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Experimental, analytical and numerical study of mechanical properties and fracture energy for composite sandwich beams

Experimental, analytical and numerical study of mechanical properties and fracture energy for composite sandwich beams

Toygar, M. Evren, Tee, Kong Fah, Maleki, Farshid Khosravi and Balaban, A. Cagla (2017) Experimental, analytical and numerical study of mechanical properties and fracture energy for composite sandwich beams. Journal of Sandwich Structures and Materials. ISSN 1099-6362 (Print), 1530-7972 (Online) (In Press) (doi:10.1177/1099636217710003)

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Abstract

In this study, the mechanical and fracture behaviour of marine sandwich-structured composite that is manufactured by vacuum-assisted resin infusion process with a PVC foam-web core, and different thicknesses of upper and lower glass fibre-reinforced polymer face sheets used as outer and inner side of the hull have been examined. The properties of PVC core, face sheet material, and composite sandwich structures are presented. Failure modes include sandwich flatwise tension, core flatwise compression, sandwich edgewise compression, and face sheet bending of manufactured composites have been investigated experimentally for marine application. The analytical solution is derived to calculate the flexural rigidity, shear stresses and maximum tensile, compression stresses in three-point bending specimens for marine sandwich composites. 3 End Notched Flexure test method has been applied to calculate the strain energy release rate. Moreover, the finite element study is carried out by using a 2D model to calculate the fracture energy (J) value numerically and virtual crack closure technique. Reasonably good results are obtained between analytical and numerical methods.

Item Type: Article
Uncontrolled Keywords: Sandwich-structured Composite, Strain Energy Release Rate, End Notched Flexure Test, Fracture Energy, Virtual Crack Closure Technique, J integral
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 11 Apr 2018 17:00
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: GREAT e
URI: http://gala.gre.ac.uk/id/eprint/17826

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