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Proceedings Paper

Testing of surface flatness using Schlieren setup with a movable stop
Author(s): Andrianto Handojo
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Paper Abstract

A simple yet effective schlieren technique to observe and obtain quantitative information of surface flatness is described. Basically, in schlieren method the object to be tested is imaged using a parallel beam illumination. At the focal point of a positive imaging lens or mirror, a stop is inserted to pass only those rays that correspond to some deviation in the object. In this way the deviation can be displayed as a light and dark pattern on the observation plane. However, quantitative interpretation is difficult since the single display is fixed by the stop dimension.

Paper Details

Date Published: 13 June 2001
PDF: 4 pages
Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); doi: 10.1117/12.429630
Show Author Affiliations
Andrianto Handojo, Bandung Institute of Technology (Indonesia)

Published in SPIE Proceedings Vol. 4317:
Second International Conference on Experimental Mechanics
Fook Siong Chau; Chenggen Quan, Editor(s)

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