TY - JOUR
T1 - Pressure Cycle Testing of Cr-Mo Steel Pressure Vessels Subjected to Gaseous Hydrogen
AU - Yamabe, Junichiro
AU - Itoga, Hisatake
AU - Awane, Tohru
AU - Matsuo, Takashi
AU - Matsunaga, Hisao
AU - Matsuoka, Saburo
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Pressure cycle tests were performed on two types of Cr-Mo steel pressure vessels with notches machined on their inside under hydrogen-gas pressures, between 0.6 and 45 MPa at room temperature. Fatigue crack growth (FCG) and fracture toughness tests of the Cr-Mo steels samples from the vessels were also carried out in gaseous hydrogen. The Cr-Mo steels showed accelerated FCG rates in gaseous hydrogen compared to ambient air. The fracture toughness of the Cr-Mo steels in gaseous hydrogen was significantly smaller than that in ambient air. Four pressure vessels were tested with gaseous hydrogen. All pressure vessels failed by leak-before-break (LBB). The LBB failure of one pressure vessel could not be estimated by using the fracture toughness in gaseous hydrogen KIC,H; accordingly, the LBB assessment based on KIC,H is conservative and there is a possibility that KIC,H does not provide a reasonable assessment of LBB. In contrast, the fatigue lives of all pressure vessels could be estimated by using the accelerated FCG rates in gaseous hydrogen.
AB - Pressure cycle tests were performed on two types of Cr-Mo steel pressure vessels with notches machined on their inside under hydrogen-gas pressures, between 0.6 and 45 MPa at room temperature. Fatigue crack growth (FCG) and fracture toughness tests of the Cr-Mo steels samples from the vessels were also carried out in gaseous hydrogen. The Cr-Mo steels showed accelerated FCG rates in gaseous hydrogen compared to ambient air. The fracture toughness of the Cr-Mo steels in gaseous hydrogen was significantly smaller than that in ambient air. Four pressure vessels were tested with gaseous hydrogen. All pressure vessels failed by leak-before-break (LBB). The LBB failure of one pressure vessel could not be estimated by using the fracture toughness in gaseous hydrogen KIC,H; accordingly, the LBB assessment based on KIC,H is conservative and there is a possibility that KIC,H does not provide a reasonable assessment of LBB. In contrast, the fatigue lives of all pressure vessels could be estimated by using the accelerated FCG rates in gaseous hydrogen.
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U2 - 10.1115/1.4030086
DO - 10.1115/1.4030086
M3 - Article
AN - SCOPUS:84940391807
SN - 0094-9930
VL - 138
JO - Journal of Pressure Vessel Technology, Transactions of the ASME
JF - Journal of Pressure Vessel Technology, Transactions of the ASME
IS - 1
M1 - 011401
ER -