Re: removable strain gauge to measure strain in band

On Apr 8, 11:51 am, eganders <egand...@xxxxxxxxx> wrote:
How do you make a strain gauge device that measures the strain (change
in length) of a metal band by clamping the gauge device onto the metal
band.  The gauge would be an analog bridge strain gauge that would
have to have pads that allow them to be clamped on the metal band, but
the material that the gauge device was made of would have to have
little effect on the total resistance to elongation of the band, since
the band strain vs. force is what is being measured.

I know I could glue a strain gauge on the band itself to do the
measurement, but I want to be able to mount and unmount the strain
gauge on different bands.

The actual thing I am measuring is the tension in a bandsaw blade.  I
found I could buy a mechanical strain gauge to do the measurement, but
find that I can buy a used strain gauge meter for much less and if I
can make a gauge, I will have a strain gauge meter for use in other
applications.  Also, I believe it could potentially be more accurate
also.

sci.engr.mech

Sounds like you're attempting to make a clamp on strain gage based
extensometer.

Knife blade clamp on extensometers are pretty standard in the
material testing world.

I'd guess that clamp on extensometers exist for thin materials as
well.

Check out Tinius Olsen, MTS, Satec, Instron for an idea of what
exists.

Depending on how accurately you want to measure the tension, I'm sure
there are easier & cheaper ways.

cheers
Bob
.

Relevant Pages

  • Re: removable strain gauge to measure strain in band
    ... in length) of a metal band by clamping the gauge device onto the metal ... I know I could glue a strain gauge on the band itself to do the ... measurement, but I want to be able to mount and unmount the strain ...
    (sci.engr.mech)
  • Re: removable strain gauge to measure strain in band
    ... in length) of a metal band by clamping the gauge device onto the metal ... I know I could glue a strain gauge on the band itself to do the ... measurement, but I want to be able to mount and unmount the strain ...
    (sci.engr.mech)
  • removable strain gauge to measure strain in band
    ... How do you make a strain gauge device that measures the strain (change ... in length) of a metal band by clamping the gauge device onto the metal ...
    (sci.engr.mech)
  • Re: Strain gauge to measure bandsaw tension
    ... in length) of a metal band by clamping the gauge device onto the metal ... I know I could glue a strain gauge on the band itself to do the ... measurement, but I want to be able to mount and unmount the strain ...
    (sci.electronics.design)
  • Strain gauge to measure bandsaw tension
    ... How do you make a strain gauge device that measures the strain (change ... in length) of a metal band by clamping the gauge device onto the metal ...
    (sci.electronics.design)
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