| 摘要 |
<p>A capacitive extensometer (60) has an extensometer frame formed of a pair of arms (61, 62) having first ends with specimen contacting members (73) and which are arms (61, 62) connected together about a hinge axis (72) at second remote ends. The specimen contacting members (73) engage the surfaces of a specimen (74) to be tested. A capacitive type sensing arrangement (100) is mounted on the arms, and is used with conventional circuitry for determining arm motion. The sensing members (106, 115) are located to insure adequate output, and can be located to the exterior of the periphery of the extensometer arm assembly. The ability to mount the capacitor sensor (100) appropriately, while obtaining a relatively large output signal enhances the operability the extensometer (60).</p> |
