Damage resistance and damage tolerance of hybrid carbon-glass laminates

The influence of impact energy and stacking sequence on the damage resistance and Compression After Impact (CAI) strength of Carbon and Glass Fibre Reinforced Plastic (CFRP and GFRP respectively) hybrid laminates is investigated. CAI tests demonstrate that, in comparison to fully CFRP laminates, hyb...

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Published inComposites. Part A, Applied science and manufacturing Vol. 76; pp. 224 - 232
Main Authors Rhead, Andrew T., Hua, Shi, Butler, Richard
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2015
Subjects
A. Hybrid
B. Damage tolerance
B. Impact behaviour
B. Strength
carbon
Carbon fiber reinforced plastics
composite materials
Damage
Damage tolerance
Delaminating
delamination
energy
Failure
Glass fiber reinforced plastics
Laminates
Stacking
B. Strength
B. Damage tolerance
B. Impact behaviour
A. Hybrid
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Summary:The influence of impact energy and stacking sequence on the damage resistance and Compression After Impact (CAI) strength of Carbon and Glass Fibre Reinforced Plastic (CFRP and GFRP respectively) hybrid laminates is investigated. CAI tests demonstrate that, in comparison to fully CFRP laminates, hybrid laminates show increases in structural efficiency of up to 51% for laminates subject to a 12J impact and 41% for those subject to an 18J impact. Laminates displaying the highest stresses at failure are those that exploit stacking sequences and GFRP content to prevent delaminations from forming close to the outer surface of the laminate during impact. This favourable damage morphology inhibits both sublaminate-buckling-driven delamination propagation and anti-symmetric laminate buckling failures.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2015.06.001