Rayleigh waves generated by a thermal source: A three-dimensional transient thermoelasticity solution

Georgiadis, HG; Lykotrafitis, G

dc.contributor.author	Georgiadis, HG	en
dc.contributor.author	Lykotrafitis, G	en
dc.date.accessioned	2014-03-01T01:23:00Z
dc.date.available	2014-03-01T01:23:00Z
dc.date.issued	2005	en
dc.identifier.issn	0021-8936	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16764
dc.subject	Rayleigh Waves	en
dc.subject	Three Dimensional	en
dc.subject.classification	Mechanics	en
dc.subject.other	Heat generation	en
dc.subject.other	Normal displacement	en
dc.subject.other	Rayleigh waves	en
dc.subject.other	Thermal source	en
dc.subject.other	Bessel functions	en
dc.subject.other	Friction	en
dc.subject.other	Heat flux	en
dc.subject.other	Laplace transforms	en
dc.subject.other	Laser applications	en
dc.subject.other	Surface waves	en
dc.subject.other	Thermomechanical treatment	en
dc.subject.other	Thermoelasticity	en
dc.title	Rayleigh waves generated by a thermal source: A three-dimensional transient thermoelasticity solution	en
heal.type	journalArticle	en
heal.identifier.primary	10.1115/1.1825438	en
heal.identifier.secondary	http://dx.doi.org/10.1115/1.1825438	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	A three-dimensional transient thermoelastic solution is obtained for Rayleigh-type disturbances propagating on the surface of a half-space. These surface waves are generated by either a buried or surface thermal source, which has the form of a concentrated heat flux applied impulsively. In an effort to model this problem as realistically as possible, the half-space material is taken to respond according to Blot's fully coupled thermoelasticity. The problem has relevance to situations involving heat generation due to: (i) laser action (impulsive electromagnetic radiation) on a surface target, (ii) underground nuclear activity, and (iii) friction developed during underground fault motions related to seismic activity. The problem was attacked with unilateral and double bilateral Laplace transforms, which suppress, respectively, the time variable and two of the space variables. The Rayleigh wave contribution is obtained as a closed-form expression by utilizing asymptotics, complex-variable theory and certain results for Bessel functions. The dependence of the normal displacement associated with the Rayleigh wave upon the distance from the source epicenter and the distance from the wavefront is also determined. Copyright © 2005 by ASME.	en
heal.publisher	ASME-AMER SOC MECHANICAL ENG	en
heal.journalName	Journal of Applied Mechanics, Transactions ASME	en
dc.identifier.doi	10.1115/1.1825438	en
dc.identifier.isi	ISI:000227098100014	en
dc.identifier.volume	72	en
dc.identifier.issue	1	en
dc.identifier.spage	129	en
dc.identifier.epage	138	en