A Study of Particle Surface Effects on the Spall Strength of Particle-Reinforced Polymer Matrix Composites

Lebar, Anton

doi:10.22215/etd/2020-14088

Cited by 2 publications

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“…As shown by the tensile failure stresses results, they are dependent on the structure of the filler, and the best results were obtained in composites with circular particles, and the lowest with square ones. Another work shows the influence of particle geometry on the properties of composites was Lebar et al [ 16 ]. In their work, they investigated the influence of the particle shape on the spall strength of polyurethane composites reinforced with aluminum oxide.…”

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confidence: 99%

Mechanical Behavior and Morphological Study of Polytetrafluoroethylene (PTFE) Composites under Static and Cyclic Loading Condition

et al. 2021

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The key goal of this study was to characterize polytetrafluoroethylene (PTFE) based composites with the addition of bronze particles and mineral fibers/particles. The addition of individual fillers was as follows: bronze—30–60 wt.%, glass fibers—15–25 wt.%, coke flakes—25 wt.% and graphite particles—5 wt.%. Both static and dynamic tests were performed and the obtained results were compared with the microscopic structure of the obtained fractures. The research showed that the addition of 60 wt.% bronze and other mineral fillers improved the values obtained in the static compression test and in the case of composites with 25 wt.% glass fibers the increase was about 60%. Fatigue tests have been performed for the compression-compression load up to 100,000 cycles. All tested composites show a significant increase in the modulus as compared to the values obtained in the static compression test. The highest increase in the modulus in the dynamic test was obtained for composites with 25 wt.% of glass fibers (increase by 85%) and 25 wt.% of coke flakes (increase by 77%), while the lowest result was obtained for the lowest content of bronze particles (decrease by 8%). Dynamic tests have shown that composites with “semi-spherical” particles are characterized by the longest service life and a slower fatigue crack propagation rate than in the case of the long glass fibers. In addition, studies have shown that particles with smaller sizes and more spherical shape have a higher ability to dissipate mechanical energy, which allows their use in friction nodes. On the other hand, composites with glass fiber and graphite particles can be successfully used in applications requiring high stiffness with low amplitude vibrations.

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Section: Introductionmentioning

confidence: 99%

Mechanical Behavior and Morphological Study of Polytetrafluoroethylene (PTFE) Composites under Static and Cyclic Loading Condition

et al. 2021

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“…Variations in density were achieved by adjusting the mass ratio of elastomer binder to contrast agent. Given the random orientation of the BaSO 4 particles in the elastomer matrices, the elastic moduli of the resulting composites were calculated with the Reuss mixture model[56]. The mixture model indicates an average increase in moduli of 30% for the composite material.…”

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A Study of the Impact Response of Discrete Regions of the Human Cadaver Brain

Dutrisac¹

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A Study of Particle Surface Effects on the Spall Strength of Particle-Reinforced Polymer Matrix Composites

Cited by 2 publications

References 0 publications

Mechanical Behavior and Morphological Study of Polytetrafluoroethylene (PTFE) Composites under Static and Cyclic Loading Condition

Mechanical Behavior and Morphological Study of Polytetrafluoroethylene (PTFE) Composites under Static and Cyclic Loading Condition

A Study of the Impact Response of Discrete Regions of the Human Cadaver Brain

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