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Kuo, Wen‐Shyong; Ko, Tse‐Hao; Cheng, K. B.; Hsieh, K.A.

doi:10.1023/a:1017968914529

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…One reason for choosing the lower temperature in the first three cycles was to reduce the processing time. According to previous studies, the majority of chemical reactions in carbonization take place in between 400 and 6008C [3].…”

Section: Materials Preparationmentioning

confidence: 98%

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Compressive damage in filament‐wound carbon/carbon composites

Kuo

2008

Polymer Composites

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The processing characteristics and the induced compressive damage in filament-wound carbon/carbon composites were examined. Tubular carbon/phenolic composites were made by the filament winding method. The inside diameter was 25.4 mm and the nominal thickness was 2.5 mm. The cured composites were then carbonized. Three more cycles of matrix densification were repeated. After densification, the composites were graphitized at 26008C. Compressive tests were then carried out for the cured, carbonized, and graphitized composites. The load was applied directly on the end of the tube. The loading response and the induced damage were studied. Their microscopic fracture behaviors were examined by optical and scanning electron microscopes. With the heating temperature increased, the damage modes shifted from a ductile fracture in the cured composites to a more brittle fracture in the graphitized composites. The resulting strength and stiffness were also decreased significantly with the temperature. Kinking of fibers was the major mode in the cured specimens, while separation of bundles became more prominent in the graphitized specimens. FIG. 14. SEM image of the graphitized specimen (G45) showing layered patterns in the fractured matrix. FIG. 13. SEM image of the fractured carbonized specimen (C55) showing fiber bending fracture.

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Section: Materials Preparationmentioning

confidence: 98%

“…In applying such materials, however, one concern is the structural integrity. It was previously reported that they are considerably weaker than conventional polymer-matrix composites primarily because the pyrolysis introduces voids and cracks in the carbon matrix [1][2][3][4]. Defects of these kinds are often intense in C/C composites.…”

Section: Introductionmentioning

confidence: 99%

Compressive damage in filament‐wound carbon/carbon composites

Kuo

2008

Polymer Composites

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“…In past years, the flexure properties of thermoset-based 3D-FRC were widely studied [ 21 ]. Several researchers studied their on-axis (warp and fill) flexure properties [ 22 , 23 , 24 , 25 , 26 ] and concluded that delamination resistance and bending properties were improved by introducing a z-binder in the fabric architecture [ 27 , 28 ]. Apart from the on-axis flexure properties, the off-axis bending behaviour of 3D-FRC was rarely discussed.…”

Section: Introductionmentioning

confidence: 99%

Off-Axis and On-Axis Performance of Novel Acrylic Thermoplastic (Elium®) 3D Fibre-Reinforced Composites under Flexure Load

et al. 2022

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The flexure response of novel thermoplastic (Elium®) 3D fibre-reinforced composites (FRC) was evaluated and compared with a conventional thermoset (Epolam®)-based 3D-FRC. Ten different types of sample 3D-FRC were prepared by varying fibre orientations, i.e., 0°, 30°, 45°, 60° and 90°, and resin system, i.e., thermoplastic and thermoset. The bending characteristics and failure mechanisms were determined by conducting a three-point bend test. Results elucidate that the on-axis specimens show linear response and brittle failure; in contrast, the off-axis specimens depicted highly nonlinear response and ductile failure. The thermoplastic on-axis specimen exhibited almost similar flexure strength; in comparison, the off-axis specimens show ~17% lower flexure strength compared to thermoset 3D-FRC. Thermoplastic 3D-FRC shows ~40% higher energy absorption, ~23% lower flexure modulus and ~27% higher flexure strains as compared to its thermoset counterpart.

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Three Dimensional Woven Fabric Composites

Kuo¹

2012

Polymer Composites

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Untitled

Cited by 6 publications

References 10 publications

Compressive damage in filament‐wound carbon/carbon composites

Compressive damage in filament‐wound carbon/carbon composites

Off-Axis and On-Axis Performance of Novel Acrylic Thermoplastic (Elium®) 3D Fibre-Reinforced Composites under Flexure Load

Three Dimensional Woven Fabric Composites

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