| 摘要 |
PROBLEM TO BE SOLVED: To provide a tensile and compression test device for a thin steel plate test piece having a plate thickness of approximately several millimeters, excellent in economical efficiency and capable of highly accurately measuring a strain.SOLUTION: A tensile and compression test method comprises: setting a relationship between a test part length L and width W of a test piece 1 to be L/W≥4.0; setting a test part shoulder R to be R≤2.0 mm; fixing an extensometer 2 to extensometer holding metal fittings 11 joined to a side surface of the test piece 1 by resistance welding, using an elastic body 10; applying an adhesive onto a contact portion between the measurement part of the extensometer 2 and the side surface of the test piece 1; sandwiching the test piece 1 from both thickness-direction sides with a buckling prevention jig 7 and a buckling prevention base jigs 3 and 4; driving an actuator so as to be constant in a stroke speed while a spring generates a force resisting buckling; and repeating the loading test to the test part using the output of the extensometer 2 as a target value. |
