Propagating shear fracture is unique to natural gas transmission pipelines. It can propagate in extremely long distance such as several hundreds or thousands meters. Reproductive experiments for the fracture were introduced and interactive simulation between the gas decompression and the crack propagation were carried out in several cases. The simulation can predict the crack propagation and arrest in the pipelines under any design conditions in which pressure, ambient temperature, gas compositions for transmission, and material properties such as the grade, sizes and toughness of the large diameter pipes used for the pipelines. Samples for the standardization of the toughness of the pipes used were proposed and the important role of the standardization for preventing large scale failure in the pipelines was discussed.
Propagating shear fracture in natural gas transmission pipelines and material standardization
Ausbreitung von Scherbruch in Erdgaspipelines und Werkstoffstandardisierung
Titel japanisch
Journal of the Japan Institute of Metals ; 66 , 12 ; 1227-1235
2002
9 Seiten, 15 Bilder, 4 Tabellen, 10 Quellen
Article (Journal)
Japanese
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