CHARACTERISATION OF EXPERIMENTAL LAMB WAVES PROPAGATION IN CFRP LAMINATES WITH THE METHOD OF WAVELET TRANSFORM

Lea A.C. Lecointre, Ryo Higuchi, Tomohiro Yokozeki, Shota Tonegawa, Masakatsu Mita, Naoki Hosoya, Shin Ichi Takeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The use of Ultrasonic guided waves such as Lamb Waves has been identified in the last decades as a promising Non-Destructive Testing (NDT) method for defects detection in composites. However, their propagation is complex, especially in Carbon Fiber Reinforced Plastics (CFRP) which are widely used for aerospace structures. Moreover, analyzing the Lamb Waves propagation requires to develop an efficient Signal Processing method to interpret the waves characteristics. In this study, a Signal Processing method using the Wavelet Transform allows to analyze several features of the propagated Lamb Wave: the amplitude, the frequency and the propagation velocity. This study also investigates how these waves features are impacted by different sample parameters such as the thickness, the anisotropy or the presence of delamination.

Original languageEnglish
Title of host publicationCharacterization
EditorsAnastasios P. Vassilopoulos, Veronique Michaud
PublisherComposite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages560-567
Number of pages8
ISBN (Electronic)9782970161400
Publication statusPublished - 2022
Event20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland
Duration: 2022 Jun 262022 Jun 30

Publication series

NameECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Volume3

Conference

Conference20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022
Country/TerritorySwitzerland
CityLausanne
Period22/6/2622/6/30

Keywords

  • Lamb Waves
  • Non-Destructive Testing
  • Ultrasonic Testing
  • Wave propagation

ASJC Scopus subject areas

  • Ceramics and Composites

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