Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

Chouhan, Hemant; Bhalla, Neelanchali Asija; Bandaru, Aswani Kumar; Bhatnagar, Naresh

doi:10.1002/pc.25818

Cited by 5 publications

(4 citation statements)

References 42 publications

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“…Several factors that affect absorption are contact time, temperature, fiber volume fraction, packing and arrangement, and crosslink density for the thermoset matrices. The absorption of fluids, including fuels and water, by the composites can deteriorate their mechanical properties, including moduli, strengths, and interlaminar fracture toughness 11–41 …”

Section: Introductionmentioning

confidence: 99%

Effects of cyclic absorption–desorption of model fuels by aerospace‐grade carbon/epoxy composites

et al. 2023

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The aviation industry is in the process of using several alternative fuels sourced from renewable sources to decrease its impact on the environment. These alternative fuels are mostly comprised of aliphatic hydrocarbons and have low to no aromatic content. The Federal Aviation Administration (FAA) has approved several drop‐in fuels, in which alternative fuels are typically blended with conventional Jet A fuel. Because of blending, the drop‐in fuels consist of both aliphatic and aromatic components. To achieve a fundamental understanding of how individual aliphatic and aromatic components interact with the aerospace‐grade composites, we have considered four model fuels, three aliphatic with varying chain lengths and one aromatic. The absorption of these model fuels by composites in three absorption/desorption cycles was captured and compared to the conventional Jet A fuel. The equilibrium weight gain by the composites due to absorption was low but was different for each model fuel, and the trend could be validated using Hansen solubility parameters. The absorption of model fuels decreased the glass transition temperature of composites. The change in glass transition temperature was not significantly different between the model fuels and the conventional fuel. These results can be translated to alternative fuels, making them a possible substitute for Jet A in the aviation industry.

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Section: Introductionmentioning

confidence: 99%

Effects of cyclic absorption–desorption of model fuels by aerospace‐grade carbon/epoxy composites

et al. 2023

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“…Therefore, interfacial bonding between reinforcement and matrix in CF‐reinforced PEEK composites is weak. Thus, appropriate interfacial strengthening measures must be taken to improve the interfacial chemical bonding and interfacial mechanical bonding between CF and PEEK 12–14 …”

Section: Introductionmentioning

confidence: 99%

“…Thus, appropriate interfacial strengthening measures must be taken to improve the interfacial chemical bonding and interfacial mechanical bonding between CF and PEEK. [12][13][14]…”

Section: Introductionmentioning

confidence: 99%

Improving the interface of carbon‐fibre‐reinforced poly(ether‐ether‐ketone) composites with fibre surface coating: a review

Ren

Zhu

Zhang³

et al. 2022

Polymer International

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As a high‐performance thermoplastic polymer, poly(ether‐ether‐ketone) (PEEK) has excellent thermal stability and mechanical properties; it is widely used in the aerospace field. However, PEEK has high viscosity, high processing temperature and poor fluidity in the molten state. In preparing carbon fibre (CF)/PEEK composites, poor impregnation performance will occur, resulting in high porosity and poor mechanical properties of the CF/PEEK composites. This mini‐review focuses on improving the interface of the CF/PEEK composite by coating the CF surface and introduces the preparation of CF/PEEK composites by coating CF with a resin‐based sizing agent, a mixed sizing agent and nanoparticles. Meanwhile, the properties of CF/PEEK composites prepared by different coating methods are compared. © 2022 Society of Industrial Chemistry.

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“…The split Hopkinson pressure bar (SHPB) has been widely used and modified to study the dynamic properties of fiber-reinforced composites under compressive, [1][2][3][4][5][6][7][8][9] tensile, [10][11][12][13][14] and shear [15,16] loading conditions. Research efforts utilizing SHPB to characterize dynamic properties of fiber-reinforced plastic (FRP) composites at high strain rates have been focused on the effect of specimen geometry, [17] temperature, [18][19][20] moisture, [21] fiber orientation, [22][23][24] matrix [25] and strain-rate. [4,5,19,20,26] Among the research investigating strain-rate effects on the dynamic properties of FRP composites, Yokoyama et al [22] investigated the high strain-rate compressive stress-strain behavior of a unidirectional carbon/epoxy (T700/2521) composite in all three principal material directions using the stress reversal SHPB.…”

mentioning

confidence: 99%

Mechanical behavior and damage kinetics of a unidirectional carbon/epoxy laminated composite under dynamic compressive loading

et al. 2022

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In this work, mechanical behavior and damage kinetics of a unidirectional carbon/epoxy laminated composite (CFRP) under dynamic compressive loading were investigated. An Instron testing machine and a pulse‐shaped split Hopkinson pressure bar (SHPB) apparatus were employed to test the quasi‐static and dynamic mechanical properties of the material, respectively. Digital image correlation (DIC) combined with ultra high‐speed photography was used to study the deformation and failure process of the specimen under dynamic loading. The results show that the failure modes of the material along the main direction were strain‐rate sensitive. The failure mode along the fiber direction was observed to change from crushing followed by fiber kink banding to predominantly interlaminar delamination, longitudinal cracking and fiber buckling delamination as the strain rate increases from quasi‐static to high strain rates. Furthermore, an empirical formula for dynamic compression strength was established based on the test data. Model predictions and experimental data are in very good agreement. Finally, a simplified Zhu‐Wang‐Tang (ZWT) nonlinear visco‐hyperelastic constitutive model ZWT nonlinear viscoelastic model was developed to predict the mechanical behaviors of CFRP under dynamic impact loading. The predicted values are observed to essentially match the trends of the experimental results. This research will further improve the design of CFRP composites subjected to high‐speed impact loads during service.

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Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

Cited by 5 publications

References 42 publications

Effects of cyclic absorption–desorption of model fuels by aerospace‐grade carbon/epoxy composites

Effects of cyclic absorption–desorption of model fuels by aerospace‐grade carbon/epoxy composites

Improving the interface of carbon‐fibre‐reinforced poly(ether‐ether‐ketone) composites with fibre surface coating: a review

Mechanical behavior and damage kinetics of a unidirectional carbon/epoxy laminated composite under dynamic compressive loading

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