Effect of Injection Rate and Post-Fill Cure Pressure on Properties of Resin Transfer Molded Disks

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dc.contributor.authorKristian A. Olivero
dc.contributor.authorHarry J. Barraza
dc.contributor.authorEdgar A. O’Rear
dc.contributor.authorM. Cengiz Altan
dc.date.accessioned2016-01-14T19:52:41Z
dc.date.accessioned2016-03-30T15:33:39Z
dc.date.available2016-01-14T19:52:41Z
dc.date.available2016-03-30T15:33:39Z
dc.date.issued2002-08-01
dc.description.abstractThe effects of flow rate andpost-fill cure pressure, i.e., packing pressure, on the mechanical properties of resin transfer molded disks are experimentally investigated. An experimental molding setup is constructed to fabricate fiber-reinforced, center-gated, disk-shaped composite parts. Disks are molded at different flow rates and packing pressures in order to observe the effects of these parameters on the mechanical properties andvoidcontent of the final parts. Specimens are cut from three different locations in the molded disks for testing. Specimens from the first two locations are tensile testedto obtain strength and stiffness properties, and the third location is usedfor microscopic analysis to determine void content and void properties. Increased injection rate is found to reduce both the strength and stiffness of the molded parts due to more voids induced by the faster moving fluidfront. Packing pressure is also foundto have a significant effect on specimen properties. At higher packing pressures fewer voids and improved strength andstiffness are observed. Mechanical properties are correlatedwith total void fraction for disks molded at different packing pressures. Exponential decrease in both tensile strength andelastic modulus is observedwith increasing voidfraction. Doubling the voidvolume fraction from 0.35 to 0.72% results in a 15% decrease in strength and a 14% decrease in stiffness. The results demonstrate that selection of suitable injection rate and addition of packing pressure to resin transfer molding (RTM) process can improve mechanical properties of molded parts considerably.en_US
dc.description.peerreviewYesen_US
dc.description.peerreviewnoteshttps://us.sagepub.com/en-us/nam/manuscript-submission-guidelinesen_US
dc.identifier.citationOlivero, K. A., Barraza, H. J., O’Rear, E. A., & Altan, M. C. (2002). Effect of Injection Rate and Post-Fill Cure Pressure on Properties of Resin Transfer Molded Disks. Journal of Composite Materials, 36(16), 2011-2028. doi: 10.1177/0021998302036016244en_US
dc.identifier.doi10.1177/0021998302036016244en_US
dc.identifier.urihttp://hdl.handle.net/11244/24853
dc.language.isoen_USen_US
dc.publisherJournal of Composite Materials
dc.rights.requestablefalseen_US
dc.subjectresin transfer moldingen_US
dc.subjectpacking pressureen_US
dc.subjectvoidsen_US
dc.subjectinjection rateen_US
dc.titleEffect of Injection Rate and Post-Fill Cure Pressure on Properties of Resin Transfer Molded Disksen_US
dc.typeResearch Articleen_US

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