Measurement and modelling of pyrotechnic time delay burning rates : method and model development

dc.contributor.authorMontgomery, Yolandi C.
dc.contributor.authorFocke, Walter Wilhelm
dc.contributor.authorKelly, Cheryl
dc.contributor.emailwalter.focke@up.ac.zaen_ZA
dc.date.accessioned2017-10-24T09:23:00Z
dc.date.issued2017-10
dc.description.abstractThe burning rates of a slow reacting Mn+Sb2O3 and a fast reacting Si+Pb3O4 time delay composition, filled into lead tubes, were measured with an infrared camera, with two thermocouples and in the form of a fully assembled detonator. The infrared camera method returned values that were on average about 12 % lower than those recorded for the detonators. The temperature profiles measured for the slow burning elements were fully developed, whereas those obtained for the fast burning Si+Pb3O4 elements were not. A numerical model was developed to simulate the Mn+Sb2O3 system. Kinetic parameters were determined by least square fits to the recorded surface temperature profiles. The model made it possible to determine the effect of various property variations on the burning rate. The thermal conductivity of the delay composition was found to have the smallest impact and the heat of reaction the largest effect.en_ZA
dc.description.departmentChemical Engineeringen_ZA
dc.description.embargo2018-10-30
dc.description.librarianhj2017en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4087en_ZA
dc.identifier.citationMontgomery, Y.C., Focke, W.W. & Kelly, C. 2017, 'Measurement and modelling of pyrotechnic time delay burning rates : method and model development', Propellants, Explosives, Pyrotechnics, vol. 42, no. 10, pp. 1161-1167.en_ZA
dc.identifier.issn1521-4087 (online)
dc.identifier.issn0721-3115 (print)
dc.identifier.other10.1002/prep.201700107
dc.identifier.urihttp://hdl.handle.net/2263/62916
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article: 'Measurement and modelling of pyrotechnic time delay burning rates : method and model development', Propellants, Explosives, Pyrotechnics, vol. 42, no. 10, pp. 1161-1167, 2017. doi : 10.1002/prep.201700107. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1002/(ISSN)1521-4087.en_ZA
dc.subjectBurning rateen_ZA
dc.subjectFinite element modelingen_ZA
dc.subjectTime delayen_ZA
dc.subjectCamerasen_ZA
dc.subjectFinite element methoden_ZA
dc.subjectInfrared devicesen_ZA
dc.subjectManganeseen_ZA
dc.subjectTemperature controlen_ZA
dc.subjectTemperature indicating camerasen_ZA
dc.subjectThermal conductivityen_ZA
dc.subjectThermocouplesen_ZA
dc.subjectTiming circuitsen_ZA
dc.subjectHeat of reactionen_ZA
dc.subjectTemperature profilesen_ZA
dc.subjectSurface temperaturesen_ZA
dc.subjectModel developmenten_ZA
dc.subjectLeast square fitsen_ZA
dc.subjectInfra-red camerasen_ZA
dc.titleMeasurement and modelling of pyrotechnic time delay burning rates : method and model developmenten_ZA
dc.typePostprint Articleen_ZA

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