Diaphragm — MOE Lab Tender Details

Diaphragm

Bench-mounted machine to allow students to do stress, strain and deflection tests on a diaphragm

Experiments
Experiments possible with this apparatus include the effect of pressure on:
Surface profile – the results are presented as a non-dimensional curve
Radial and circumferential strains
Radial and circumferential strain gradients across the diaphragm

Experimental measurements are compared with theory. The student is encouraged to use their results to determine the accuracy of the location of the strain gauges
Specifications
Cylinder Oil: SL Hydraulic Oil
Diaphragm material: Aluminium alloy to BS6082-T6
Diaphragm nominal thickness: 3.0 mm
Diaphragm Dimensions;
Nominal diameter = 200 mm
Nominal thickness = 3 mm
Young’s Modulus 69 GN.m-2
Poisson’s Ratio 0.33
Pressure: Displayed by Bourdon gauge, with output for Versatile Data Acquisition system
Maximum Pressure 75 kN.m-2
Surface profile measurement: By digital indicators, with output for Versatile Data Acquisition system
Strain:
Measured by electrical resistance gauges and displayed digitally, with output for Versatile Data Acquisition system
3x Circumferential gauges
4x Radial gauges
1x at 45°
Nett Dimensions and Weight: 700 mm wide x 307 mm front to back x 290 mm high, 20 kg