Hdl Handle:
http://hdl.handle.net/10545/619125
Title:
Moisture effects on the bending fatigue of laminated composites
Authors:
Meng, Maozhou; Le, Huirong ( 0000-0002-6368-7466 ) ; Grove, Stephen; Jahir Rizvi, M.
Abstract:
This 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.
Affiliation:
Plymouth University; University of Derby
Citation:
Meng, M. et al (2016) 'Moisture effects on the bending fatigue of laminated composites', Composite Structures, Vol. 154, pp. 49-60.
Publisher:
Elsevier
Journal:
Composite Structures
Issue Date:
19-Jul-2016
URI:
http://hdl.handle.net/10545/619125
DOI:
10.1016/j.compstruct.2016.06.078
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0263822316310807
Type:
Article
Language:
en
ISSN:
2638223
Appears in Collections:
Department of Mechanical Engineering & the Built Environment

Full metadata record

DC FieldValue Language
dc.contributor.authorMeng, Maozhouen
dc.contributor.authorLe, Huirongen
dc.contributor.authorGrove, Stephenen
dc.contributor.authorJahir Rizvi, M.en
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.en
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
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