| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermal fatigue test method capable of suppressing generation of buckling of a thin-plate state test piece during test.SOLUTION: A thermal fatigue test method comprises: a preparation step for preparing a test piece (10); a step for acquiring a relationship between displacement and strain; and a repeat test step for repeating action of strain to the test piece (10) while performing induction heating and cooling of the test piece (10). In the preparation step, as the test piece (10), a test piece which has a curved apex (12) and a pair of bent parts (14) which are curved so as to become salient toward an opposite direction of a direction of salient of the apex (12), and in which the curvature radius of the apex (12) is smaller than that of the bent parts (14), is prepared. In the repeat test step, the action of strain to the test piece (10) is repeated so that, displacement generated on the test piece (10) corresponds to specific strain, and becomes a value determined based on the relationship, while performing induction heating and cooling to the apex part (12), and the number of the repetitions is acquired. |
