| 摘要 |
PURPOSE:To achieve a tensile test of material of low elasticity at an high accuracy with a simple mechanism by directly measuring the movement of a measuring base, namely, the strain of a sample with a digital scale. CONSTITUTION:A digital scale 18 comprises a scale unti 19 fixed on the vertical side wall 2 side of a frame 1 and a ceramic head 20 fixed on the measuring base 7 side. When conducting a tensile test, a sample T is grasped at both ends thereof with chucks 15 and 17 provided onthe top plate 3 and a load cell 16 and the measuring base 7 lowers with a driving mechanism 9. At this point, the stress is detected with the load cell 15 while a magnetic singal recorded on a metal bar in the scale unit 19 is read with a magnetic head 20 thereby measuring the movement of the measuring base 7, namely, the strain of the sample T. These measured values are displayed on an indicator and recorded with a recorder. Such direct measurement of the strain of the sample with the digital scale enables the tensile test at a high accuracy with a simple mechanism. |
