It is important to get basic understandings on early stage crack propagation behavior around the cooling holes machined in high temperature hot section components in advanced gas turbine system. For the purpose a new testing system has been developed in this work. By means of the test system the thermo-mechanical fatigue (TMF) crack propagation tests were carried out specifying a directionally solidified Ni-base superalloy specimen in which some cooling holes were introduced in the gauge section part o...
英字タイトル:
Early Growth Behavior of Crack Originated from Cooling Holes during Thermo-Mechanical Fatigue Loadings.