×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Torsion Strain measurements: wireless?
2

Torsion Strain measurements: wireless?

Torsion Strain measurements: wireless?

(OP)
I want to measure strain realtime on a 6" diameter rotating shaft. I was thinking it would be nice if there was a strain gauge system that could use radio frequency (go bluetooth) to transmit the volatage output data from my full wheatstone bridge to a storage medium. Does any one know of a product out there that can do this?

RE: Torsion Strain measurements: wireless?

Check with MicroMeasurements in Raleigh, NC or with Analog Devices.  I have seen a device advertised, but don't remember where.  I have used products from both of these companies and their product lines are pretty extensive so you might find something there.

Have you considered photo-stress measurements?

I have done torque measurements with conventional wire connected strain gauges, but obviously done with compromise since you can only wrap so much wire around the shaft before it unwinds and rips your gauges off!!

RE: Torsion Strain measurements: wireless?

I used a FM/FM telemetry system to measure strain and torque on rotating propeller shafts. The instrument was made by PMC out of Florida.  You should still be able to rent it complete with transmitter and receiver.  I think Intertechnoloy http://www.intertechnology.com/Lebow_Rotating_Torque_Sensors.html sells this product line.

The system worked OK, although we did have problems with dropouts at different shaft positions, and with signal drift.  The PMC system works on the FM broadcast band, so it is important to stay away from strong radio stations, etc.  This was a bit of a problem on marine vessels.

There are other systems out there, I will post if I find it.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources