Dimensional Metrology for Industrial Computed Tomography

Hiller, Jochen; Miller, Thomas S.; Hornberger, Peter

doi:10.1201/9781351228251-48

Cited by 1 publication

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“…However, there are increasing demands to use XCT for dimensional metrology in recent years [174][175][176] due to the advantages of the technology to image non-line-ofsight features, especially for metal AM components. Industrial XCT and applications for dimensional metrology have been reviewed in [177,178]. Unlike contact coordinate measuring systems, the dimensional metrology framework for XCT is still under development.…”

Section: Xct For Dimensional Metrologymentioning

confidence: 99%

Review of high energy x-ray computed tomography for non-destructive dimensional metrology of large metallic advanced manufactured components

et al. 2022

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Advanced manufacturing technologies, led by additive manufacturing, have undergone significant growth in recent years. These technologies enable engineers to design parts with reduced weight while maintaining structural and functional integrity. In particular, metal additive manufacturing parts are increasingly used in application areas such as aerospace, where a failure of a mission-critical part can have dire safety consequences. Therefore, the quality of these components is extremely important. A critical aspect of quality control is dimensional evaluation, where measurements provide quantitative results that are traceable to the standard unit of length, the metre. Dimensional measurements allow designers, manufacturers and users to check product conformity against engineering drawings and enable the same quality standard to be used across the supply chain nationally and internationally. However, there is a lack of development of measurement techniques that provide non-destructive dimensional measurements beyond common non-destructive evaluation focused on defect detection. X-ray computed tomography (XCT) technology has great potential to be used as a non-destructive dimensional evaluation technology. However, technology development is behind the demand and growth for advanced manufactured parts. Both the size and the value of advanced manufactured parts have grown significantly in recent years, leading to new requirements of dimensional measurement technologies. This paper is a cross-disciplinary review of state-of-the-art non-destructive dimensional measuring techniques relevant to advanced manufacturing of metallic parts at larger length scales, especially the use of high energy XCT with source energy of greater than 400 kV to address the need in measuring large advanced manufactured parts. Technologies considered as potential high energy x-ray generators include both conventional x-ray tubes, linear accelerators, and alternative technologies such as inverse Compton scattering sources, synchrotron sources and laser-driven plasma sources. Their technology advances and challenges are elaborated on. The paper also outlines the development of XCT for dimensional metrology and future needs.

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Section: Xct For Dimensional Metrologymentioning

confidence: 99%