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- W2362244840 abstract "After analyzing the working cycles of the PEEK poppet of deep-sea hydrothermal sampling valves working in extreme temperature and pressure conditions,this work proposed an analytical method to predict the fatigue life of the PEEK poppet under varying working pressure with a maximum value of 70 MPa.The geometrical dimensions,stress concentration and loading styles of the PEEK poppet were comprehensively considered.By applying the traditional nominal stress method,the stress-fatigue life curve of the PEEK poppet during working cycles was obtained using the stress-fatigue life curve of the PEEK material.Then the fatigue life was estimated with the fatigue cumulative damage rule.A test rig was designed to imitate the sampling process,and the fatigue tests were performed on several poppets in the same manufacture series.The test results were consistent and agreed well with the analytical results.The fatigue life of the PEEK poppet is 7 cycles under the working condition,and the fatigue failure of the poppet accords with the fatigue cumulative damage rule." @default.
- W2362244840 created "2016-06-24" @default.
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- W2362244840 date "2010-01-01" @default.
- W2362244840 modified "2023-09-25" @default.
- W2362244840 title "Fatigue life of PEEK poppet for deep-sea hydrothermal fluid sampling valve" @default.
- W2362244840 hasPublicationYear "2010" @default.
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