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Near infrared (NIR) spectral imaging for NDE
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Diamond, G. G., Hutchins, David A., Pallav, P. and Gohel, R. (2009) Near infrared (NIR) spectral imaging for NDE. In: 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Univ Chicago, Chicago, IL, July 20-25, 2008. Published in: AIP Conference Proceedings, Vol.1096 pp. 447-452. ISBN 978-0-7354-0629-2. ISSN 0094-243X. doi:10.1063/1.3114280
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Official URL: http://dx.doi.org/10.1063/1.3114280
Abstract
A novel technique of NIR imaging is presented that gives access to most of the applications currently published as being solely suitable for terahertz waves. This technique also affords the means to provide simultaneous insitu chemical-bond analysis and simultaneously combine chemical/spectral identification with imaging. The two separate features of the technique can be combined in a data fusion that produces a conventional image with chemical data etc superimposed (e.g. via false colours on the image) by imaging software. The technique itself uses NIR beams wavelengths found in ordinary domestic remote controls (circa 850 nm) and various signal recovery techniques commonly found in astronomy. This alternative technique can be realised by very simple and inexpensive electronics and is inherently far more portable and easy to use and no special sources are required. Transmission imaging results from this technique are presented from several industrial examples and various security applications and are compared and contrasted directly with their terahertz-derived counterparts. It would appear possible to very cheaply and simply emulate the performance of commercial terahertz systems at a fraction of the cost and with greatly reduced processing times. Also, unlike terahertz, this technique can penetrate bulk water and high humidity atmospheres and be used in transmission mode on biological and medical samples. To illustrate this point, several results are presented of non-ionising x-ray type images that even differentiate between separate types of soft tissue.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science > Engineering | ||||
| Series Name: | AIP Conference Proceedings | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 978-0-7354-0629-2 | ||||
| ISSN: | 0094-243X | ||||
| Editor: | Thompson, DO and Chimenti, DE | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Volume: | Vol.1096 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 447-452 | ||||
| DOI: | 10.1063/1.3114280 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 35th Annual Review of Progress in Quantitative Nondestructive Evaluation | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Univ Chicago, Chicago, IL | ||||
| Date(s) of Event: | July 20-25, 2008 |
Data sourced from Thomson Reuters' Web of Knowledge
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