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dc.contributor.advisorHaugen, Bjørnnb_NO
dc.contributor.authorRiiser, Simen Økelsrudnb_NO
dc.date.accessioned2014-12-19T12:29:04Z
dc.date.available2014-12-19T12:29:04Z
dc.date.created2013-09-16nb_NO
dc.date.issued2013nb_NO
dc.identifier648739nb_NO
dc.identifierntnudaim:9523nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/241830
dc.description.abstractGeneral Electrics Oil and Gas delivers couplers for subsea applications. In orderto validate the fatigue properties on one of there products, the SX-22 coupler, afatigue assessment was desired.The seal in the coupler system is subjected to non proportional multiaxial loading,which makes traditional fatigue approaches invalid. A stress based critical planeapproach was used in order to predict the life time and location of failure in theseals being subjected to pressure cycles after being compressed at connection.Three dierent critical plane models were examined, and the results from thesefatigue calculations gave similar results.To validate the results, a physical test based on the fatigue calculations was alsoperformed. Two dierent test setups were tried, whereof one did not handle theoperation and failed. The physical test results proved to correlate well with thecritical plane fatigue assessment regarding both lifetime and where on the seal thecrack formed.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for produktutvikling og materialernb_NO
dc.titleFatigue analysis and testing of SX-22 couplersnb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber123nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for produktutvikling og materialernb_NO


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