【摘要】 采用以夹代焊的方法将高温应变片固定在应变片性能参数测试装置上,测试其在升温和降温过程中的热输出、热输出分散度、热滞后等参数。采用专用夹具以夹代焊固定高温应变片,使其在性能参数测试完后仍然能够使用,并改善高温应变片的性能,使其性能参数更加稳定,提高工程应变测试精度和可靠度。更多还原

【Abstract】 The aim of this test is to acquire accurate thermal output of high temperature strain gauges,to stabilize the thermal output performance of high temperature strain gauge,to improve measurement precision of thermal stresses with resistive high temperature strain gauge and to suggest a method of clamping instead of welding for fixture of high temperature strain gauge for thermal output measurement.Thermal output parameters including parameters like thermal output of temperature rise and drop,thermal divergence,and thermal hysteresis are measured for resistive type strain gauge with an apparatus for measurement of parameters of high temperature strain gauges.Special clamp which uses clamping instead of welding was utilized to test the thermal output so that each strain gauge could be used again with a more stable performance,better precision and lower cost for engineering projects.The conclusion was that the thermal output of high temperature strain gauge was obtained,and the method of clamping instead of welding for thermal output test is feasible.更多还原