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http://dx.doi.org/10.3795/KSME-A.2017.41.9.845

Residual Stress Estimation and Fatigue Life Prediction of an Autofrettaged Pressure Vessel  

Song, Kyung Jin (School of Mechanical Convergence System Engineering, Kunsan Nat'l Univ.)
Kim, Eun Kyum (School of Mechanical Convergence System Engineering, Kunsan Nat'l Univ.)
Koh, Seung Kee (School of Mechanical Convergence System Engineering, Kunsan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.9, 2017 , pp. 845-851 More about this Journal
Abstract
Fatigue failure of an autofrettaged pressure vessel with a groove at the outside surface occurs owing to the fatigue crack initiation and propagation at the groove root. In order to predict the fatigue life of the autofrettaged pressure vessel, residual stresses in the autofrettaged pressure vessel were evaluated using the finite element method, and the fatigue properties of the pressure vessel steel were obtained from the fatigue tests. Fatigue life of a pressure vessel obtained through summation of the crack initiation and propagation lives was calculated to be 2,598 cycles for an 80% autofrettaged pressure vessel subjected to a pulsating internal pressure of 424 MPa.
Keywords
Autofrettage; Overstrain Level; Pressure Vessel; Residual Stress; Finite Element Method; Fatigue Life;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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