2017
DOI: 10.1063/1.4974568
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Acoustic emission as a screening tool for ceramic matrix composites

Abstract: Ceramic matrix composites are composite materials with ceramic fibers in a high temperature matrix of ceramic or glass-ceramic. This emerging class of materials is viewed as enabling for efficiency improvements in many energy conversion systems. The key controlling property of ceramic matrix composites is a relatively weak interface between the matrix and the fiber that aids crack deflection and fiber pullout resulting in greatly increased toughness over monolithic ceramics. United Technologies Research Center… Show more

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Cited by 5 publications
(6 citation statements)
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“…Addressing this challenge, 3D‐DIC was leveraged to measure spatial strain fields over a targeted area of interest with sufficient resolution to track local strain concentrations associated with composite architectural features . AE monitoring was used to identify the strains at the onset and progression of cracking, leading to loss of He gas tightness . This work is intended to advance the scientific evaluation of brittle constituent tubes and progress the optimization of SiC/SiC CMCs for extreme conditions.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Addressing this challenge, 3D‐DIC was leveraged to measure spatial strain fields over a targeted area of interest with sufficient resolution to track local strain concentrations associated with composite architectural features . AE monitoring was used to identify the strains at the onset and progression of cracking, leading to loss of He gas tightness . This work is intended to advance the scientific evaluation of brittle constituent tubes and progress the optimization of SiC/SiC CMCs for extreme conditions.…”
Section: Introductionmentioning
confidence: 99%
“…[23][24][25][26] AE monitoring was used to identify the strains at the onset and progression of cracking, leading to loss of He gas tightness. [27][28][29] This work is intended to advance the scientific evaluation of brittle constituent tubes and progress the optimization of SiC/SiC CMCs for extreme conditions. Table 1 lists the specifications of the four different materials tested, including outer diameter (OD) and inner diameter (ID).…”
Section: Introductionmentioning
confidence: 99%
“…In composites, the modulus mainly represented the matrix performance. 27,28 Therefore, the silicon oxide matrix was seriously damaged in the early stage of the short-beam shear test. By contrast, the sudden drop in the load in the shear test occurs without an appreciable change in modulus.…”
Section: Failure Mechanism Of Al 2 O 3f /Sio 2 Composites By Short-be...mentioning
confidence: 99%
“…Therefore, AE technology is suitable for detecting damage in polymer matrix and CMC. 28,29 However, reports on the application of AE detection technology to OCMCs are few.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation