Tensile Fracture Behavior of Nicalon/SiC Composites

Kim, Jeongguk; Liaw, Peter K.

doi:10.1007/s11661-007-9306-3

Cited by 14 publications

(15 citation statements)

References 25 publications

(40 reference statements)

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“…Comparisons involving radiographic imaging and ultrasonic imaging techniques were performed to study the evolution of damage (cracks, delaminations) in self-healing composites [14], for the detection of BVID in composites (e.g. matrix and fibre cracks, debonding and fibre pullout) [15], as well as the evaluation of porosity content in composites plates, which is more difficult to estimate using ultrasonic imaging alone [16]. Both imaging methods are capable of detecting damage in fibre-reinforced composite plates, with X-ray CT imaging offering higher resolutions and capable of detecting micro-damage and individual plies, up to the detection of individual fibres [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced composite plate impact damage detection and characterisation using X-Ray refraction and scattering contrast combined with ultrasonic imaging

Shoukroun

Massimi

Iacoviello

et al. 2020

Composites Part B: Engineering

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Ultrasonic imaging and radiography are widely used in the aerospace industry for nondestructive evaluation of damage in fibre-reinforced composites. Novel phase-based Xray imaging methods use phase effects occurring in inhomogeneous specimens to extract additional information and achieve improved contrast. Edge Illumination employs a coded aperture system to extract refraction and scattering driven signals in addition to conventional absorption. Comparison with ultrasonic immersion C-scan imaging and with a commercial X-ray CT system for impact damage analysis in a small cross-ply carbon fibre-reinforced plate sample was performed to evaluate the potential of this new technique. The retrieved refraction and scattering signals provide complementary information, revealing previously unavailable insight on the damage 2 extent and scale, not observed in the conventional X-ray absorption and ultrasonic imaging, allowing improved damage characterisation.

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Section: Introductionmentioning

confidence: 99%

Enhanced composite plate impact damage detection and characterisation using X-Ray refraction and scattering contrast combined with ultrasonic imaging

Shoukroun

Massimi

Iacoviello

et al. 2020

Composites Part B: Engineering

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“…Ceramic composites are structural materials used at high temperatures that have been proven over the past few decades [ 1 , 2 , 3 , 4 ]. For this reason, it has been spotlighted as an excellent material in spacecraft insulation materials, high-temperature gas turbine rotors, and thermal management systems, and, recently, it is expanding its use as a material for brake discs for automobiles and railways [ 1 , 2 , 3 , 4 , 5 , 6 ]. Stadler et al studied ceramic composite materials as friction materials [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Failure Mechanisms in Ceramic Composites as Potential Railway Brake Disc Materials

Kim

2020

Materials

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Ceramic composite materials have been efficiently used for high-temperature structural applications with improved toughness by complementing the shortcomings of monolithic ceramics. In this study, the fracture characteristics and fracture mechanisms of ceramic composite materials were studied. The ceramic composite material used in this study is Nicalon ceramic fiber reinforced ceramic matrix composites. The tensile failure behavior of two types of ceramic composites with different microstructures, namely, plain-weave and cross-ply composites, was studied. Tensile tests were performed on two types of ceramic composite material specimens. Microstructure analysis using SEM was performed to find out the relationship between tensile fracture characteristics and microstructure. It was found that there was a difference in the fracture mechanism according to the characteristics of each microstructure. In this study, the results of tensile tests, failure modes, failure characteristics, and failure mechanisms were analyzed in detail for two fabric structures, namely, plain-weave and cross-ply structures, which are representative of ceramic matrix composites. In order to help understanding of the fracture process and mechanism, the fracture initiation, crack propagation, and fracture mechanism of each composite material are schematically expressed in a two-dimensional figure. Through these results, it is intended to provide useful information for the design of ceramic composite materials based on the mechanistic understanding of the fracture process of ceramic composite materials.

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“…Various forms of nondestructive evaluation (NDE) techniques are applied to aid this research [9,10]. Techniques such as acoustic emission, high-speed infrared camera (Infrared Thermography), and ultrasonic testing are commonly used, and acoustic emission and high-speed infrared camera are useful for monitoring various signals generated from specimens during mechanical testing [11,12,13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Tensile Fracture Behavior and Characterization of Ceramic Matrix Composites

Kim

2019

Materials

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Tensile fracture behavior of ceramic matrix composites (CMCs) was investigated using characterization tools. First, a high-speed infrared camera was used to monitor the surface temperature of the CMC specimen during mechanical testing. An infrared camera is a tool used to detect infrared (IR) radiation emitted from a specimen as a function of temperature, and it was used to analyze the temperature monitoring of specimen surface and fracture behavior during the tensile test. After the test, the microstructural analysis using SEM was performed. SEM analysis was performed to investigate the fracture mode and fracture mechanism of CMC materials. In this paper, it was found that the results of the surface temperature monitoring obtained from IR thermal imaging technology and the failure mode analysis obtained through SEM were in a good agreement. These techniques were useful tools to explain the mechanical behavior of ceramic matrix composites. The detailed experiments and testing results will be provided.

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Tensile Fracture Behavior of Nicalon/SiC Composites

Cited by 14 publications

References 25 publications

Enhanced composite plate impact damage detection and characterisation using X-Ray refraction and scattering contrast combined with ultrasonic imaging

Enhanced composite plate impact damage detection and characterisation using X-Ray refraction and scattering contrast combined with ultrasonic imaging

Investigation of Failure Mechanisms in Ceramic Composites as Potential Railway Brake Disc Materials

Tensile Fracture Behavior and Characterization of Ceramic Matrix Composites

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