Development and experimental validation of analytical thermal models for the evaluation of the depth of laser-treated zones

Pantelis, DI; Vonatsos, KN

dc.contributor.author	Pantelis, DI	en
dc.contributor.author	Vonatsos, KN	en
dc.date.accessioned	2014-03-01T01:13:40Z
dc.date.available	2014-03-01T01:13:40Z
dc.date.issued	1998	en
dc.identifier.issn	0947-8396	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12651
dc.subject	Experimental Validation	en
dc.subject	Thermal Model	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Approximation theory	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Heat flux	en
dc.subject.other	Laser beam effects	en
dc.subject.other	Mathematical models	en
dc.subject.other	Melting	en
dc.subject.other	Partial differential equations	en
dc.subject.other	Steel	en
dc.subject.other	Surface treatment	en
dc.subject.other	Thermal conductivity	en
dc.subject.other	Thermal diffusion	en
dc.subject.other	Fourier differential equation	en
dc.subject.other	Laser melted zone	en
dc.subject.other	Taylor series approximation	en
dc.subject.other	Heat affected zone	en
dc.title	Development and experimental validation of analytical thermal models for the evaluation of the depth of laser-treated zones	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s003390050800	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s003390050800	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	In order to estimate the depth of the heat-affected zone (HAZ) and the laser-melted zone (LMZ), during laser surface treatment, the Fourier differential equation is usually used, which is quite difficult to solve analytically for particular boundary and initial conditions. A new methodology is being proposed which leads to new formulas, estimating the heat-affected zone in the case where no melting occurs, and allows even complicated laser energy distribution profiles to be used. Specifically, Duhamel's principle is used leading to a convolution, which is integrated analytically by using a Taylor series approximation. Also, a new analytical thermal model has been developed, for the case where melting occurs, by using a moving-front approach. For both cases the calculated values of heat-affected zone and laser-melted zone are in good agreement with the experimental values. © Springer-Verlag 1998.	en
heal.publisher	SPRINGER VERLAG	en
heal.journalName	Applied Physics A: Materials Science and Processing	en
dc.identifier.doi	10.1007/s003390050800	en
dc.identifier.isi	ISI:000076721900012	en
dc.identifier.volume	67	en
dc.identifier.issue	4	en
dc.identifier.spage	435	en
dc.identifier.epage	439	en