Model-based measurement uncertainty evaluation, with applications in testing

Cox, M G; Désenfant, Michèle; Harris, P M; Siebert, Bernd

doi:10.1007/s00769-003-0711-z

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The model-based approaches require a thorough understanding of the principle of technology and the source of uncertainties. A few examples of model-based approaches can be found in [220][221][222] for different measurement technologies, and more general guidance is available in [223][224][225][226]. However, due to the complex interaction between x-rays and materials and the complex data process chain to achieve dimensional measurements, there is little development of uncertainty evaluation using model-based approaches in the field of XCT.…”

Section: Model-based Approachesmentioning

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: Model-based Approachesmentioning

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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“…Several documents, reports and guidelines from many internationally recognized bodies (see for examples references 3, [10][11][12][13][14][15][16][17] and papers (see for example references [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] were aimed to present, explain and/or discuss the many theoretical and practical aspects of UOM evaluation. Despite of this exhaustive information, operators of the laboratories of chemical analysis are still fronting serious problems in estimating and/or making use of the UOM of their experimental results.…”

Section: Introductionmentioning

confidence: 99%

“…The literature reports few other approaches, either relevant to extensions/modifications of the bottom-up one 20,34,35 or more or less different 19,[24][25][26][28][29][30]33 but, as far as we know, they have never obtained any international recognition.…”

Section: Introductionmentioning

confidence: 99%

“…After a short re-examination of the existing UOM approaches, some applicative problems are discussed in the light of the most representative literature information.Some different approaches to UOM were developed (see for example references [18][19][20][24][25][26][27][28][29][30][31][34][35][36] but, at present, the bottom-up one exhaustively described by the ISO/BIPM "Guide to the expression of Uncertainty in Measurement" (conventionally known as the GUM) 3 and by the EURACHEM/CITAC Guide 15 is by far that most largely accepted by international institutions dealing with metrology fundamentals. Sometimes, additional problems, at present under debate, make their efforts even more stressful.…”

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confidence: 99%

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Uncertainty of Measurement: Approaches and Open Problems

Desimoni

Brunetti

2005

Annali di Chimica

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Despite of exhaustive literature information, analysts are still fronting serious problems in estimating the uncertainty of measurement (UOM), mainly because of the intrinsic difficulties in choosing an appropriate approach and/or of an inadequate background in statistics and metrology fundamentals. Sometimes, additional problems, at present under debate, make their efforts even more stressful. In this paper, attention is mainly paid to intra-laboratory estimation of UOM, the most frequent situation. After a short re-examination of the existing UOM approaches, some applicative problems are discussed in the light of the most representative literature information.

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