Wheatstone bridge/ strain gauge question

Click For Summary
SUMMARY

The discussion centers on measuring the strain of wood due to temperature changes using a Wheatstone bridge and strain gauges. The user intends to employ two strain gauges: one for measuring strain and another as a dummy gauge to negate thermal effects. The proposed equation for calculating strain is 4(Vout/vexternal)/Gauge factor = strain, which requires validation and proper integration into the Wheatstone bridge setup for accurate results.

PREREQUISITES
  • Understanding of Wheatstone bridge configurations
  • Knowledge of strain gauge operation and gauge factor
  • Familiarity with electrical resistance measurement techniques
  • Basic principles of temperature effects on materials
NEXT STEPS
  • Research Wheatstone bridge circuit design and applications
  • Learn about strain gauge calibration methods
  • Explore temperature compensation techniques for strain measurements
  • Study the mathematical derivation of strain from Wheatstone bridge outputs
USEFUL FOR

Engineers, researchers, and students involved in materials testing, structural analysis, and sensor technology who need to accurately measure strain in materials under varying temperature conditions.

infernal
Messages
2
Reaction score
0
Need to do an experiment where I masure the strain of wood due to changes in temperature. I believe I need to use 2 strain gauges, one to measure the strain and the other to act as a dummy to cancel out any affects that heating will have on the strain gauge. I also know that a wheatstone bridge needs to be used to find out the very small changes in resistance. What I don't know is how to link all that together to get some results of strain.

Does anyone know how I can put my strain gauges into the wheat stone bridge equation to come up with a value of strain? I think it will look something like this:

4(Vout/vexternal)/Gauge factor = strain


Is it right?

Many thanks!
 
Physics news on Phys.org
nobody can help me, it's really important I get this equation right?
 

Similar threads

How to connect this strain gauge?
  • · Replies 77 ·
3
Replies
77
Views
6K
Undergrad The multimeter is not displaying mv of strain gauge in circuit
  • · Replies 19 ·
Replies
19
Views
3K
Strain gauges and Wheatstone bridges
  • · Replies 6 ·
Replies
6
Views
1K
Instrumentation Amplifier for Wheatstone Bridge Output
  • · Replies 27 ·
Replies
27
Views
4K
Wheatstone bridge with four active strain gauges - extension cable length compensation formula
  • · Replies 8 ·
Replies
8
Views
2K
High School Is a 0.040V Reading on a Strain Gauge Before Force Applied Acceptable?
  • · Replies 3 ·
Replies
3
Views
2K
How do I use full-bridge strain gauge circuit to measure F?
  • · Replies 2 ·
Replies
2
Views
3K
Is strain uniform in a material?
  • · Replies 7 ·
Replies
7
Views
2K
Can a reed switch use a wheatstone bridge/potential divider?
  • · Replies 1 ·
Replies
1
Views
2K
How to connect strain gauge in the form of wheatstone bridge
  • · Replies 3 ·
Replies
3
Views
3K