Strain Gauge Trainer — MOE Lab Tender Details

Strain Gauge Trainer

This is a compact, self-contained, bench-top trainer that shows and compares how resistance strain gauges work and how they measure strains in different structures.

Experiments
Introduction to the equipment and the different bridge connections (quarter, half and full-bridge)
Strains and stresses in a bending system
Strains and stresses in a torsion system
Strains and stresses in a tension system, Poisson’s ratio and Young’s modulus
Tensile strains and stresses in different materials (with optional tensile specimens) and comparison of Poisson’s ratio and Young’s modulus
Comparison of different strain measurement systems and how they could measure force

Specifications
Sets of masses: The large mass set gives weights from 0.5 kg to 10 kg in a range of units. The small mass set gives weights from 10 g to 500 g in 10 g units.
Dummy resistors: Set of three 350 Ohm high precision resistors that match the strain gauges
Strain display:
Multiline display that shows:
Bridge output voltage (μV)
Strain reading in micro-strain (με)
Active arms (gauges)
Gauge factor
Strain systems:
Bending system: Four standard gauges fitted to a given datum on a steel beam, fixed as a cantilever. Nominal beam cross-section is 5 mm x 20 mm.
Torsion system: Two sets of identical 45-degree shear/torque strain gauge rosettes fitted to a torsion bar. Nominal bar diameter is 10 mm.
Tension system: Two sets of identical 90-degree ‘Tee’ strain gauge rosettes fitted to a tensile test specimen. Steel specimen supplied as standard. Nominal tension specimen cross-section is 2 mm x 10 mm.