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dc.contributor.authorMeng, Maozhou
dc.contributor.authorLe, Huirong
dc.contributor.authorGrove, Stephen
dc.contributor.authorJahir Rizvi, M.
dc.date.accessioned2016-08-31T13:01:11Z
dc.date.available2016-08-31T13:01:11Z
dc.date.issued2016-07-19
dc.identifier.citationMeng, M. et al (2016) 'Moisture effects on the bending fatigue of laminated composites', Composite Structures, Vol. 154, pp. 49-60.en
dc.identifier.issn2638223
dc.identifier.doi10.1016/j.compstruct.2016.06.078
dc.identifier.urihttp://hdl.handle.net/10545/619125
dc.description.abstractThis paper investigated the effect of moisture ingress on the bending fatigue of laminated composites. An accelerated testing method was developed to investigate the correlation between composite fatigue and moisture diffusion effects. Unidirectional and cross-ply laminated CFRP composites were manufactured in autoclave, and then submerged in both fresh and seawater for various periods until moisture saturation. Quasi-static and cyclic tests were carried out in both air and wet environment, and the failure mechanisms were investigated using visual and microscopic methods. Additionally, a robust 2D Finite Element model (FEA) was developed to simulate the fatigue crack propagation based on Virtual Crack Closure Technique (VCCT), while a 3D FEA model was developed to investigate the edge effect on fatigue crack propagation. The experimental observations gave a good agreement with the FEA models. The study showed that the bending fatigue failure was due to the so-called buckling-driven delamination, and the fatigue life was reduced significantly owing to the combination of edge effect and capillary effect. The fatigue test indicated that the fatigue resistance was degraded one stress level due to the water ingress. Therefore, a 4-step fatigue failure theory was proposed to explain the moisture effects on the crack propagation under bending fatigue.
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0263822316310807en
dc.rightsArchived with thanks to Composite Structuresen
dc.subjectMaterials engineeringen
dc.subjectLaminated Compositesen
dc.subjectFatigueen
dc.subjectFEAen
dc.titleMoisture effects on the bending fatigue of laminated compositesen
dc.typeArticleen
dc.contributor.departmentPlymouth Universityen
dc.contributor.departmentUniversity of Derbyen
dc.identifier.journalComposite Structuresen
dc.internal.reviewer-noteAccept on condition that there is an embargo on full text as accepted manuscript has been uploaded. Sherpa gives embargo period of between 12 and 48 months on accepted/post print. How do I know how long embargo shoukd be? EBen
dcterms.dateAccepted2016-06-30
refterms.dateFOA2018-07-31T00:00:00Z
html.description.abstractThis paper investigated the effect of moisture ingress on the bending fatigue of laminated composites. An accelerated testing method was developed to investigate the correlation between composite fatigue and moisture diffusion effects. Unidirectional and cross-ply laminated CFRP composites were manufactured in autoclave, and then submerged in both fresh and seawater for various periods until moisture saturation. Quasi-static and cyclic tests were carried out in both air and wet environment, and the failure mechanisms were investigated using visual and microscopic methods. Additionally, a robust 2D Finite Element model (FEA) was developed to simulate the fatigue crack propagation based on Virtual Crack Closure Technique (VCCT), while a 3D FEA model was developed to investigate the edge effect on fatigue crack propagation. The experimental observations gave a good agreement with the FEA models. The study showed that the bending fatigue failure was due to the so-called buckling-driven delamination, and the fatigue life was reduced significantly owing to the combination of edge effect and capillary effect. The fatigue test indicated that the fatigue resistance was degraded one stress level due to the water ingress. Therefore, a 4-step fatigue failure theory was proposed to explain the moisture effects on the crack propagation under bending fatigue.


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