Thin Cylinder Apparatus Model MT 055
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. 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.
| Size: | 95cm x 75cm x 80cm (LxWxH) |
| Weight: | 20 kg |
Item Description
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.
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.
The cylinder unit which is resting on the four pins is supported in a frame and located axially by fixed stop and adjustable stop. When the adjustable stop is screwed out, the pressurized oil in the cylinder forces the piston against the end caps. When the stop is screwed in it forces the piston away from the end caps and all the axial load is taken on the frame thus relieving the cylinder of all longitudinal stress. Pure axial load transmission from cylinder to frame is ensured by the hardened steel balls situated at each end of the cylinder.
Six active strain gauges are cemented onto the cylinder, and other six temperature compensating gauges being cemented to a plate. The connection between gauges and strain bridge is made by means of a socket attached to the base. With the aid of a suitable Strain Bridge the strains in the cylinder under various loading conditions may be measured and by using the appropriate conversion the stresses determined.
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