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dc.contributor.authorMulvaney-Johnson, Leigh*
dc.contributor.authorBrown, Elaine*
dc.contributor.authorCoates, Philip D.*
dc.date.accessioned2009-07-27T13:59:16Z
dc.date.available2009-07-27T13:59:16Z
dc.date.issued2007
dc.identifier.citationBrown, E.C., Mulvaney-Johnson, E.C. and Coates, P.D. (2007). Ultrasonic measurement of residual wall thickness during gas assisted injection moulding. Polymer Engineering and Science. Vol. 47, No. 11, pp. 1730-1739.en
dc.identifier.urihttp://hdl.handle.net/10454/3138
dc.descriptionNoen
dc.description.abstractUltrasonic technology provides a powerful and noninvasive method of in-process measurement during injection molding and extrusion. Changes in the velocity, attenuation and reflection coefficients of high frequency sound waves can be related to the state and conditions of the materials through which they propagate. The velocity of an ultrasonic wave changes with density and elastic moduli; this allows information on solidification and material properties to be collected during the molding cycle. The time of flight of the wave is a function of velocity and path length. This paper shows that it can be correlated with the residual wall thickness of polymer in the mold during gas assisted injection molding.en
dc.language.isoenen
dc.subjectOlefin polymeren
dc.subjectExperimental studyen
dc.subjectNon destructive methoden
dc.subjectTemperature effecten
dc.subjectThickness measurementen
dc.subjectUltrasonic methoden
dc.subjectWall thicknessen
dc.subjectProperty processing relationshipen
dc.subjectHigh density ethylene polymeren
dc.subjectGas injectionen
dc.subjectInjection moldingen
dc.titleUltrasonic measurement of residual wall thickness during gas assisted injection moulding.en
dc.status.refereedYesen
dc.typeArticleen
dc.type.versionpublished version paperen
dc.relation.urlhttp://www3.interscience.wiley.com/cgi-bin/fulltext/116325093/PDFSTART


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