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Influence of common transparent materials on the accuracy of image-based velocimetry

Hirsch, Damian and Graff, Emilio C. and Pereira, Francisco and Gharib, Morteza (2015) Influence of common transparent materials on the accuracy of image-based velocimetry. Measurement Science and Technology, 26 (8). Art. No. 087002. ISSN 0957-0233. http://resolver.caltech.edu/CaltechAUTHORS:20141118-101533332

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Abstract

We discuss the performance of commonly available architectural window materials with respect to the accuracy of optical measurements (e.g. metrology from images, particle image velocimetry, direct image correlation, etc). Window samples were examined for flatness/homogeneity and their performance was quantified by their effect on measurements taken by a three-dimensional velocimetry system. Optical glass performed the best, but also annealed normal and annealed low iron glasses are good, economical options. Plastic-based windows can suffer from damage by laser beams and are only an option if illumination is less important. Polycast acrylic is the best choice within this specific group.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0957-0233/26/8/087002DOIArticle
http://iopscience.iop.org/0957-0233/26/8/087002/articlePublisherArticle
Additional Information:© 2015 IOP Publishing Ltd. Received 13 October 2014, accepted for publication 8 April 2015. Published 2 July 2015. The authors would like to thank J Kent Wallace from the Jet Propulsion Laboratory (JPL) for performing the Zygo tests of the window samples.
Group:GALCIT
Subject Keywords:window quality, accuracy, precision, transparent material, image-based, velocimetry
Classification Code:PACS: 06.30.Gv; 42.30.Va; 42.70.Ce; 07.60.Ly.
Record Number:CaltechAUTHORS:20141118-101533332
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141118-101533332
Official Citation:Influence of common transparent materials on the accuracy of image-based velocimetry Damian Hirsch et al 2015 Meas. Sci. Technol. 26 087002
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51894
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:22 Jul 2015 21:33
Last Modified:30 Sep 2016 17:35

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