Damage tolerance related to the damage area of impacted carbon/epoxy composite laminates

This study aimed to analyze the damage tolerance of a carbon/epoxy composite laminate (AS4/8552) impacted at low velocity, relating residual strength values with the impact energy and delaminated area. AS4/8552 laminated plates [0°3/90°/±45°]S were submitted to low-velocity impact tests with three e...

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Bibliographic Details
Published in:Journal of composite materials 2023-08, Vol.57 (19), p.2985-2993
Main Authors: Targino, Talita Galvão, Dantas da Cunha, Rayane, Ribeiro, Gleicy de Lima Xavier, Paiva da Costa Ferreira, Evans, Freire Júnior, Raimundo Carlos Silverio, Daniel Diniz Melo, José
Format: Article
Language:English
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Summary:This study aimed to analyze the damage tolerance of a carbon/epoxy composite laminate (AS4/8552) impacted at low velocity, relating residual strength values with the impact energy and delaminated area. AS4/8552 laminated plates [0°3/90°/±45°]S were submitted to low-velocity impact tests with three energy levels: 30 J, 45 J and 74 J. Next, the test specimens were analyzed by X-ray computed tomography to check for cracks and delaminations, and compression after impact (CAI) tests conducted to assess their residual strength. The results indicate that above the minimum energy level of low-velocity impact to cause damage, the residual strength of the laminate may be related to the delaminated area.
ISSN:0021-9983
1530-793X
DOI:10.1177/00219983231181942