Ratcheting-Fatigue Failure of Pressurized Elbows made of Carbon Steel
نویسندگان
چکیده
Ratcheting-fatigue investigations have been carried out to understand the ratcheting-fatigue failure of carbon manganese steel (conforming to ASME specification of SA-333 Gr.6). Experiments have been conducted on pressurized pipe-elbow assembly subjected to reversible cyclic bending, to assess the failure mechanics owing to ratcheting-fatigue synergy. These studies are required to evaluate the piping seismic design rules. These investigations have shown significant influence of the ratchet strain and non-relaxing mean stress on the low cycle fatigue life of material.
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تاریخ انتشار 2009