Horn for ultrasonic fatigue testing machine and ultrasonic fatigue testing machine

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic fatigue tester which is capable of performing an accurate fatigue test by surely fixing a test piece to a horn even in the case of the test piece having a small outer diameter, and a horn for the ultrasonic fatigue tester.;SOLUTION: A test piece S is additionally provided with a screw part S1. Meanwhile, a screw hole capable of being engaged with the screw part S1 of the test piece S is formed in a lower end part of a horn 12. A test piece insertion hole 92 communicating with the screw hole is formed in a mount area for the test piece S in the lower end part of the horn 12. An inner diameter of this test piece insertion hole 92 is equal to an outer diameter of an end part S2 of the test piece S. When the test piece S is mounted to the horn 12, the screw part S1 of the test piece S is driven and engaged with the screw hole of the horn 12, so that the test piece S is fixed to the horn 12 in such a state that the end part S2 of the test piece S is inserted into the test piece insertion hole of the horn 12.;COPYRIGHT: (C)2014,JPO&INPIT