• Fundamentals of measuring with strain gauges.
  • Strain gauge types and application techniques.
  • Calculation of the mechanical deformations. under tension, bending and torsion.
  • Calculation of Poisson’s ratio using tensile test.
  • Correlation between mechanical strain and electrical resistance in a strain gauge.
  • Determination of the modulus of elasticity for from the measurement data of a tensile test.


  • Experimental unit investigating the fundamentals of strain gauge measurement.
  • Strain gauge application areas protected by Plexiglas cover.
  • Steel test bodies.
  • Display of strain gauge reading on digital multimeter (DMM)

Students are introduced to strain gauge measurements using this trainer. It teaches the basic workings of strain gauges andthe procedures for converting between raw data from electronics, strains, and forces. This trainer teaches how to connect bridge-type sensors and how to measure strain using a strain gauge for bending, torsion, and tensile strength. In sensor systems, strain gauges are widely used to measure forces, moments, and deformations. The apparatus experimental unit offers a thorough introduction to the principles of strain gauge measurement. There are four strain gauge measurement sites on each of the three test specimens for tension, bending, and torsion. The complete bridge is connected for the strain gauges. The specimens are loaded incrementally, enabling a sequential monitoring of the strain reading. It is possible to insert the specimens into the frame quickly and precisely. A Plexiglas cover that serves as protection for the strain gauge measurement range also makes it easily visible for inspection. The bridge supply voltage is provided by the measuring amplifier, which also digitally displays the load-dependent “bridge detuning” in voltage values. For any preloading, the digital display also has a zero balancing functionality. The experiment’s various components are all arranged nicely and kept safe in a box. Three additional tension bars in brass, copper, and aluminium are available as attachments, allowing the modulus of elasticity to be measured experimentally. The comprehensive course materials outline the foundations and offer a step-by-step description of the experiments.