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dc.contributor.advisorWu, Edward M.
dc.contributor.authorRice, Christopher W.
dc.dateSeptember 1998
dc.date.accessioned2014-03-10T16:59:24Z
dc.date.available2014-03-10T16:59:24Z
dc.date.issued1998-09
dc.identifier.urihttp://hdl.handle.net/10945/39325
dc.descriptionApproved for public release; distribution is unlimited.en_US
dc.description.abstractRisk assessment of aging aircraft components can be achieved by operational de-rating using a safety factor subjectively selected from experience and heuristics. This investigation involves synthesizing currently available, maturing computer-aided methods into a format of objective quantitative risk assessment. The methodology is applied to quantify the effect of corrosion on P-3C main landing gear lower drag struts. This kind of synthesis is appropriate wherever structural operational risk is a concern. The P-3 has undergone many modifications since the 195Os and the lower drag struts are being scrapped due to internal surface corrosion. The corrosion process is random, resulting in pits varied spatially and in severity. These corrosion attributes are merged into a one random variable probability model. The casual relation of the corrosion to structural load is analyzed by finite elements. The structural configuration model input is provided by computer-aided drafting, verified by physical measurement. The effect of corrosion on current strut population reliability, as well as the future, is computed. The conclusion is that even under severe corrosion, compressive buckling is not an issue. All the other failure modes (compressive yielding, tensile yielding, and fracture by fatigue) can be assured by one cold temperature proof test.en_US
dc.format.extentx, 84, p.;28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleQuantitative structural reliability assurance through finite element analysisen_US
dc.typeThesisen_US
dc.contributor.secondreaderLindsey, Gerald H.
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.subject.authorColumn Bucklingen_US
dc.subject.authorCorrosionen_US
dc.subject.authorFinite Element Analysisen_US
dc.subject.authorProbabilityen_US
dc.subject.authorReliability Assuranceen_US
dc.subject.authorRisk Assessmenten_US
dc.description.serviceCommander (Select), United States Navyen_US
etd.thesisdegree.nameDegree of Aeronautical and Astronautical Engineeren_US
etd.thesisdegree.levelProfessional Degreeen_US
etd.thesisdegree.disciplineAeronautical Engineeringen_US
etd.thesisdegree.disciplineAstronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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