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Advanced Computed Tomography for dimensional and surface measurements in industry

Short Name: AdvanCT, Project Number: 17IND08
Man hands pointing at virtual blue gears on blurred robot arm and factory as background
Automation smart robotic industry
Coordinator
Ulrich Neuschaefer-Rube (PTB)

Enhancing the quality and efficiency of industrial CT measurements


Computed tomography (CT) scans are moving out of hospitals and into factories. Advances in the technique mean that it can increasingly be used to measure product dimensions and surface features.

While industrial CT measurement remains time consuming and prone to considerable error, it can simultaneously evaluate both the complete inner and outer geometry of a sample without causing it any damage. This could substantially improve product development and quality control, but quicker and more accurate techniques are needed to provide practical CT scanning that can be integrated into production lines.

 

This project will significantly enhance the quality and efficiency of measurements performed using CT.

By correcting geometry errors by 9 degrees of freedom and those originating in the X-ray tube and detector, the project will improve CT accuracy by a factor of 2-8. It will also produce fast CT methods to reduce measurement time to a few minutes or less, greatly benefiting advanced manufacturing in areas such as the automotive, aerospace, and telecoms industries.

 

Links
Project website
Link
Final Report
Publishable Summary
Publications
Traceable determination of non-static XCT machine geometry: New developments and case studies
2022

Proceedings 11th Conference on Industrial Computed Tomography (iCT) 2022,

Benchmarking of different reconstruction algorithms for industrial cone-beam CT
2022

Proceedings 11th Conference on Industrial Computed Tomography (iCT) 2022,

Establishment of X-ray computed tomography traceability for additively manufactured surface texture evaluation
2022

Additive Manufacturing

Evaluation of X-ray computed tomography for surface texture measurements using a prototype additively manufactured reference standard
2022

Proceedings 11th Conference on Industrial Computed Tomography (iCT) 2022,

Comparison campaign of XCT systems using machined standards representative of additively manufactured parts
2022

Proceedings 11th Conference on Industrial Computed Tomography (iCT) 2022,

Calibration of X-ray computed tomography for surface topography measurement using metrological characteristics
2021

Proceedings 21st euspen International Conference and Exhibition

Ant Colony-Based Hyperparameter Optimisation in Total Variation Reconstruction in X-ray Computed Tomography
2021

Sensors

Measurement of temperature induced X-ray tube transmission target displacements for dimensional computed tomography
2021

Precision Engineering

Fast Hyperparameter Calibration of Sparsity Enforcing Penalties in Total Generalised Variation Penalised Reconstruction Methods for XCT Using a Planted Virtual Reference Image
2021

Mathematics

Investigation of Temperature-Induced Errors in XCT Metrology
2020

International Journal of Automation Technology

Reference standards for XCT measurements of additively manufactured parts 
2020

Proceedings of the 10th Conference on Industrial Computed Tomography (iCT) 2020

Efficient Hyper-Parameter Selection in Total Variation-Penalised XCT Reconstruction Using Freund and Shapire’s Hedge Approach
2020

Mathematics

X-ray source tracking to compensate focal spot drifts for dimensional CT measurements
2020

Proceedings of the 10th Conference on Industrial Computed Tomography (iCT) 2020

METAS-CT: Metrological X-ray computed tomography at sub-micrometre precision
2020

Proceedings 20th euspen International Conference and Exhibition

Arbitrarily large iterative tomographic reconstruction on multiple GPUs using the TIGRE toolbox
2020

Journal of Parallel and Distributed Computing

Arbitrarily large tomography with iterative algorithms on multiple GPUs using the TIGRE toolbox
2020

Journal of Parallel and Distributed Computing

CT machine geometry changes under thermal load
2019

Nondestructive Testing

CT geometry determination using individual radiographsof calibrated multi-sphere standards
2019

Nondestructive Testing

Low-Cost 2D Index and Straightness Measurement System Based on a CMOS Image Sensor
2019

Sensors

AdvanCT EURAMET project, Southampton XCT scan data, EMPA sample, slow scan
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Data for 17IND08 AdvanCT "report on the traceable measurement of freeform objects"
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AdvanCT EURAMET project, Southampton XCT scan data, PTB sample, fast scan
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AdvanCT EURAMET project, Southampton XCT scan data, PTB sample, slow scan
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Example data for "Calibration of X-ray computed tomography for surface topography measurement using metrological characteristics"
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AdvanCT EURAMET project, Southampton XCT scan data, Sphere sample, fast scan
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AdvanCT EURAMET project, Southampton XCT scan data, Sphere sample, slow scan
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AdvanCT EURAMET project, Southampton XCT scan data, NPL sample, fast scan
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AdvanCT EURAMET project, Southampton XCT scan data, EMPA sample, fast scan
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Data for "Measurement of temperature induced X-ray tube transmission target displacements for dimensional computed tomography"
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AdvanCT EURAMET project, Southampton XCT scan data, NPL sample, slow scan
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Participating EURAMET NMIs and DIs
BAM (Germany)
DTI (Denmark)
FSB-LPM (Croatia)
LNE (France)
METAS (Switzerland)
MIKES (Finland)
NPL (United Kingdom)
PTB (Germany)
Other Participants
Carl Zeiss Industrielle Messtechnik GmbH (Germany)
Commissariat à l'énergie atomique et aux énergies alternatives (France)
Eidgenoessische Materialpruefungs- und Forschungsanstalt (Switzerland)
Friedrich-Alexander-Universität Erlangen - Nürnberg (Germany)
LEGO System A/S (Denmark)
Novo Nordisk A/S (Denmark)
Robert Bosch GmbH (Germany)
The University of Nottingham (United Kingdom)
University of Bath (United Kingdom)
University of Southampton (United Kingdom)
Volume Graphics GmbH (Germany)
Werth Messtechnik GmbH (Germany)
YXLON International GmbH (Germany)