Strain gauges MEASURING FORCES with the properties of durability and low noise under the effect of impact loads

摘要

Strain measurement sensor survivability Strength properties and low noise can be used in impact tests, such as tests of concrete beams. The sensor comprises a force-measuring bridge and an instrumentation amplifier. Force-measuring bridge is made by Wheatstone. The electric circuit of the bridge in a bridge or half-bridge by, or quarter-bridge strain gages are included. To force measuring diagonal of the bridge in the immediate vicinity by means of conductors without insulation connected instrumentation amplifier. The conductors are made of silver-plated copper. The amplifier output is connected to a computer measuring system. Strain gauge sensor has maximum values ​​readings measured force exceeding the force values ​​used during the impact, not less than ten times. The sensor has a low noise level and a long service life during repeated impact test. 1 NC and 6 h. Nos. f-ly 1 Fig.