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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Influence of Recurrent Overloading on the Integrity of Gas Pipes
 Gajdoš, Lubomír ; Šperl, Martin
During hydrostatic tests of gas pipelines the tested pipeline sections are also subjected to recurrent overloading depending on the type and purpose of the test. Recurrent overloading of older piping in operation, in the walls of which the occurrence of cracks cannot be excluded, may be surrounded by some uncertainties as regards their integrity, which may be damaged. On the basis of experimental results obtained on a gas pipe with artificially generated fatigue cracks the authors analysed (from the position of the latest knowledge of fracture mechanics) the conditions that result in the bursting of the ligament in front of the crack tip during recurrent overloading, and discuss the potential mechanisms of reduced fracture pressure during recurrent overloading.
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