3D reconstruction of a battery pouch cell in its fresh state (a); 3D reconstruction showing the pouch cell after overcharge-induced thermal runaway (b). Source: Investigating lithium-ion battery materials during overcharge-induced thermal runaway: an operando and multi-scale X-ray CT study, Finegan, Donal P. et al, 2016.
Microcomputed tomography–based characterization of advanced materials: a review
imaging the inner structure and morphological characteristics of materials is important in material design and engineering because the microstructure of materials helps determine their attributes and behavior. Micro-CT non-destructive imaging can reveal the volume, shape, spatial, and size distribution within a sample. This article “summarizes characteristic materials science micro-CT applications in bioinspired materials, structural materials, porous natural materials, energy storage, energy conversion, and filtration.”
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X-Ray Microcomputed Tomography in Additive Manufacturing: A Review of the Current Technology and Applications
Micro-CT is especially useful and accurate for dimensional measurement and porosity analysis and is an established method of testing and analyzing additively manufactured parts. This article summarizes how micro-CT has been applied to AM, including new and specialized applications. “The review ends with perspectives on the most time- and cost-effective ways to make use of microCT for various AM applications from R&D up to industrial production, with suggestions for scan strategies for different types of analyses.”
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Standard method for microCT-based additive manufacturing quality control 4: Metal powder analysis
This article demonstrates a dedicated workflow for the use of micro-CT to analyze powder feedstock used in additive manufacturing. “The methodology presented includes sample size requirements, scan conditions and settings, reconstruction and image analysis procedures.” The article states that micro-CT technology will support standardization in powder analysis in the additive manufacturing community, with the ultimate goal of improving the quality of additively manufactured parts by identifying impurities and defects in powders.
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Understanding MicroCT for Additive Manufacturing
“Engineers have long used standard X-rays to examine the internal structure of traditionally manufactured parts, developers and quality assurance groups have more recently applied the deeper capabilities of microCT to parts produced by additive manufacturing (AM).” Metal AM has many benefits, including the ability to produce internal structures. Parts must meet dimensional specs as well as display consistent and acceptable quality characteristics. Micro-CT is a powerful tool, able to measure high density and the absence of internal defects, as well as other quality characteristics.
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Related Article:
X-ray Microscopic Inspection of an Electronic Cigarette
Micro-CT Applications for Analysis of Medical Devices
Micro-CT for Pharmaceutical Applications: R&D, production, inspection, and failure analysis
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