The effect of transverse compressive stresses on tensile failure of carbon fibre/epoxy composites

Rev, Tamas; Wisnom, Michael R; Xu, Xiaodong; Czél, Gergely

doi:10.1016/j.compositesa.2022.106894

Cited by 10 publications

(2 citation statements)

References 36 publications

(41 reference statements)

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“…The specimen used was dumbbell-shaped, but the two surfaces on both sides subjected to transverse compressive loading were simple planes. Rev et al [ 33 ] proposed a thin-ply specimen composed of angle-ply and unidirectional CFRP, where an in-plane biaxial stress state of longitudinal tension and transverse compression is induced in the central 0° layers by the scissoring deformation of the angle-plies. The mechanism of transverse compressive loading differs from that of Goto et al, but the specimen also has a long strip shape in the 0° direction.…”

Section: Introductionmentioning

confidence: 99%

“…Goto et al [32] investigated th strength of a unidirectional CFRP laminate in the 0° direction subjected to com loading in the 90° direction. The specimen used was dumbbell-shaped, but the faces on both sides subjected to transverse compressive loading were simple pla et al [33] proposed a thin-ply specimen composed of angle-ply and unidirectiona where an in-plane biaxial stress state of longitudinal tension and transverse com is induced in the central 0° layers by the scissoring deformation of the angle-p mechanism of transverse compressive loading differs from that of Goto et al, but t imen also has a long strip shape in the 0° direction. Potter et al [34] and Kang e conducted a biaxial compression test on CFRP laminates.…”

Section: Introductionmentioning

confidence: 99%

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Fracture Behavior of a Unidirectional Carbon Fiber-Reinforced Plastic under Biaxial Tensile Loads

Sanai,

Nakasaki,

Hashimoto

et al. 2024

Materials

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In order to clarify the fracture behavior of a unidirectional CFRP under proportional loading along the fiber (0°) and fiber vertical (90°) directions, a biaxial tensile test was carried out using a cruciform specimen with two symmetric flat indentations in the thickness direction. Three fracture modes were observed in the specimens after the test. The first mode was a transverse crack (TC), and the second was fiber breakage (FB). The third mode was a mixture mode of TC and FB (TC&FB). According to the measured fracture strains, regardless of the magnitude of the normal strain in the 0° direction, TC and TC&FB modes occurred when the normal strain in the 90° direction, εy, ranged from 0.08% to 1.26% (positive values), and the FB mode occurred when εy ranged from −0.19% to −0.79% (negative values). The TC&FB mode is a unique mode that does not appear as a failure mode under uniaxial tension; it only occurs under biaxial tensile loading. Biaxial tensile tests were also conducted under non-proportional loading. The result showed three fracture modes similarly to the proportional loading case, each of which was also determined by the positive or negative value of εy. Thus, this study reveals that the occurrence of each fracture mode in a unidirectional CFRP is characterized by only one parameter, namely εy.

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Section: Introductionmentioning

confidence: 99%