Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Towards in-process x-ray CT for dimensional metrology

Tools
- Tools
+ Tools

Warnett, Jason M., Titarenko, Valeriy, Kiraci, Ercihan, Attridge, Alex, Lionheart, William R. B., Withers, Philip J. and Williams, M. A. (2016) Towards in-process x-ray CT for dimensional metrology. Measurement Science and Technology, 27 (3). pp. 1-14. 035401. doi:10.1088/0957-0233/27/3/035401

[img]
Preview
PDF
WRAP_pdf.pdf - Published Version - Requires a PDF viewer.
Available under License Creative Commons Attribution.

Download (1646Kb) | Preview
Official URL: http://dx.doi.org/10.1088/0957-0233/27/3/035401

Request Changes to record.

Abstract

X-ray computed tomography (CT) offers significant potential as a metrological tool, given the wealth of internal and external data that can be captured, much of which is inaccessible to conventional optical and tactile coordinate measurement machines (CMM). Typical lab-based CT can take upwards of 30 min to produce a 3D model of an object, making it unsuitable for volume production inspection applications. Recently a new generation of real time tomography (RTT) x-ray CT has been developed for airport baggage inspections, utilising novel electronically switched x-ray sources instead of a rotating gantry. This enables bags to be scanned in a few seconds and 3D volume images produced in almost real time for qualitative assessment to identify potential threats. Such systems are able to scan objects as large as 600 mm in diameter at 500 mm s−1. The current voxel size of such a system is approximately 1 mm—much larger than lab-based CT, but with significantly faster scan times is an attractive prospect to explore. This paper will examine the potential of such systems for real time metrological inspection of additively manufactured parts. The measurement accuracy of the Rapiscan RTT110, an RTT airport baggage scanner, is evaluated by comparison to measurements from a metrologically confirmed CMM and those achieved by conventional lab-CT. It was found to produce an average absolute error of 0.18 mm that may already have some applications in the manufacturing line. While this is expectedly a greater error than lab-based CT, a number of adjustments are suggested that could improve resolution, making the technology viable for a broader range of in-line quality inspection applications, including cast and additively manufactured parts.

Item Type: Journal Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Tomograph, Metrology
Journal or Publication Title: Measurement Science and Technology
Publisher: Institute of Physics Publishing Ltd.
ISSN: 0957-0233
Official Date: 19 January 2016
Dates:
DateEvent
19 January 2016Published
7 December 2015Accepted
4 October 2015Submitted
Volume: 27
Number: 3
Number of Pages: 14
Page Range: pp. 1-14
Article Number: 035401
DOI: 10.1088/0957-0233/27/3/035401
Status: Peer Reviewed
Publication Status: Published
Funder: Higher Education Funding Council for England (HEFCE), Engineering and Physical Sciences Research Council (EPSRC), Royal Society (Great Britain). Wolfson Research Merit Award (RSWRMA)
Grant number: EP/K031066/1 (EPSRC), EP/M010619/1 (EPSRC)

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us