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Detecting and locating damage initiation and progression in full-scale sandwich composite fuselage panels using acoustic emission

In this study, acoustic emission was evaluated as a supplementary nondestructive testing method for detecting damage initiation and progression, identifying the site of damage, and anticipating ultimate fracture in notched full-scale honeycomb sandwich composite fuselage panels using redundant array...

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Bibliographic Details
Published in:Journal of composite materials 2013-06, Vol.47 (13), p.1643-1664
Main Authors: Leone, Frank A, Ozevin, Didem, Awerbuch, Jonathan, Tan, Tein-Min
Format: Article
Language:English
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Summary:In this study, acoustic emission was evaluated as a supplementary nondestructive testing method for detecting damage initiation and progression, identifying the site of damage, and anticipating ultimate fracture in notched full-scale honeycomb sandwich composite fuselage panels using redundant arrays of different acoustic emission sensor models. Each panel contained different damage scenarios and was subjected to combinations of quasi-static hoop and longitudinal loads. Damage progression and location were characterized with various inspection techniques, and the acoustic emission results were correlated with photogrammetric strain fields. Applying post-test signal processing, acoustic emission accurately detected notch tip damage initiation and tracked its progression to ultimate failure.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998312450306