Experimental and numerical research of temperature on tensile properties of multiaxial warp‐knitted composites

Gao, Xiaoping; Yang, Xiaori; Li, Yonggui

doi:10.1002/pc.25752

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…As previously mentioned, the crack length a can be obtained for a known load P and an open displacement δ by using Equation (10). Thus, for a given load and the corresponding displacement, the crack length can be calculated using Equation (10). In addition, the crack length can also be measured from the crack propagation gage during the experiment.…”

Section: Calculation Of Crack Lengthmentioning

confidence: 99%

“…This obvious consideration points out that it is important to evaluate the delamination resistance of these materials not only in standard laboratory conditions but also under the conditions of more extreme environments. [9,10] Therefore, it is necessary to gain a comprehensive understanding of the interlaminar fracture toughness of the composite laminate when exposed to a broad range of temperatures. [11,12] Some studies have demonstrated how temperature influenced the delamination response of fiber-reinforced composite materials under different stress modes.…”

Section: Introductionmentioning

confidence: 99%

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

Cao

Meng

et al. 2021

Polymer Composites

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Delamination damage is a critical concern for composites-especially for aircraft structures-considering their complex service conditions, which include extreme temperatures and impact threats. This study considers the effect of temperature (À20 C to 110 C) on the mode-I interlaminar failure behavior for unidirectional carbon/epoxy composite laminates, through a series of experiments.A simple double compliances method (DCM) without the measurement of crack length was employed to determine mode I interlaminar fracture toughness, and the accuracy of DCM at different temperatures was validated by comparing the results obtained from DCM with those calculated using ASTM methods. The comparison indicates that fracture toughness values determined from DCM

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Section: Calculation Of Crack Lengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Cao

Meng

et al. 2021

Polymer Composites

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“…The optimum process parameters for different 3D woven structural matrix composites were determined, and the optimum conditions were 12% hardener, 140°C curing temperature, 900 s curing time and 12 bar moulding pressure. Gao et al 18 investigated the tensile conduct of multi-axial warp-knitted composites who analyzed the impact of temperature on tensile conduct and injury mechanisms. The tensile strength decreases with increasing temperature.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of flexible composites reinforced with high-performance glass fiber multi-axial warp-knitted fabrics

Li,

Zhao,

2023

Journal of Industrial Textiles

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This paper investigates the quasi-static mechanical properties and damage behavior of flexible composites prepared from high-performance glass fiber-based multi-axial warp knitted fabrics as reinforcement and high tenacity environmentally friendly thermoplastic polyurethane as a matrix. The composites were produced by attaching thermoplastic polyurethane (TPU) to the top and bottom of the fabric using a vulcanization machine, followed by hot-pressing for different temperatures and time settings. Moreover, the effects of different preparation processes on the tensile strength, static puncture resistance, and tear strength of flexible composites were investigated in this paper. The results indicated that both hot-pressing temperature and vulcanization time had a significant impact on the mechanical properties of the composites. With an optimum vulcanization temperature of 185°C and a vulcanization time of 10 min, the composite provides optimum tensile strength and puncture resistance. Tear strength is the worst and is related to the reinforcement’s organisational structure and the interfacial bond’s strength. The results of this study are of theoretical and practical significance for applying high-performance multi-axial warp-knitted flexible composites as raw materials in the construction field.

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Temperature effects on tensile and bending properties of carbon/Kevlar hybrid fiber sandwich composites

Chen,

Gao,

Chen

et al. 2024

Polymer Composites

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In this paper, the mechanical properties of carbon/Kevlar hybrid fiber‐reinforced resin composites at different temperatures were studied. The hybrid composites were prepared by Vacuum Assisted Resin Infusion (VARI). The sandwich structure of reinforcement consists of Kevlar plain weave fiber as a surface layer and carbon fiber plain weave fabric as a core layer, while the matrix consists of a curing agent and epoxy resin. The bending and tensile properties of the composite specimens were tested at different temperatures using the in situ testing method, separately. The fracture morphology was analyzed using scanning electron microscopy (SEM) to understand the damage mechanism of the material properties at the micro‐scales. The results show that the sandwich composite material shows a positive hybrid effect. The carbon fibers increases effectively the strength and rigidity of the sample, while Kevlar fiber improves the toughness and brittle damage mode. The mechanical properties of hybrid composite laminates are strongly dependent on temperature. The tensile and bending properties of carbon/Kevlar hybrid composites decreased when the temperature increased from −30°C to 40°C. The effect of temperature on the bending properties was more pronounced for the carbon/Kevlar hybrid composites. This study consists of damage analysis and variation analysis of the mechanical behavior of carbon/Kevlar composite specimens, which will lay the foundation to provide basic data for the application of carbon/Kevlar hybrid composites.Highlights Advantages of carbon/Kevlar hybrid sandwiched structure on tensile and bending properties. Comprehensive mechanical property testing in multiple composite environments. Based on the hybrid effect and temperature effect, the damage mechanism of the sample was analyzed.

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Experimental and numerical research of temperature on tensile properties of multiaxial warp‐knitted composites

Cited by 4 publications

References 22 publications

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

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

Mechanical properties of flexible composites reinforced with high-performance glass fiber multi-axial warp-knitted fabrics

Temperature effects on tensile and bending properties of carbon/Kevlar hybrid fiber sandwich composites

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