| 摘要 |
PROBLEM TO BE SOLVED: To precisely apply a small load to a sample or repeatedly apply a load thereto. SOLUTION: One end of the sample S to be subjected to fatigue test is held by a chuck 7, and the other end is held by a chuck 8. A moving member 2 is driven in the direction of pulling the sample S by the rotation of a screw rod 5 to apply a prescribed initial load to the sample S. A sample table 3 is driven by the use of a linear motor 6 in this state so as to apply a repeated load in an arrowed direction B. Since the response to the movement of the linear motor is rapid, a quick repeated load can be given to the sample S.
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