Advanced FBG Sensor Technique to Measure Effective Chemical Shrinkage and Modulus Evolutions of Polymers with High Polymerization Exothermic Heat

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dc.contributor.advisorHan, Bongtaeen_US
dc.contributor.authorKim, Yejinen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2013-02-06T07:32:30Z
dc.date.available2013-02-06T07:32:30Z
dc.date.issued2012en_US
dc.description.abstractAn advanced technique based on a fiber Bragg grating (FBG) sensor is proposed to measure the critical mechanical properties of polymeric materials during polymerization: effective chemical shrinkage and modulus evolutions. Based on the existing technique implemented with convection oven and two different specimen configurations using same size of FBG, challenges associated with implementation are identified and solutions are proposed. Challenges include temperature instability due to high exothermic heat generated during polymerization inside polymer substrate, temperature controllability due to limitations of convection oven, and mechanical constrain on polymer and fiber during measurement. The proposed system provides modifications to provide easier implementation with accurate results. Modifications such as fabrication of FBG on special fiber, enhancement of heating system, and optimization of system design are combined to provide a tool for rapid but accurate measurement of polymer properties. The proposed technique significantly improves the ability to characterize the mechanical properties of polymeric materials during polymerization which will enhance the accuracy of predictive modeling for design optimization of a microelectronics product at the conceptual stage of product development.en_US
dc.identifier.urihttp://hdl.handle.net/1903/13579
dc.subject.pqcontrolledMechanical engineeringen_US
dc.subject.pquncontrolledCuring propertiesen_US
dc.subject.pquncontrolledEffective chemical shrinkage evolutionen_US
dc.subject.pquncontrolledFBGen_US
dc.subject.pquncontrolledModulus evolutionen_US
dc.subject.pquncontrolledPolymeren_US
dc.subject.pquncontrolledPolymerization exothermic heaten_US
dc.titleAdvanced FBG Sensor Technique to Measure Effective Chemical Shrinkage and Modulus Evolutions of Polymers with High Polymerization Exothermic Heaten_US
dc.typeThesisen_US

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