish
Pages (from-to)195-202
JournalSmart Structures and Systems
Issue number2
Publication statusPublished - 1 Feb 2017


  • fault detection and diagnosis
  • Electromagnetic sensor
  • EMAT
  • Wavelets transforms
  • non destructive tests


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