Slope measurement by means of moiré fringes

Theocaris, PS; Koutsabessis, A

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Koutsabessis, A	en
dc.date.accessioned	2014-03-01T01:37:40Z
dc.date.available	2014-03-01T01:37:40Z
dc.date.issued	1965	en
dc.identifier.issn	09507671	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21606
dc.title	Slope measurement by means of moiré fringes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0950-7671/42/8/330	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0950-7671/42/8/330	en
heal.identifier.secondary	330	en
heal.publicationDate	1965	en
heal.abstract	A simple method is described for the measurement of partial slopes of flat surfaces. A line reference grating is projected by means of a collimated monochromatic light beam on to the deformed lateral surface of a plane specimen loaded on its own plane. Moiré fringes formed by the projection of the resultant distorted image of the grating into an identical grating yield the partial slope contours of the specimen in a direction normal to the direction of the rulings of the gratings. The method is used to determine the gradients of the sum of principal stresses of plane elastic problems and gradients of the lateral strain in the case of plane stress plasticity problems. Integration along any traverse of the specimen yields readily either the sum of principal stresses or the lateral strain distribution.	en
heal.journalName	Journal of Scientific Instruments	en
dc.identifier.doi	10.1088/0950-7671/42/8/330	en
dc.identifier.volume	42	en
dc.identifier.issue	8	en
dc.identifier.spage	607	en
dc.identifier.epage	610	en