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Comparing cone beam laminographic system trajectories for composite NDT

Comparing cone beam laminographic system trajectories for composite NDT
Comparing cone beam laminographic system trajectories for composite NDT
We compare the quality of reconstruction obtainable using various laminographic system trajectories that have been described in the literature, with reference to detecting defects in composite materials in engineering. We start by describing a laminar phantom representing a simplified model of composite panel, which models certain defects that may arise in such materials, such as voids, resin rich areas, and delamination, and additionally features both blind and through holes along multiple axes. We simulate ideal cone-beam projections of this phantom with the different laminographic trajectories, appling both Simultaneous Iterative Reconstruction Technique (SIRT) and Conjugate Gradient Least Squares (CGLS) reconstruction algorithms. We compare the quality of the reconstructions with a view towards optimising the scan parameters for defect detectability in composite NDT applications.
computed laminography, cone-beam, composites, ndt, acquisition trajectories
2214-6571
56-61
O'brien, Neil
7856f2e1-73fc-4cb9-a1f4-9b6c8b9373e7
Mavrogordato, Mark
f3e0879b-118a-463a-a130-1c890e9ab547
Boardman, Richard
5818d677-5732-4e8a-a342-7164dbb10df1
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Hawker, Sam
b5f85e14-1566-4f3f-95d8-bc1c560832cf
Blumensath, Thomas
470d9055-0373-457e-bf80-4389f8ec4ead
O'brien, Neil
7856f2e1-73fc-4cb9-a1f4-9b6c8b9373e7
Mavrogordato, Mark
f3e0879b-118a-463a-a130-1c890e9ab547
Boardman, Richard
5818d677-5732-4e8a-a342-7164dbb10df1
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Hawker, Sam
b5f85e14-1566-4f3f-95d8-bc1c560832cf
Blumensath, Thomas
470d9055-0373-457e-bf80-4389f8ec4ead

O'brien, Neil, Mavrogordato, Mark, Boardman, Richard, Sinclair, Ian, Hawker, Sam and Blumensath, Thomas (2016) Comparing cone beam laminographic system trajectories for composite NDT. Case Studies in Nondestructive Testing & Evaluation, 6 (Part B), 56-61. (doi:10.1016/j.csndt.2016.05.004).

Record type: Article

Abstract

We compare the quality of reconstruction obtainable using various laminographic system trajectories that have been described in the literature, with reference to detecting defects in composite materials in engineering. We start by describing a laminar phantom representing a simplified model of composite panel, which models certain defects that may arise in such materials, such as voids, resin rich areas, and delamination, and additionally features both blind and through holes along multiple axes. We simulate ideal cone-beam projections of this phantom with the different laminographic trajectories, appling both Simultaneous Iterative Reconstruction Technique (SIRT) and Conjugate Gradient Least Squares (CGLS) reconstruction algorithms. We compare the quality of the reconstructions with a view towards optimising the scan parameters for defect detectability in composite NDT applications.

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Neil OBrien Comparison Of Laminographic System Trajectories For Composite NDT updated - Accepted Manuscript
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More information

Accepted/In Press date: 23 May 2016
e-pub ahead of print date: 1 June 2016
Published date: November 2016
Keywords: computed laminography, cone-beam, composites, ndt, acquisition trajectories
Organisations: Engineering Mats & Surface Engineerg Gp, Signal Processing & Control Grp

Identifiers

Local EPrints ID: 395410
URI: http://eprints.soton.ac.uk/id/eprint/395410
ISSN: 2214-6571
PURE UUID: ca2a835e-51f3-424f-a3fe-38f46e7def84
ORCID for Richard Boardman: ORCID iD orcid.org/0000-0002-4008-0098

Catalogue record

Date deposited: 31 May 2016 08:34
Last modified: 21 Nov 2021 05:23

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Contributors

Author: Neil O'brien
Author: Ian Sinclair
Author: Sam Hawker

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