Effect of the Test Procedure and Thermoplastic Composite Resin Type on the Curved Beam Strength

Hron, Robin; Kadlec, Martin; Růžek, Roman

doi:10.3390/ma14020352

Cited by 16 publications

(11 citation statements)

References 21 publications

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“…1,2 With the growing concerns about environment, thermoplastics have received widespread attention, thanks to their processability in melt form and inherent recyclability. 3,4 Among common thermoplastics, polypropylene (PP) polymer is increasingly gaining favor in many engineering applications 5 considering its low cost, chemical resistance, and promising mechanical properties. 6 However, its drawbacks such as notch sensitivity and brittleness at low temperature lead to the strengthening of PP.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static perforation response of inter-ply hybrid polypropylene composites at various temperatures

Öztoprak

Özdemir

Kandas

2021

Journal of Composite Materials

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This study is motivated by the lack of knowledge in the research of mechanical characterization of thermoplastic composites (TPCs) with additional fiber hybridization. To enhance the mechanical properties of long glass fiber-reinforced polypropylene (PP) composite, hybridization via alkaline-treated aramid and carbon fabrics is performed. High performance fabrics modified with 10 wt.% sodium hydroxide (NaOH) aqueous solution are incorporated into the PP composite as reinforcements. Herewith, four arrangements (hybrid composites) for two different reinforcements and two different stacking configurations and the monolithic composite are separately investigated in terms of quasi-static perforation behavior. Failure mechanisms are also evaluated at macro level by visual observations and micro scales through a scanning electron microscopy (SEM). The experimental results provide a basis for selecting fiber-enabled hybridization and lay-up configuration with improved perforation resistance. Moreover, the influence of test temperature is reported for three different values as 20°C, 60°C, and 100°C. Based upon the results, the maximum penetration force of hybrid configuration with single-layered aramid fabric reinforcements is approximately 15.5% higher than that of single-layered carbon fabric reinforcements at 60°C test temperature. It is further observed that the absorbed energy improves as the number of fabrics is increased in both aramid and carbon reinforcements. The test temperatures significantly affect the failure mechanisms of TPCs. A smaller damaged area at the penetrated faces of the hybrid structures is obtained by comparison with the monolithic TPCs.

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Section: Introductionmentioning

confidence: 99%

Quasi-static perforation response of inter-ply hybrid polypropylene composites at various temperatures

Öztoprak

Özdemir

Kandas

2021

Journal of Composite Materials

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“…PAEK possesses high glass transition temperature and melting temperature of 152 C and 372 C, respectively and is found to be greater than that of PEEK. 13 Owing to their higher glass transition temperature and abrasion resistance, PAEK is chosen for wear-safe applications. 14 PAEK used in conjunction with carbon fiber reinforcements can produce laminates that can retain their fracture toughness and other mechanical properties in a wide range of service temperatures.…”

Section: Introductionmentioning

confidence: 99%

Performance comparison of carbon fiber reinforced polyaryletherketone and epoxy composites: Mechanical properties, failure modes, cryo‐thermal behavior, and finite element analysis

Painkal

Jayanarayanan

Balachandran

2022

J of Applied Polymer Sci

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High‐performance thermoplastic composites are gaining attention as potential replacement for thermoset composites in high‐end structural applications owing to their superior fracture toughness and recyclability. In this study, polyaryletherketone (PAEK) and carbon fabric (CF) reinforced PAEK are compared with epoxy and epoxy‐CF composites. PAEK‐CF composites are prepared by film stacking method followed by compression molding while hand lay‐up technique was used for epoxy‐CF composites. PAEK and PAEK‐CF composites possess superior tensile properties, flexural strength and fracture toughness compared to those prepared from epoxy. The incorporation of CF improved the wear resistance in both PAEK and epoxy and PAEK‐CF exhibited the lowest wear rate. The investigation of interlaminar shear strength of the composites was conducted and the highest value observed for PAEK‐CF composite. Wear and fracture surface analysis suggested ductile failure for PAEK and PAEK‐CF composites and brittle failure in epoxy composites, as indicated by interfacial bonding/debonding and fiber pullout, at the fracture surface. Cryo‐thermal cycling effects on the tensile properties, fracture toughness and fracture surface morphology of the composites are studied. The failure behavior obtained from experimental studies was corroborated with finite element method‐based simulation models of fracture toughness response in single edge notch bend test using Abaqus/Explicit.

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“…Owing to their superior features, such as high specific strength and stiffness, high specific moduli, damage tolerance, and environmental resilience, carbon-fiber-reinforced thermoplastic (CFRTP) composites have been widely used in the aerospace industry [ 1 , 2 , 3 , 4 , 5 ]. Composite components are divided into numerous parts as per the requirements of structural design, manufacture, and maintenance of composites, as well as the limitations of the integrity molding technology.…”

Section: Introductionmentioning

confidence: 99%

Tests and Numerical Study of Single-Lap Thermoplastic Composite Joints Bolted by Countersunk

et al. 2022

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Tensile tests were carried out to investigate the effect of stacking sequences on the bearing strength of single-lap thermoplastic composite countersunk bolted joints. A 3D elastoplastic model was built based on a plastic theory for numerical analysis. The damage initiation was judged based on LaRC05 criteria, and the damage propagation was described by using a nonlinear, gradual unloading method based on crack band theory. The accuracy of the present model was validated by comparing the numerical results to those from the tests. The test results showed that the effects of stacking sequences on the ultimate bearing strength and the 2% offset bearing strength are limited. Moreover, the numerical results depicted that the ultimate bearing strength and the 2% offset bearing strength reduce when the bolt-tightening torque or the bolt–hole clearance is increased.

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Effect of the Test Procedure and Thermoplastic Composite Resin Type on the Curved Beam Strength

Cited by 16 publications

References 21 publications

Quasi-static perforation response of inter-ply hybrid polypropylene composites at various temperatures

Quasi-static perforation response of inter-ply hybrid polypropylene composites at various temperatures

Performance comparison of carbon fiber reinforced polyaryletherketone and epoxy composites: Mechanical properties, failure modes, cryo‐thermal behavior, and finite element analysis

Tests and Numerical Study of Single-Lap Thermoplastic Composite Joints Bolted by Countersunk

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