Quantification of Porosity in Ceramic Matrix Composites Using Thermography

Santhosh, U.; Gowayed, Yasser; Ojard, G.; Smyth, I.; Kalarikkal, Sujith; Jefferson, George

doi:10.1007/s10921-018-0487-z

Cited by 19 publications

(6 citation statements)

References 29 publications

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Section: Multiscale Structure and Defects Characterizationmentioning

confidence: 91%

“…A primary cause of such defects is due to the obstruction of the wavy tows to the flow of the matrix material. 12,15 It is worth mentioning that the presence of coalescence between these large voids and other types of defects was also observed. b. Interlaminar separations or debonding defects: The possible locations of these defects are typically between different adjacent layers, along with either the fill or warp directions, indicated as "b" in Figure 2.…”

Section: Multiscale Structure and Defects Characterizationmentioning

confidence: 91%

“…Santhosh et al used thermography scanning images to characterize and quantify porosity in CG-Nicalon TM /SiNC CMCs. 15 Aziz et al used a computed tomography (CT) technique to characterize initial matrix porosity in MI SiC/SiC CMCs. 16 In this paper, we present an exhaustive material characterization study to quantify scale-dependent defects and capture variability in the predicted constitutive response of a C/SiNC based CMC.…”

Section: Introductionmentioning

confidence: 99%

“…used thermography scanning images to characterize and quantify porosity in CG-Nicalon™/SiNC CMCs. 15 Aziz et al. used a computed tomography (CT) technique to characterize initial matrix porosity in MI SiC/SiC CMCs.…”

Section: Introductionmentioning

confidence: 99%

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Multiscale characterization and representation of variability in ceramic matrix composites

Khafagy

Datta

Chattopadhyay

2021

Journal of Composite Materials

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Low density, high strength, and high creep and oxidation resistance properties of ceramic matrix composites (CMCs) make them an ideal choice for use in extreme environments in space and military applications. This paper presents a detailed characterization study of structural and manufacturing flaws in Carbon fiber Silicon-Carbide-Nitride matrix (C/SiNC) CMCs at different length-scales. Energy-dispersive spectroscopy (EDS) is used for the chemical characterization of the material’s elemental constituents. High-resolution multiscale graphs obtained from scanning electron microscope (SEM) and confocal laser scanning microscope (LSM) are used to characterize the distribution and morphology of defects at different length scales. This is followed by the classification and quantification of the common manufacturing defects. An image processing algorithm based on the image segmentation process is developed to quantify the variability of various scale-dependent architectural parameters. Finally, a three-dimensional stochastic representative volume element (SRVE) generation algorithm is developed to provide precise representations of material textures at multiple length scales. The developed algorithm accurately accounts for material features and flaws based on a range of multiscale structural and defects characterization results.

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Section: Multiscale Structure and Defects Characterizationmentioning

confidence: 91%

Section: Multiscale Structure and Defects Characterizationmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multiscale characterization and representation of variability in ceramic matrix composites

Khafagy

Datta

Chattopadhyay

2021

Journal of Composite Materials

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“…Liu et al applied this method to investigate the influence of moisture in different lightweight mortars on their thermal conductivities [18]. Santhosh et al used it also to determine the porosity in ceramics [19]. However, most of these methods are laboratory measurements, for which a sample with strong restrictions in size and dimension must be taken.…”

Section: Introductionmentioning

confidence: 99%

Determination of Thermal Parameters of Concrete by Active Thermographic Measurements

2022

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The knowledge of the thermal parameters of a particular concrete is essential for thermal design of a building, but also could help to identify and assess the state of a concrete structure. Active thermography has the potential to be applied onsite and to provide a fast investigation of thermal properties. In this work, three different concrete samples were investigated by active thermography in reflection and in transmission setup. It was found that this method yields the same results without direct contact as the Transient Plane Source (TPS) method as an established inspection tool.

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Micro-CT Based Statistical Geometry Modeling and Numerical Verification of 2.5D Sicf/Sic Composite

Yang

Qiu²,

Liu

et al. 2021

Appl Compos Mater

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Quantification of Porosity in Ceramic Matrix Composites Using Thermography

Cited by 19 publications

References 29 publications

Multiscale characterization and representation of variability in ceramic matrix composites

Multiscale characterization and representation of variability in ceramic matrix composites

Determination of Thermal Parameters of Concrete by Active Thermographic Measurements

Micro-CT Based Statistical Geometry Modeling and Numerical Verification of 2.5D Sicf/Sic Composite

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