The cause of the uncertainty of the elastic limit

Prohaszka, J; Mamalis, AG; Gaal, Z

dc.contributor.author	Prohaszka, J	en
dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Gaal, Z	en
dc.date.accessioned	2014-03-01T01:58:50Z
dc.date.available	2014-03-01T01:58:50Z
dc.date.issued	2009	en
dc.identifier.issn	17555817	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28746
dc.subject	Anisotropy	en
dc.subject	Elastic limit	en
dc.subject	Elastic modulus	en
dc.subject	Plastic deformation	en
dc.subject	Polycrystalline material	en
dc.subject	Shear stress	en
dc.subject.other	Elastic limit	en
dc.subject.other	Engineering practices	en
dc.subject.other	Material property	en
dc.subject.other	Metallic material	en
dc.subject.other	Yield strength	en
dc.subject.other	Anisotropy	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Materials	en
dc.subject.other	Photoresists	en
dc.subject.other	Plastic deformation	en
dc.subject.other	Shear stress	en
dc.subject.other	Single crystals	en
dc.subject.other	Strength of materials	en
dc.subject.other	Surface properties	en
dc.subject.other	Surface roughness	en
dc.subject.other	Polycrystalline materials	en
dc.title	The cause of the uncertainty of the elastic limit	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.cirpj.2009.09.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.cirpj.2009.09.002	en
heal.publicationDate	2009	en
heal.abstract	The uncertainty of the elastic limit of metallic materials may cause inconvenience for the designers, therefore, the conventional yield strength is used for dimensioning in engineering practice. Today, it is not yet possible to measure the elastic limit with acceptable accuracy, since the elastic limit of every sample varies, due to the microstructure of polycrystalline materials. In this paper we try to confirm that the elastic limit can be considered only as a theoretical material property and to determine the reason for the uncertainty of the elastic limit. We found that the anisotropy of the elastic modulus very strongly influences the uncertainty of the elastic limit of the materials. These uncertainties cause problems during manufacturing, for instance in cases where the surface roughness is an important requirement, because the quality of the surface roughness is degraded by this phenomenon. © 2009 CIRP.	en
heal.journalName	CIRP Journal of Manufacturing Science and Technology	en
dc.identifier.doi	10.1016/j.cirpj.2009.09.002	en
dc.identifier.volume	2	en
dc.identifier.issue	1	en
dc.identifier.spage	70	en
dc.identifier.epage	74	en