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Caractérisation de l'endommagement des composites à matrice polymère par une approche multi-technique non destructive

Abstract : This innovative study consists to implement in the same experimental procedure three non destructive techniques simultaneously: acoustic emission, infrared thermography and ultrasonic waves for the characterization of damage in cross ply Polymer Composite Materials (PCM) [0/90]S. Each technique has demonstrated its potential to reveal the damage that depends on its intrinsic characteristics. Acoustic emission has been used in its classical form and coupled with a data classification obtained by k-means and Kohonen map. Infrared thermography has been studied using both passive and active forms, ultrasonic methods have been used by exploiting amplitude and velocity of longitudinal and Lamb waves respectively. It has been shown that the adopted multi-technique approach is veryinteresting to obtain a full diagnostic of the health state of the material before and after uniaxial mechanical loading. The “complementarity” aspect between the three used techniques is showed more interesting that “redundancy” aspect. The data fusion theory was used to have a reliable, comprehensive and credible decision about the different damage mechanisms may appear in PCM material. This has been possible only for the two imaging techniques, ultrasonic C-scan and infrared thermography. All in all, the results show that these three techniques are potentially able to describe the damage state of the material, but they don’t quantify it with the same manner.
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https://hal-uphf.archives-ouvertes.fr/tel-03421291
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Submitted on : Tuesday, November 9, 2021 - 3:46:30 PM
Last modification on : Tuesday, November 23, 2021 - 9:45:20 AM

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  • HAL Id : tel-03421291, version 1

Citation

Walid Harizi. Caractérisation de l'endommagement des composites à matrice polymère par une approche multi-technique non destructive. Electronique. Université de Valenciennes et du Hainaut-Cambrésis, 2012. Français. ⟨NNT : 2012VALE0033⟩. ⟨tel-03421291⟩

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