Metal Foil Strain Gauge

This type of Strain Gauge comes under the classification of Bonded Strain Gauge since it is bonded on the case under study.

The metal foil of 0.02mm thick is produced using the printed circuit technique. This metal foil strain gauge is produced on one side of the plastic backing. Leads are soldered to the metal foil for electrically connecting the gauge to a measuring instrument (wheat stone bridge).

Operations With the help of an adhesive material, the gauge is pasted/bonded on the structure under study. Now the structure is subjected to a force (tensile or compressive). Due to the force, the structure will change the dimension. As the it is bonded to the structure, the stain gauge will also undergo change in both in length and cross-section (that is, it strained). This strain (change in dimension) changes the resistance of the gauge which can be measured using a wheat stone bridge. This change in resistance of the strain gauge becomes a measure of the extent to which the structure is strained and a measure of the applied force when calibrated.

Heating sealing aluminum foil rolls