| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device which provide high workability and are economically efficient without buckling deformation and reduction in measurement accuracy in a tensile and compression test of a thin steel sheet specimen having a thickness of about several millimeters.SOLUTION: A length L and a width W of a test part of a specimen 1 are set to satisfy L/W≥4.0, and a test part shoulder R is set to satisfy R≤2.0 mm. An extensometer 2 is fixed to an extensometer holding fitting 11 joined to a side surface of the specimen 1 by resistance-welding, by an elastic member 10, and the specimen 1 is held between a buckling prevention jig 7 and buckling prevention base jigs 3 and 4 on both sides in a thickness direction of the specimen 1, and in a state where a force resisting buckling is generated by a spring 9A, the test part is subjected to repeated loading test from tension to compression or from compression to tension. |
