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Ring tests on high density polyethylene : full investigation assisted by finite element modeling

Abstract : In order to characterize the mechanical behavior of HDPE pipes, the ASTM D 2290-04 standard recommends carrying out tensile tests on notched rings, cut out from the pipe. This very simple test is also utilized to investigate the aging effect of the pipe by determining the strain at failure. Comparison between full ring and notched ring mechanical responses are discussed. Constitutive modeling including strain rate effects was performed by finite element analysis. This allowed a better understanding of the stress state in the cross section perpendicular to the loading direction. Additionally, the influence of a thin layer of oxidized HDPE in the inner wall of the ring was studied in the light of the finite element results.
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Lucien Laiarinandrasana, Clémence Devilliers, S. Oberti, E. Gaudichet-Maurin, B. Fayolle, et al.. Ring tests on high density polyethylene : full investigation assisted by finite element modeling. International Journal of Pressure Vessels and Piping, 2011, 88 (1), pp.1-10. ⟨10.1016/j.ijpvp.2010.12.002⟩. ⟨hal-00565851⟩

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