Method for monitoring damage to a shaft
A damage and deformation technology, applied in the field of monitoring the damage of the shaft, can solve the problem of not directly detecting the damage of the shaft
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[0024] figure 1 A device 10 for monitoring damage to a shaft is shown. The device 10 includes a strain gauge R S , the strain gauge is shown here as a resistor. Strain gauge R S Together with the other three resistors R1, R2 and R3 are connected according to a Wheatstone bridge. The supply voltage U of the voltage supply system 12 S supplied to the bridge circuit. Strain gauge R S The measurement signal U b The bridge voltage, which can be used as a measuring bridge, is tapped.
[0025] Several strain gauges R can likewise be arranged on axes not shown here S . Strain gauge R S For example, it can be formed as a resistive wire on a foil. Strain gauge R S Can be made of metal or of semiconductor. Strain gauge R S It is preferably mounted on the outer surface of the shaft with a special adhesive. Because of the mechanical deformation of the shaft, the strain gauge R S mechanical deformation. Due to mechanical deformation the strain gauge R S resistance changes....
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