Application of X-ray phase-contrast imaging technique in the study of pyrocarbon-coated zirconia kernels

Kashyap, Yogesh; Yadav, P.S.; Sarkar, Partha Sarathi; Agrawal, A. K.; Roy, Tushar; Sinha, Alok; Dasgupta, Kinshuk; Sathiyamoorthy, D.

doi:10.1016/j.ndteint.2009.01.004

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…An image processing and image analysis facility to extract quantitative structure and density information from tomographic images is also available as per the requirements. A phase-retrieval facility is available to obtain quantitative phase information from phase contrast X-ray images (Kashyap et al, 2009(Kashyap et al, , 2010a(Kashyap et al, ,b, 2011Yadav et al, 2008).…”

Section: Figurementioning

confidence: 99%

Design, development and first experiments on the X-ray imaging beamline at Indus-2 synchrotron source RRCAT, India

Agrawal

Singh

Kashyap

et al. 2015

J Synchrotron Radiat

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A full-field hard X-ray imaging beamline (BL-4) was designed, developed, installed and commissioned recently at the Indus-2 synchrotron radiation source at RRCAT, Indore, India. The bending-magnet beamline is operated in monochromatic and white beam mode. A variety of imaging techniques are implemented such as high-resolution radiography, propagation- and analyzer-based phase contrast imaging, real-time imaging, absorption and phase contrast tomography etc. First experiments on propagation-based phase contrast imaging and micro-tomography are reported.

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Section: Figurementioning

confidence: 99%

Design, development and first experiments on the X-ray imaging beamline at Indus-2 synchrotron source RRCAT, India

Agrawal

Singh

Kashyap

et al. 2015

J Synchrotron Radiat

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“…Low-density materials have found potential applications in nuclear technology including the pyrocarbon and silicon carbide coatings for use in fuel pellets for fusion reactors. Kashyap and co-workers have analyzed the uniformity and quality of such coatings on test samples based on alumina and zirconia microspheres [ 109 , 110 ]. Even lower density materials are used in inertial confinement fusion capsules, which contain a solid deuterium-tritium layer in a copper doped beryllium shell and which have been usefully characterized using phase-contrast methods [ 111 , 112 ].…”

Section: Reviewmentioning

confidence: 99%

In-Line Phase-Contrast X-ray Imaging and Tomography for Materials Science

2012

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X-ray phase-contrast imaging and tomography make use of the refraction of X-rays by the sample in image formation. This provides considerable additional information in the image compared to conventional X-ray imaging methods, which rely solely on X-ray absorption by the sample. Phase-contrast imaging highlights edges and internal boundaries of a sample and is thus complementary to absorption contrast, which is more sensitive to the bulk of the sample. Phase-contrast can also be used to image low-density materials, which do not absorb X-rays sufficiently to form a conventional X-ray image. In the context of materials science, X-ray phase-contrast imaging and tomography have particular value in the 2D and 3D characterization of low-density materials, the detection of cracks and voids and the analysis of composites and multiphase materials where the different components have similar X-ray attenuation coefficients. Here we review the use of phase-contrast imaging and tomography for a wide variety of materials science characterization problems using both synchrotron and laboratory sources and further demonstrate the particular benefits of phase contrast in the laboratory setting with a series of case studies.

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“…Similarly, scanning electron microscopy (SEM) analysis is also a destructive technique used widely to perform cross‐sectional analysis . In terms of nondestructive inspection, X‐ray phase‐contrast imaging (PCI) is preferred over conventional X‐ray imaging because it can image adjacent coating layers with sharp interfaces without sacrificing time in the examination of TRISO fuel particles . Woong Ki Kim et al first applied PCI to visualize the structure of each coating layer, then the Sobel operator and a 3 × 3 average filter were used to extract interfaces between coating layers.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9] In terms of nondestructive inspection, X-ray phase-contrast imaging (PCI) is preferred over conventional X-ray imaging because it can image adjacent coating layers with sharp interfaces without sacrificing time in the examination of TRISO fuel particles. 10,11 Woong Ki Kim et al first applied PCI to visualize the structure of each coating layer, then the Sobel operator and a 3 × 3 average filter were used to extract interfaces between coating layers. While processing radius information, they relied mainly on a manual method based on human visual intelligence.…”

Section: Introductionmentioning

confidence: 99%

A novel method to inspect coating thickness of tristructural isotropic fuel particles

et al. 2019

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Summary X‐ray phase‐contrast imaging (PCI) is a nondestructive method to measure the coating thickness of tristructural isotropic (TRISO) fuel particles, with the advantages of generating sharp interfaces between two coating layers. However, the analysis of PCI images is hindered by noise and subject to operator‐dependence. The aim of this study was to develop a measurement method that can exclude frustrating noise corruption and achieve computerized automation. The total variation (TV) algorithm was applied to reduce the unnecessary information, and the denoising results were optimized with the introduction of contrast‐to‐noise ratio (CNR). Contours of denoised images were automatically extracted using an adaptive Canny operator, employing the P‐tile method. Thickness data, derived using the proposed method, were compared with those of ceramography, and the results were confirmed by performing the one‐way analysis of variance (ANOVA) analysis. This measuring method allowed the denoising process to restore images with appropriate edge features and detect edges with more sharpness and continuity in minimal time. When evaluated against ceramography, there was a minor discrepancy (less than 10%) in all coating layers. The one‐way ANOVA analysis exhibited the rejection of the significant differences in the thicknesses measured by the two aforementioned methods. The proposed method seems promising for practical application of such nondestructive measurements.

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Application of X-ray phase-contrast imaging technique in the study of pyrocarbon-coated zirconia kernels

Cited by 4 publications

References 11 publications

Design, development and first experiments on the X-ray imaging beamline at Indus-2 synchrotron source RRCAT, India

Design, development and first experiments on the X-ray imaging beamline at Indus-2 synchrotron source RRCAT, India

In-Line Phase-Contrast X-ray Imaging and Tomography for Materials Science

A novel method to inspect coating thickness of tristructural isotropic fuel particles

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