Testing of surface flatness using Schlieren setup with a movable stop

Andrianto Handojo

doi:10.1117/12.429630

13 June 2001 Testing of surface flatness using Schlieren setup with a movable stop

Andrianto Handojo

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429630
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

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.

Citation Download Citation

Andrianto Handojo "Testing of surface flatness using Schlieren setup with a movable stop", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429630

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