Thin Cylinder Apparatus Model MT 055

Sci-tech Thin Cylinder Apparatus Model MT 055 been developed to enable the student to verify the various
analytical formulae with actual measured results. Strain gauges mounted in various positions and orientations on the cylinder provide an opportunity for students to interpret the strains and stresses for a biaxial stress system.

Item Description

In the unit means are provided for relieving the cylinder of all longitudinal stress, so that the volume of Poisson’s Ratio and Young’s Modulus for the cylinder material may be accurately determined.

The Thin Cylinder Unit is supplied with a hand operated oil pump.
A thin wall tube contains two pistons. The first piston is located axially within the tube, extends beyond the end
of the tube and is drilled to suit a pressure gauge and a high-pressure flexible rubber hose connecting the hand operated pressure pump to the unit. This piston also has an in-built pressure relief valve and oil from the
relief valve returns to the pump reservoir connection by means of flexible pipe.

The second piston is free to move axially within the tube but its travel outwards is limited by plate and end-cap.

Technical Specifications

The thin cylinder unit and hand operated pump are mounted on a bench-top base plate. A thin wall tube contains two pistons.
The first piston is located axially; it extends beyond the end of the tube and is drilled to suit a pressure gauge and a high-pressure flexible rubber hose connecting the hand operated pressure pump to the unit. This piston also has an in-built pressure relief valve. The oil from the relief valve returns to the pump reservoir connection by means of flexible pipe.

The second piston is free to move axially within the tube, but its travel outwards is limited by a plate and end-cap.

The cylinder unit which is resting on the four pins is supported on a frame and located axially by a fixed stop and an adjustable stop.

Maximum test pressure: 40 bar.
Technical data about the thin cylinder unit: Reservoir Capacity: 75 cm3
Recommended oil: Castor oil
Pressure gauge (Manometer): 0-50 bar. Pre-set relief valve setting: 450psi approx. Cylinder material:
Aluminum alloy.
Strain gauges: Foil type. Gauge Factor: 2.0 8.

Six active strain gauges are cemented onto the cylinder to allow the measurement of surface strains at
various angles, and other six temperature compensating gauges are cemented to a plate.

With the unit is supplied a strain gauges console with selector for the different strain gauges. The measurement of the selected gauge is shown in a display. The reading visualized in the display gather the compensation due to temperature.

Manuals: This unit is supplied with the following manuals: Required Services, Assembly and Installation,
Starting-up, Safety, Maintenance and Practices Manuals.