DEVICE AND METHOD FOR TESTING THERMAL FATIGUE CRACK DEVELOPMENT, AND TEST BODY USED FOR THE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a technology capable of reproducing, experimenting on, or verifying thermal fatigue crack development accompanied with plastic deformation.;SOLUTION: A device for testing the thermal fatigue crack development includes a heating furnace capable of covering and heating the whole test body relative to a circular test body, a cooling pipe bonded to the test body, and a coolant sending mechanism for circulating a coolant into the cooling pipe. The end of the test body is bonded to the end of the cooling pipe in the heating furnace. The heating furnace includes a temperature adjuster for controlling the temperature in the heating furnace. The coolant sending mechanism includes a flow control means for controlling a sending time of the coolant and the flow rate. When a part of the inner circumference of the test body has an initial crack beforehand, a test of initial crack development is possible, and when having no initial crack, a test from initial crack generation is possible.;COPYRIGHT: (C)2008,JPO&INPIT