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dc.contributor.authorSkinner, Daniel B.en_US
dc.date.accessioned2014-03-14T21:31:40Z
dc.date.available2014-03-14T21:31:40Z
dc.date.issued1995en_US
dc.identifier.otheretd-03142009-040544en_US
dc.identifier.urihttp://hdl.handle.net/10919/41602
dc.description.abstractMicrowave heating has been considered for the heating of a coating in contact with a temperature-sensitive substrate. A methodology was developed to conduct a microwave heating feasibility study for a candidate system. The study consisted of dielectric property determination, development of heat transfer models to determine the heat generation rates necessary to achieve a desired temperature distribution, calculation of the required electric field strength given the dielectric properties and heat generation rates, and examination of whether the microwave heating could be performed with available equipment. Sol-gel processing of a 1Microwave heating has been considered for the heating of a coating in contact with a temperature-sensitive substrate. A methodology was developed to conduct a microwave heating feasibility study for a candidate system. The study consisted of dielectric property determination, development of heat transfer models to determine the heat generation rates necessary to achieve a desired temperature distribution, calculation of the required electric field strength given the dielectric properties and heat generation rates, and examination of whether the microwave heating could be performed with available equipment. Sol-gel processing of a 1µm-thick boehmite coating on a non-woven polypropylene substrate was chosen as the candidate system. It was desired to selectively heat the boehmite to 2500 C without damaging the polypropylene, which degrades at 1500 C. Dielectric measurements indicated that the boehmite could be heated to 2500 C using microwave energy. Microwave heating of the system was then modeled using three techniques: an approximate analytical solution based on Composite Green's Functions, a finite difference solution, and an approximate lumped capacitance solution. It was determined that the heat generation rates necessary to produce the desired temperature distribution would require field strengths beyond practical limitations for the specific boehmite-polypropylene system considered. -thick boehmite coating on a non-woven polypropylene substrate was chosen as the candidate system. It was desired to selectively heat the boehmite to 2500 C without damaging the polypropylene, which degrades at 1500 C. Dielectric measurements indicated that the boehmite could be heated to 2500 C using microwave energy. Microwave heating of the system was then modeled using three techniques: an approximate analytical solution based on Composite Green's Functions, a finite difference solution, and an approximate lumped capacitance solution. It was determined that the heat generation rates necessary to produce the desired temperature distribution would require field strengths beyond practical limitations for the specific boehmite-polypropylene system considered.en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1995.S555.pdfen_US
dc.subject.lccLD5655.V855 1995.S555en_US
dc.titleMicrowave heating of a coating on a temperature-sensitive substrateen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairStern, Curtis H.en_US
dc.contributor.committeememberScott, Elaine P.en_US
dc.contributor.committeememberVick, Brianen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03142009-040544/en_US
dc.date.sdate2009-03-14en_US
dc.date.rdate2009-03-14
dc.date.adate2009-03-14en_US


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