Moiré patterns of isopachics

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:37:39Z
dc.date.available	2014-03-01T01:37:39Z
dc.date.issued	1964	en
dc.identifier.issn	09507671	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21600
dc.title	Moiré patterns of isopachics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0950-7671/41/3/304	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0950-7671/41/3/304	en
heal.identifier.secondary	304	en
heal.publicationDate	1964	en
heal.abstract	Image interference of a grating with line rulings of a density of 500 lines per inch and its shadow is used for the determination of the surface topography in plane-stress problems. The procedure consists in using a white or monochromatic collimated light beam to illuminate the model surface. This beam is obliquely incident to the model at a known angle. A reference master grating is attached to the surface of the model and the interference pattern of this grating and its shadow, produced by the oblique light beam, is photographed in a position normal to the model. Interference patterns before and after loading of the specimen allow the determination of isopachics, which are the lines of equal thickness. The method is applied to several illustrative examples. The results obtained by experimental analysis are in good agreement with the corresponding theoretical or other experimental solutions.	en
heal.journalName	Journal of Scientific Instruments	en
dc.identifier.doi	10.1088/0950-7671/41/3/304	en
dc.identifier.volume	41	en
dc.identifier.issue	3	en
dc.identifier.spage	133	en
dc.identifier.epage	138	en