Temperature‐dependent interlaminar behavior of unidirectional composite laminates: Property determination and mechanism analysis

Cao, Junchao; Meng, Xianghao; Gu, Jingjing; Zhang, Chao

doi:10.1002/pc.26089

Cited by 11 publications

(9 citation statements)

References 44 publications

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“…ILFT is strongly affected by matrix properties [59,60] and fiber/matrix interfacial quality. Further, moisture, [61] temperature and loading speed [62][63][64][65][66][67][68] also have an influence. [27,69,70] The glass transition temperature (T g ) of the thermoset polymer matrices ideally used in FRP composites is a limiting factor that restricts their usage in high temperature environments.…”

Section: Introductionmentioning

confidence: 99%

Mode I and II interlaminar fracture toughness of glass/carbon inter‐ply hybrid FRP composites: Effects of stacking sequence and testing temperature

et al. 2023

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Even though laminated FRP composites show exceptional performance in various modes of loading, they are susceptible to delamination. The ambient temperature and elevated temperature delamination resistance of glass/carbon fiber interply hybrid composites were assessed via mode I and mode II interlaminar fracture toughness tests performed at 30, 50 and 70 C. Interply hybrid composites performed better than composites with single type of fiber. The fracture toughness of inter-ply hybrid composites varied with the stacking position. At 30 C, mode I fracture toughness value of alternative glass and carbon fiber stacking sequence (G 1 C 1 ) 5 of hybrid composite showed 40% improvement over 10 layered carbon/epoxy (C 10 ) composite. Further, Mode II fracture toughness of C 5 G 5 composite showed 22% enhancement, and C 10 exhibited 42% improvement over 10-layered glass/epoxy composite. Increasing the test temperature of all composites improved their G IC and G IIC values. The increment in the mode I fracture toughness properties of all composite was in the range of 5%-23% at 70 C from its room temperature value. The fractographic images of fractured samples were studied under a scanning electron microscope and failure mechanisms of composites were identified. K E Y W O R D Shigh temperature durability, inter-ply hybrid composite, mode I ILFT, mode II ILFT, stacking sequence of glass and carbon fibers

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Section: Introductionmentioning

confidence: 99%

Mode I and II interlaminar fracture toughness of glass/carbon inter‐ply hybrid FRP composites: Effects of stacking sequence and testing temperature

et al. 2023

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“…One of the topics of interest in past research is investigating the effect of temperature on composites' mode I fracture toughness. 37 In general, the increase in temperature affects the behavior of resin and composite, as well as the bond strength between fibers and resin. In previous studies, composites such as carbon/ epoxy, [38][39][40][41][42] epoxy/nanosilica, [43][44][45][46] and carbon/peek 47 have been investigated.…”

Section: Introductionmentioning

confidence: 99%

“…One of the topics of interest in past research is investigating the effect of temperature on composites' mode I fracture toughness 37 . In general, the increase in temperature affects the behavior of resin and composite, as well as the bond strength between fibers and resin.…”

Section: Introductionmentioning

confidence: 99%

Temperature effect on mode I fracture toughness of silica/glass/epoxy composites

Ardakani‐Movaghati,

Taheri‐Behrooz,

Esmaili

2023

Fatigue Fract Eng Mat Struct

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The mechanical properties of polymer matrix composites, such as fracture toughness, can be affected by the operating temperature. In this study, experimental and computational approaches were used to investigate the effect of temperature on the mode I fracture toughness of a glass/epoxy composite laminate filled with nanosilica particles. Double cantilever beam (DCB) tests were conducted at room temperature, 50°C and 65°C conditions on the glass/epoxy and 0.5 wt.% nanosilica/glass/epoxy composites. The addition of nanosilica to the glass/epoxy composites increased the initiation (Gini) and propagation (Gpro) fracture toughness by 7.3% and 39.5%, respectively, at room temperature. This was due to the enhanced bond strength of the fiber/matrix resulting from the addition of nanosilica. At a test temperature of 65°C, the initiation fracture toughness of the glass/epoxy and the glass/epoxy/ nanosilica increased by 22.4% and 22%, respectively, while the propagation fracture toughness increased by 64% and 28%, respectively. Numerical simulations using Abaqus software on two‐dimensional and three‐dimensional models confirmed the capability of cohesive zone models to simulate the load–displacement response of the specimens under different thermal conditions.

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“…[1,2] However, the susceptibility of composite laminates to delamination has limited their application due to their laminated structure. [3][4][5] The types of delamination crack are divided into mode I and mode II according to opening crack and sliding crack. Generally, under bending or out-of-plane shear stresses mode II delamination cracks are prone to be formed.…”

Section: Introductionmentioning

confidence: 99%

Mode II interlaminar fracture toughness enhancement of fine z‐pin reinforced carbon fiber composite with low fraction of pins

Che

Wang

et al. 2022

Polymer Composites

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This article aims to improve the shear delamination resistance of composite laminate and minimize implantation damage on fiber orientation by using fine z-pins.The z-pins with the diameters as small as 0.1 and 0.2 mm were prepared by using different carbon fibers. The results show that z-pinning method significantly improves the mode II interlaminar fracture toughness, and the G IIC value becomes larger with the decrease in z-pin diameter. Compared with the control sample, the precracked G IIC values of (carbon fiber-reinforced polymer composite) CFRP (0.5CF4XÀpin) , CFRP (0.2CF4XÀpin) , and CFRP (0.1CF4XÀpin) increase by 67%, 142%, and 176%, respectively. As z-pin diameter decreases from 0.5 to 0.1 mm, the failure mode changes from z-pin pullout to shear fracture. The evolution of failure mode greatly enhances the resistance to crack propagation and the final G IIC value. The carbon fiber type of pin (0.5mm) has no obvious influence on the delamination sliding resistance. For pin (0.1mm) and pin (0.2mm) , the strong deformation resistance of z-pin is the dominant factor driving the improvement of the G IIC values though providing high-shear traction load. In addition, the z-pins with large shear deformation capacity can also enhance the crack sliding resistance.

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Temperature‐dependent interlaminar behavior of unidirectional composite laminates: Property determination and mechanism analysis

Cited by 11 publications

References 44 publications

Mode I and II interlaminar fracture toughness of glass/carbon inter‐ply hybrid FRP composites: Effects of stacking sequence and testing temperature

Mode I and II interlaminar fracture toughness of glass/carbon inter‐ply hybrid FRP composites: Effects of stacking sequence and testing temperature

Temperature effect on mode I fracture toughness of silica/glass/epoxy composites

Mode II interlaminar fracture toughness enhancement of fine z‐pin reinforced carbon fiber composite with low fraction of pins

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