An experimental study on the failure and enhancement mechanism of bolt-strengthening GFRP T-joint subjected to tensile loading

You, Peiyu; Chen, Chen; Wu, Ye; Zhang, Baohua; Tang, Xiaojun; Zhu, Danshi; Liu, Zhenxue; Ma, Yunsheng

doi:10.1515/secm-2022-0169

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…Barzegar et al 20 presented a parametric study, including adhesives, fiber volume fractions, and geometrical properties of composite adherends, of the reinforced composite T‐joints and their failure behaviors under bending loading. You et al 21 investigated the failure and enhancement mechanism of bolt‐strengthening glass fiber reinforced polymer (GFRP) T‐joints under quasi‐static tension. Wan et al 22 made a sensor based on electric resistance, which is fabricated by woven glass fiber coated with multi‐walled carbon nanotube to monitor the mechanical behavior of composite T‐joints under tensile loading.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulative investigation on the mechanical behavior of GFRP T‐joints subjected to low‐velocity‐impact and post‐impact tensile loading

Jin,

Zhang,

et al. 2023

Polymer Composites

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To investigate the failure mechanism of the composite T‐joints subjected to low‐velocity‐impact (LVI) loading varying impact locations, a methodology composed of improved conventional vacuum‐assisted resin infusion (VARI) and LVI testing based on ASTM D 7136 is developed and employed. Moreover, the simulation is conducted to mainly reveal the damage evolution of interlaminar delamination between web and web/skin laminate based on surface‐based cohesive behavior in the commercial software of Abaqus 2020. Further, the effect of LVI loading with various distances from the web laminate to the impact location on the mechanical property and failure mode of the composite T‐joints are presented and discussed as well. By comparison, larger vertical cracks and higher residual tensile strength are found in the T‐joints impacting the corner. However, the T‐joints with the impact point near the corner have lower residual tensile strength and suffer more interlaminar delamination in the interface between web and skin, which is the most critical position of failure.Highlights GFRP T‐joints are manufactured by the vacuum‐assisted resin infusion process with a newly designed mold. The damage evolution in low‐velocity‐impact tests is presented via the quasi‐static tests and finite element simulation. Larger vertical cracks and higher residual tensile strength are found in the T‐joints impacting the corner. The T‐joints with the impact point near the corner have lower residual tensile strength. Interlaminar delamination in the interface between web and skin is the most critical factor of tensile failure.

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Section: Introductionmentioning

confidence: 99%

Experimental and simulative investigation on the mechanical behavior of GFRP T‐joints subjected to low‐velocity‐impact and post‐impact tensile loading

Jin,

Zhang,

et al. 2023

Polymer Composites

Self Cite

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Experimental evaluation on compression-after-impact behavior of perforated sandwich panel comprised of foam core and glass fiber reinforced epoxy hybrid facesheets

Tu,

Li,

Huang

et al. 2024

E-Polymers

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To study the impact response and compression-after-impact (CAI) behavior of perforated sandwich panels comprised of foam core and glass fiber-reinforced epoxy hybrid facesheets, the hole diameter of specimens is changed in the fabrication via vacuum-assisted resin infusion. Furthermore, low-velocity-impact tests with various impact distances between the impact point and hole are carried out. With the help of the digital image correlation technique, CAI testing is conducted, and the strain evolution of specimens is monitored carefully. The mechanical response history, damage morphology, and compressive process are discussed in detail. The results show that the impact and CAI performance of specimens are weakened because of open holes. Compared with the non-perforated specimen, the maximum force of the specimen with a 6-mm hole and the 5-mm impact distance decreases by 41.21%, and its maximum displacement increases by 38.60%. During the CAI process, in comparison with the impact damage, more significant stress concentration and buckling around the hole are found.

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Experimental study on impact and flexural behaviors of CFRP/aluminum-honeycomb sandwich panel

Zhao,

Gao,

Lou

et al. 2024

E-Polymers

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To investigate the impact and flexure behavior of carbon fiber reinforced polymers/aluminum-honeycomb sandwich panel, low-velocity impact, compression-after-impact (CAI), and three-point flexure tests are conducted carefully. Four kinds of carbon fiber prepregs are selected to make face sheets by hot press preparation. Further, the digital image correlation technique is employed to record the damage evolution under the compression and flexure loads. The results show that the sandwich structure has two stages of impact response, first, the brittle behavior of the upper panel, and then the resistance of both sandwich and lower panel to absorb energy. In the CAI test, the failure position shifts from the ends to the impact cross section, and the compressive strength can be reduced by 40% only by 1 J impact. The strength of in-plane flexure is at least twice greater than that of out-of-plane flexure. The damage and deformation of in-plane flexure are found mainly in the upper panel and sandwich core, and the lower panel bends significantly.

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An experimental study on the failure and enhancement mechanism of bolt-strengthening GFRP T-joint subjected to tensile loading

Cited by 3 publications

References 30 publications

Experimental and simulative investigation on the mechanical behavior of GFRP T‐joints subjected to low‐velocity‐impact and post‐impact tensile loading

Experimental and simulative investigation on the mechanical behavior of GFRP T‐joints subjected to low‐velocity‐impact and post‐impact tensile loading

Experimental evaluation on compression-after-impact behavior of perforated sandwich panel comprised of foam core and glass fiber reinforced epoxy hybrid facesheets

Experimental study on impact and flexural behaviors of CFRP/aluminum-honeycomb sandwich panel

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