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Self-healing of delamination cracks in mendable epoxy matrix laminates using poly[ethylene-co-(methacrylic acid)] thermoplastic
journal contribution
posted on 2012-08-01, 00:00 authored by K Pingkarawat, C H Wang, Russell VarleyRussell Varley, A P MouritzThis paper investigates the self-healing repair of delamination cracks in a carbon fibre–epoxy laminate using the mendable thermoplastic poly[ethylene-co-(methacrylic acid)] (EMAA). The effects of different types (fibres or particles) and concentrations of the mendable EMAA agent on the self-healing efficiency was measured using mode I interlaminar fracture toughness testing and fractographic analysis. The
EMAA was effective in healing delamination damage and increasing the fracture toughness compared to the original laminate. High healing efficiency was achieved by the wide area flow of EMAA (increase
of ~25 times) through delamination cracks under the pressure delivery mechanism. High recovery in the fracture toughness was achieved after healing by the formation of large-scale EMAA-bridging ligaments
along the delamination, which is a toughening mechanism unique to this type of self-healing material. EMAA proved effective for the multiple repairs of delamination cracks with some loss in the self-healing efficiency of the mendable laminates.
EMAA was effective in healing delamination damage and increasing the fracture toughness compared to the original laminate. High healing efficiency was achieved by the wide area flow of EMAA (increase
of ~25 times) through delamination cracks under the pressure delivery mechanism. High recovery in the fracture toughness was achieved after healing by the formation of large-scale EMAA-bridging ligaments
along the delamination, which is a toughening mechanism unique to this type of self-healing material. EMAA proved effective for the multiple repairs of delamination cracks with some loss in the self-healing efficiency of the mendable laminates.
History
Journal
Composites Part A: Applied Science and ManufacturingVolume
43Issue
8Pagination
1301 - 1307Publisher
Pergamon PressLocation
United KingdomPublisher DOI
ISSN
1359-835XLanguage
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2012 ElsevierUsage metrics
Categories
Keywords
Polymer–matrix composites (PMCs)DelaminationFracture toughnessSelf-healingScience & TechnologyTechnologyEngineering, ManufacturingMaterials Science, CompositesEngineeringMaterials SciencePolymer matrix composites (PMCs)FIBER-REINFORCED POLYMERMICROVASCULAR NETWORKSCOMPOSITE STRUCTURESDAMAGEIMPACTFILMSAerospace EngineeringMechanical Engineering
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