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dc.contributor.authorRao, Shashien
dc.date.accessioned2014-03-14T21:31:40Zen
dc.date.available2014-03-14T21:31:40Zen
dc.date.issued1990en
dc.identifier.otheretd-03142009-040610en
dc.identifier.urihttp://hdl.handle.net/10919/41607en
dc.description.abstractThis study can be classified under the subject of equipment item replacement analysis. Simultaneous failure, SF, of the components of an equipment item, EI, is the topic of this thesis. Examination of the possibility of designing components of an EI for SF is one objective of the study. The motive for this objective is the belief that SF designs of EI minimize the total cost of acquiring and operating the EI. Examination of the strength of materials reveals that design life of components is not sufficiently flexible to realize SF, and design requirements can predetermine design life. This is true for mechanical components such as links, gears, and bearings. Hence it was concluded that SF of the mechanical components of an EI, cannot be easily achieved. The second objective of the study was to formulate a model for optimizing the design of the components of an EI with life considerations. A mechanical reliability model was first modified by the inclusion of fatigue stress-strength relationships, and the theory of Cumulative Damage. By mathematical manipulation to suit the principles of Lagrange's Method of Undetermined Multipliers, an optimization model has been developed. This model enables system and component design constraints and requirements to be included in the optimization process.en
dc.format.extentviii, 100 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.isformatofOCLC# 23116747en
dc.relation.haspartLD5655.V855_1990.R366.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1990.R366en
dc.subject.lcshFailure time data analysisen
dc.subject.lcshReplacement of industrial equipment -- Analysisen
dc.titleSome studies in simultaneous failure in equipment itemsen
dc.typeThesisen
dc.contributor.departmentIndustrial Engineering and Operations Researchen
dc.description.degreeMaster of Scienceen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelmastersen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineIndustrial Engineering and Operations Researchen
dc.type.dcmitypeTexten
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03142009-040610/en
dc.date.sdate2009-03-14en
dc.date.rdate2009-03-14en
dc.date.adate2009-03-14en


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