The Library
Metrological investigation of radiation filtration in x-ray computed tomography
Tools
Tools
Tools
Kourra, Nadia, Warnett, Jason M., Attridge, Alex and Williams, M. A. (2017) Metrological investigation of radiation filtration in x-ray computed tomography. In: Instrumentation and Measurement Technology Conference (I2MTC), Torino, Italy, Italy, 22-25 May 2017. Published in: 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), pp. 1-6. ISBN 9781509035960. doi:10.1109/I2MTC.2017.7969797
|
PDF
WRAP-metrological-investigation-radiation-computed-tomography-Kourra-2017.pdf - Accepted Version - Requires a PDF viewer. Download (841Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/I2MTC.2017.7969797
Abstract
X-ray Computed Tomography (CT) is a nondestructive evaluation method that gains recognition in dimensional metrology applications. During a CT scan, 2D radiographs are collected that are then reconstructed to a 3D model which allows non-destructive evaluation of the specimen and assists with the characterisations of defects. This technology has the potential to provide information unobtainable by other non-destructive, non-contact techniques. There are numerous factors that can affect the CT measurement results with varying measurement uncertainty such as shifts and changes of x-ray focal spot, geometrical alignment issues and environmental issues. This study investigates the effect of physical pre and post filtration on the resultant dimensional measurements. Here, a calibrated specimen is used based on one of the considered designs for the proposed ISO 10360-11 CT for dimensional measurements. The resultant in local variations of grey values in the volume is measured for different thicknesses of copper filtering placed before and after the scanned specimen, and the resultant threshold dependent and independent measurements are evaluated. The results provide information that assists the selection of filtration in order to reduce measurement error and improve dimensional measurements, and also demonstrate that post filtration should be considered when scanning specimens that generate large amounts of scatter.
| Item Type: | Conference Item (Paper) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures |
||||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
| Library of Congress Subject Headings (LCSH): | Tomography, Emission, Metrology, X-rays, Imaging systems in medicine | ||||||||||
| Journal or Publication Title: | 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), | ||||||||||
| Publisher: | IEEE Computer Society | ||||||||||
| ISBN: | 9781509035960 | ||||||||||
| Book Title: | 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) | ||||||||||
| Official Date: | 7 July 2017 | ||||||||||
| Dates: |
|
||||||||||
| Page Range: | pp. 1-6 | ||||||||||
| DOI: | 10.1109/I2MTC.2017.7969797 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Funder: | BAE SYSTEMS (Firm), Engineering and Physical Sciences Research Council (EPSRC) | ||||||||||
| Conference Paper Type: | Paper | ||||||||||
| Title of Event: | Instrumentation and Measurement Technology Conference (I2MTC) | ||||||||||
| Type of Event: | Conference | ||||||||||
| Location of Event: | Torino, Italy, Italy | ||||||||||
| Date(s) of Event: | 22-25 May 2017 |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
