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Use of acoustic emission to dicriminate damage modes in composite-antenna-structure during buckling loading

Abstract : This paper investigates failure modes in composite-antenna-structures by using Acoustic Emission (EA) with a multivariable parameter: wave form, FFT diagram, peak power, frequency centroid, absolute energy, average frequency, peak frequency, duration and amplitude. Tensile and buckling test were preformed to investigate damage accumulation in composite laminate, while ARCAN-MINES test was used to characterize the delamination modes in adhesive joints. Multivariable method enabled the identification and the classification of AE signals belonging to fibre breakage, fiber/matrix debonding, matrix cracking and delamination during tensile and buckling loading. Peak frequency is able to classify damage modes occurring from the composite part and from the adhesive joint. ARCAN-MINES test shows that a similar signal was observed for all modes of delamination. Finally, the validation of AE clustering has been made on circular holed composite antenna plates under buckling loading. Damage mode and location of AE clustering show a good correlation with experimental results.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01109545
Contributor : Bibliothèque Umr7633 <>
Submitted on : Monday, January 26, 2015 - 3:19:46 PM
Last modification on : Thursday, September 24, 2020 - 6:30:07 PM

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  • HAL Id : hal-01109545, version 1

Citation

Pongsak Nimdum, Jacques Renard. Use of acoustic emission to dicriminate damage modes in composite-antenna-structure during buckling loading. 15th International conference on experimental mechanics, Jul 2012, Porto, Portugal. 15 p., paper 2778. ⟨hal-01109545⟩

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