Long-life Fatigue Design of GRP 500 Nodular Cast Iron Components.

摘要

A project on Spheroidal Cast Iron in Long-Life Design was realized in 1997 to 1999. The goal was to gain understanding of the fatigue mechanisms and obtain high cycle design information on GRP500 nodular cast iron under both constant amplitude and variable amplitude loading. All targets set at the beginning of the project have been achieved with the resources allocated. Several small but technically significant tasks have been added along the course of the project. In total 332 fatigue tests and extensive NDE studies on GRP 500 iron have been performed. The total number of fatigue cycles applied exceeded 3.10(sup9) cycles of which the majority were of variable amplitude such as may occur in rotating or reciprocating machines.