Do you know How to Measure strain?

We all know about stress and stain and and its relation. But have you ever know about the measurement of Strain. please comment your valuable response.

The strain gauge is fundamental of many type of sensors like pressure sensors, load cells, torque sensors etc.

The most common form of strain gauge is the electrical resistance strain gauge.

The gauges are formed by either a length of wire arranged in an axial grid pattern or by etching a thin metal foil into the desired shape.

By Izantux – WikiCommons, CC0, https://commons.wikimedia.org/w/index.php?curid=14933147

Most strain gauges are foil types.

Foil Strain gauge

Unmounted_strain_gauge
By Pleriche – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=61871859

Foil stain gauges are available in a wide choice of shapes and sizes to suit a variety of applications.

Get Free Course of Engineering Metrology

Find More about this course at Uncommon skill of Metrology

They operate by simple principle i.e. As the foil is subjected to stress, the resistance of foil changes in defined way.

Normally, wire gauges are used for high temperature applications and foil gauges are used for routine applications.

Some important parameter about Foil gauges are

  • High stability
  • Good proportionality
  • Easy manufacturing
  • Low output voltage(requires amplification)

A strain gauge’s conductors are very thin if it made of round wire, about 1/1000 inch in diameter.

Find more interesting gauges at our YouTube Channel

Advertisements

One comment

Leave a Reply to just mr. me Cancel reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: