An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials

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dc.contributor.advisorBall, Anthonyen_ZA
dc.contributor.authorBarletta, Aen_ZA
dc.date.accessioned2016-11-01T10:29:57Z
dc.date.available2016-11-01T10:29:57Z
dc.date.issued1983en_ZA
dc.description.abstractThe object of the research described in this thesis was to optimise the choice of materials used for vital components of hydraulic machinery. Frequently these components are damaged by a process known as cavitation erosion and the operation and efficiency of machines are seriously impaired. Nineteen different polymers which have potential for use in hydraulic components have been eroded by liquid cavitation, employing the stationary specimen system. An attempt has been made to correlate the extent of erosion with the mechanical and chemical properties of the polymers. Modes of erosion of different materials were studied by scanning electron microscopy and a strong correlation was found between these modes and the resistance to erosion. Heterogenous polymers (mixture of two homogenous components), together with the poly amides and polyethylenes, showed the highest erosion resistances. The effect of prior immersion (3 weeks at 70°C) in either a dilute or concentrated form of hydraulic fluid has been investigated for both polyacetal and ultra high molecular weight polyethylene samples in order to simulate service conditions. The polyacetal samples showed improved erosion resistance relative to the samples stored in air or water (3 weeks at 70°C). In contrast, the ultra high molecular weight polyethylene samples failed in a catastrophic manner by solvent stress cracking.en_ZA
dc.identifier.apacitationBarletta, A. (1983). <i>An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/22388en_ZA
dc.identifier.chicagocitationBarletta, A. <i>"An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1983. http://hdl.handle.net/11427/22388en_ZA
dc.identifier.citationBarletta, A. 1983. An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Barletta, A AB - The object of the research described in this thesis was to optimise the choice of materials used for vital components of hydraulic machinery. Frequently these components are damaged by a process known as cavitation erosion and the operation and efficiency of machines are seriously impaired. Nineteen different polymers which have potential for use in hydraulic components have been eroded by liquid cavitation, employing the stationary specimen system. An attempt has been made to correlate the extent of erosion with the mechanical and chemical properties of the polymers. Modes of erosion of different materials were studied by scanning electron microscopy and a strong correlation was found between these modes and the resistance to erosion. Heterogenous polymers (mixture of two homogenous components), together with the poly amides and polyethylenes, showed the highest erosion resistances. The effect of prior immersion (3 weeks at 70°C) in either a dilute or concentrated form of hydraulic fluid has been investigated for both polyacetal and ultra high molecular weight polyethylene samples in order to simulate service conditions. The polyacetal samples showed improved erosion resistance relative to the samples stored in air or water (3 weeks at 70°C). In contrast, the ultra high molecular weight polyethylene samples failed in a catastrophic manner by solvent stress cracking. DA - 1983 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1983 T1 - An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials TI - An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials UR - http://hdl.handle.net/11427/22388 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/22388
dc.identifier.vancouvercitationBarletta A. An assessment of polymeric materials and surface treated steels as cavitation erosion resistant materials. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1983 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/22388en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMetallurgyen_ZA
dc.subject.otherMaterials Scienceen_ZA
dc.titleAn assessment of polymeric materials and surface treated steels as cavitation erosion resistant materialsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Applied Science)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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