The hybridization effect and damage sequence investigation of biaxial/unidirectional braided composite tubes by micro-CT method

Shi, Lin; Wu, Zhenyu; Cheng, Xiaoying; Pan, Zhongxiang; Yuan, Yiping

doi:10.1177/15280837221121935

Cited by 3 publications

(4 citation statements)

References 71 publications

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“…The fiber volume fraction of carbon fiber/epoxy composites was measured by a burn‐off test approach 22 . By burning off all the matrix through the approach in a muffle furnace at 650°C, the fiber volume fraction can be determined 23 . The measured fiber volume fraction was displayed in Table 1.…”

Section: Methodsmentioning

confidence: 99%

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The tension–tension fatigue behavior of carbon fiber/epoxy woven composites with stable structural reinforcements

Man

et al. 2023

Fatigue Fract Eng Mat Struct

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Carbon fiber/epoxy woven composites with stable structural reinforcements exhibit a better static mechanical property than composites with unstable reinforcements. The stable structural reinforcements show a limited deformation during the curing process. To investigate the influence of reinforcements on the tension–tension fatigue properties of composites, three typical composite samples were manufactured and experiment research was developed. The results show that the composites with stable structural reinforcements prove excellent fatigue behavior, and the initial elastic modulus can be enhanced. The curvature of load‐bearing yarns affected the loading capacity, and the low curvature improve the structural integrity. The unstable structural reinforcements lead to the “fatigue strengthening” after a limited number of cycles, owing to the straightening of load‐bearing yarns. Reducing the curvature of yarns can effectively decrease the occurrence of initial cracks by altering the structural characteristics of reinforcements, which strengthens the bonding to improve fatigue resistance.

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Section: Methodsmentioning

confidence: 99%

“…22 By burning off all the matrix through the approach in a muffle furnace at 650 C, the fiber volume fraction can be determined. 23 The measured fiber volume fraction was displayed in Table 1.…”

Section: Materials 21 | Structural Characteristics Of Reinforcementsmentioning

confidence: 99%

The tension–tension fatigue behavior of carbon fiber/epoxy woven composites with stable structural reinforcements

Man

et al. 2023

Fatigue Fract Eng Mat Struct

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“…Research has also shown that the braiding angle in braided composite cylinders has a considerable influence on the fracture behavior and failure modes created under different loadings. [21][22][23][24] Gu et al 3 investigated the torsion progressive damage and failure mechanism of two-dimensional (2D) braided carbon/epoxy composite cylinders with four braiding angles including; 30 , 45 , 55 , and 60 . They used three-dimensional digital image correlation to monitor the crack propagation and progressive torsional strain.…”

Section: Introductionmentioning

confidence: 99%

“…They used common strain gauges to carry out strain measurements without any discussion on strain distribution over the braid. Research has also shown that the braiding angle in braided composite cylinders has a considerable influence on the fracture behavior and failure modes created under different loadings 21–24 . Gu et al 3 investigated the torsion progressive damage and failure mechanism of two‐dimensional (2D) braided carbon/epoxy composite cylinders with four braiding angles including; 30°, 45°, 55°, and 60°.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the effect of fiber path curvature on the fracture behavior of braided composite cylinders; experimental study

Mojarrad,

Dabiryan,

Gharehaghaji

et al. 2023

Polymer Composites

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Different failure modes occur in textile‐reinforced composite under applied loads. Fracture mechanism of braided composites are closely related to the geometry of braids. In the present study, fracture mechanism of glass/epoxy braided composite cylinders is investigated under tensile loads. For this purpose, glass/epoxy braided composites were fabricated using braids with braiding angles of 30°, 45°, and 57° to find the role of fiber path on the fracture mechanism. To determine the fiber path, helixes on the cylinders with aforementioned angles was considered and analyzed. New fixtures (jaws) were designed and manufactured for tensile testing of cylindrical composites. Tensile tests were carried out on the prepared samples to evaluate the failure modes of composites. The SEM micrographs of samples are provided after tensile test. Various failure modes were observed regarding the angle of the braid. Fiber breakage, matrix fracture, and debonding are the dominant modes that occur in braided composites proportional to the angle of braids. Fiber breakage is the dominant mode in the 30° angle braid reinforced composite, while the dominant failure mode in the 57° angle braid reinforced composite is matrix fracture. In composites with a braid angle of 45°, a combination of fracture modes occurred. In addition, energy absorption as well as specific energy absorption (SEA) of braided composite cylinders were also investigated and obtained from load–displacement curves. The results showed that the reinforced composite with a braid angle of 30° absorbs the lowest amount of energy (21.5 J) and also the lowest amount of specific energy (5375 J/kg). The maximum absorbed energy (67.7 J) and the maximum SEA (9675 J/kg) were observed in the reinforced composite with a braid angle of 45°.Highlights Fiber breakage is the dominant mode at the 30° angle braid reinforced composite. The dominant failure mode at the 57° angle braid reinforced composite is matrix fracture. In composites with the braid angle of 45°, a combination of fracture modes occurred. The composite reinforced with a braid angle of 30° absorbs the lowest amount of energy (21.5 J) and also the lowest amount of specific energy (5375 J/kg). The maximum absorbed energy (67.7 J) and the maximum SEA (9675 J/kg) were observed in the reinforced composite with a braid angle of 45°.

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Low‐velocity impact response and damage tolerance of hybrid biaxial/triaxial braided composite laminates

Wang

Shi

et al. 2023

Polymer Composites

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The structural properties of braided composite laminates are significantly affected by the low‐velocity impact (LVI). In this paper, the impact resistance and damage tolerance of triaxial braid structure laminates at different positions were mainly studied. Three hybrid biaxial (B)/triaxial (T) braided composite structures of BBTT, BTTB, and TTBB were designed, and LVI test and post‐impact compression tests were carried out. The results show that the triaxial braided fabric with quasi‐isotropic on the impact side caused more significant matrix cracks along the axis yarn direction, and the matrix damage area and delamination area were larger. For triaxial braided ply with high curl levels, severe fiber fracture and relatively concentrated damage occurred first on the non‐impact side. Interestingly, triaxial braided fabrics exhibited better impact resistance in terms of mechanical response when distributed across the specimen surface. However, a global damage pattern appears at high energy levels, which seriously reduced the residual strength of the structure and showed the worst damage tolerance. The damage quantification analysis of cracks, dent depths, delamination and residual compressive strength caused by the LVI of hybrid shaft number braided laminates was carried out in this work, which provided a valuable reference for engineering failure analysis and rational structure optimization of composite laminates.

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The hybridization effect and damage sequence investigation of biaxial/unidirectional braided composite tubes by micro-CT method

Cited by 3 publications

References 71 publications

The tension–tension fatigue behavior of carbon fiber/epoxy woven composites with stable structural reinforcements

The tension–tension fatigue behavior of carbon fiber/epoxy woven composites with stable structural reinforcements

Analyzing the effect of fiber path curvature on the fracture behavior of braided composite cylinders; experimental study

Low‐velocity impact response and damage tolerance of hybrid biaxial/triaxial braided composite laminates

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