Can Resistance Based Sensors Measure Beam Strength and Corrosion?

AI Thread Summary
Resistance-based sensors can effectively measure beam deflection and strain, particularly in corroded steel beams. A Wheatstone bridge configuration is suggested for accurate measurements, although the user seeks guidance on circuit diagrams and application. The discussion highlights the common alternative of using strain gauges for these measurements. Users emphasize the importance of understanding sensor outputs and proper setup. Overall, resistance-based sensors, particularly when configured correctly, can be a viable solution for assessing beam strength and corrosion effects.
E=m(C)^2
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Hey guys, I'm trying to propose an appropriate resistance based sensors to measure the deflection of a beam and the strain of the metal on the underside of the beam for an old peer with steel beams which are somewhat corroded. The system has to measure the strength of these beams.
I'm trying to include simple circuit diagrams of the sensors and how they will be set up.
I'm thinking of using a wheat-stone bridge, which has four resistors to my knowledge, but not quite sure how to apply it to the bridge or how to do the circuit diagrams. What could i expect for the output of the sensors?
Any help or advice would be much appreciated, thanks.
 
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Why not just buy a strain gauge?
 
Gokul43201 said:
Why not just buy a strain gauge?
Gokul's correct. That is the usual way to make the measurements that you are referring to:

http://en.wikipedia.org/wiki/Strain_gauge
 
Oh ok, thanks a lot guys.
 
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