Laefer, DF, Truong-Hong, L, Carr, H et al. (1 more author) (2014) Crack detection limits in unit based masonry with terrestrial laser scanning. NDT and E International, 62. 66 - 76. ISSN 0963-8695
Abstract
This paper presents the fundamental mathematics to determine the minimum crack width detectable with a terrestrial laser scanner in unit-based masonry. Orthogonal offset, interval scan angle, crack orientation, and crack depth are the main parameters. The theoretical work is benchmarked against laboratory tests using 4 samples with predesigned crack widths of 1-7 mm scanned at orthogonal distances of 5.0-12.5 m and at angles of 0 -30. Results showed that absolute errors of crack width were mostly less than 1.37 mm when the orthogonal distance varied 5.0-7.5 m but significantly increased for greater distances. The orthogonal distance had a disproportionately negative effect compared to the scan angle.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in NDT and E International. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in NDT and E International, 62, 2014, 10.1016/j.ndteint.2013.11.001 |
Keywords: | Terrestrial laser scanning; Point cloud data; Crack detection; Structural health monitoring; Condition assessment; Masonry |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Computing (Leeds) > Institute for Computational and Systems Science (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 30 Jun 2014 11:38 |
Last Modified: | 18 Jan 2018 22:22 |
Published Version: | http://dx.doi.org/10.1016/j.ndteint.2013.11.001 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ndteint.2013.11.001 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:79316 |