Internal-Notched Flexure Test for Measurement of Mode II Delamination Resistance of Fibre-Reinforced Polymers | Zendy

Chengye Fan | Zendy; P.Y. Ben Jar | Zendy; Jianwei Cheng | Zendy

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Internal-Notched Flexure Test for Measurement of Mode II Delamination Resistance of Fibre-Reinforced Polymers

Author(s) -

Chengye Fan,

P.Y. Ben Jar,

Jianwei Cheng

Publication year - 2013

Publication title -

journal of composites

Language(s) - English

Resource type - Journals

eISSN - 2356-7252

pISSN - 2314-5978

DOI - 10.1155/2013/695862

Subject(s) - materials science , composite material , delamination (geology) , strain energy release rate , fracture toughness , test method , repeatability , toughness , fiber pull out , bridging (networking) , structural engineering , composite laminates , composite number , paleontology , computer network , chemistry , tectonics , chromatography , computer science , subduction , biology , engineering

This paper introduces a new test, method, named internal-notched flexure (INF) test, that is designed to measure the critical energy release rate of fibre-reinforced polymers for delamination growth in shear mode (mode II). The INF test generates stable delamination growth, with a monotonic increase of load and displacement in a nearly linear fashion. Values of the mode II delamination toughness were deduced using experimental compliance fitting method. Good repeatability of the results was obtained. Compared with the end-notched flexure (ENF) test using the same material, the INF test yielded higher delamination resistance, possibly due to the bridging fibres found between fracture surfaces of the INF test specimens

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