Hello,
I am a student working on strain measurements on axially loaded steel sections.
For this work, Ni compact Rio and NI 9237 module are being used. A labview code interacts with the system to record the strain from electric strain gauges. The steel section has a full bridge setup in the axial direction.
The question i am not sure about is,
what data is being recorded without any calculations done in NI codes? is it,
1. voltage difference across the bridge (or)
2. mV/V (i.e. Vo / Vex)
To calculate the mechanical strain, can I use this formula if its mV/V, which is for Full bridge type 3 configuration.
strain, ε= (-2Vr) / (GF [(ν – 1) – Vr (ν + 1 )] , where Vr is the mV/V
How can I convert to mechanical strain if its difference across the bridge.
Thanks for the response.
