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X-ray backscatter sensing of defects in carbon fibre composite materials

O'Flynn, D; Crews, C; Fox, N; Allen, BP; Sammons, M; Speller, RD; (2017) X-ray backscatter sensing of defects in carbon fibre composite materials. In: Itzler, MA and Campbell, JC, (eds.) Proceedings Volume 10212, Advanced Photon Counting Techniques XI. SPIE: Anaheim, CA, USA. Green open access

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Abstract

X-ray backscatter (XBS) provides a novel approach to the field of non-destructive evaluation (NDE) in the aerospace industry. XBS is conducted by collecting the radiation which is scattered from a sample illuminated by a well-defined Xray beam, and the technique enables objects to be scanned at a sub-surface level using single-sided access, and without the requirement for coupling with the sample. Single-sided access is of particular importance when the objects of interest are very large, such as aircraft components. Carbon fibre composite materials are being increasingly used as a structural material in aircraft, and there is an increasing demand for techniques which are sensitive to the delaminations which occur in these composites as a result of both large impacts and barely visible impact damage (BVID). The XBS signal is greatly enhanced for plastics and lightweight materials, making it an ideal candidate for probing sub-surface damage and defects in carbon fibre composites. Here we present both computer modelling and experimental data which demonstrate the capability of the XBS technique for identifying hidden defects in carbon fibre.

Type: Proceedings paper
Title: X-ray backscatter sensing of defects in carbon fibre composite materials
Event: Conference on Advanced Photon Counting Techniques XI
Location: Anaheim, CA
Dates: 12 April 2017 - 13 April 2017
ISBN-13: 9781510609266
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2262581
Publisher version: http://dx.doi.org/10.1117/12.2262581
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Optics, Physics, Applied, Physics, X-ray backscatter, BVID, NDE, carbon fibre composites, Aircraft
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1560333
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