Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29375
DC FieldValueLanguage
dc.contributorDepartment of Industrial and Systems Engineering-
dc.creatorMan, HC-
dc.creatorDuan, J-
dc.creatorYue, TM-
dc.date.accessioned2014-12-19T07:00:32Z-
dc.date.available2014-12-19T07:00:32Z-
dc.identifier.issn0030-3992-
dc.identifier.urihttp://hdl.handle.net/10397/29375-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.titleDynamic characteristics of gas jets from subsonic and supersonic nozzles for high pressure gas laser cuttingen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage497-
dc.identifier.epage509-
dc.identifier.volume30-
dc.identifier.issue8-
dc.identifier.doi10.1016/S0030-3992(98)00083-8-
dcterms.abstractDuring laser cutting of stainless steels, titanium and aluminum alloys, a coaxial and high pressure inert gas jet is used to improve the cut edge quality. The process normally consumes a large amount of inert gas and has a poor tolerance to variation in process parameters. This is solely because the gas nozzles are mostly of the conical and convergent type in which the gas jets are subsonic. Based on two dimensional steady state gas dynamic theory, computer simulation and shadowgraphic techniques, the gas jet patterns from conical nozzles and the newly designed supersonic nozzles are analyzed. The distribution of pressure, momentum, gas density and existence of shock waves are predicted and mapped. Based on these characteristics, the effect of the gas jets upon the cut quality is explained. It is concluded that a supersonic gas jet offers the best flow characteristics for high pressure laser cutting.-
dcterms.bibliographicCitationOptics and laser technology, 1998, v. 30, no. 8, p. 497-509-
dcterms.isPartOfOptics and laser technology-
dcterms.issued1998-
dc.identifier.isiWOS:000081020800022-
dc.identifier.scopus2-s2.0-0032201739-
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