Procedure

1. Dimensions of test piece is measured at 3 different places along its height/length to determine the average c/s area.
2. Ends of the specimen should be plain. For that the ends are tested on a bearing plate.
3. The specimen is placed centrally between the two compression plates, such that the center of moving head is vertically above the center of specimen.
4. Load is applied on the specimen by moving the movable head.
5. The load and the corresponding contraction are measured at different intervals. The load interval may be as 500kg.
6. Load is applied until the specimen fails.
7. The values of stress and strain are calculated at several intervals and are plotted on a graph.
8. The resultant graph is the Stress-Strain curve which is the property of a material and is independent of the dimensions of specimen used.

Virtual Procedure

1. Start the Experiment by clicking the play button.
2. Observe the compression of the box in the simulation window.
3. As the simulation continues the different value of stress, strain and deformation is observed according to the increasing Load.
4. A Graph is plotted between the stress-strain values observed.
5. The Experiment allows you to pause/play/restart the simulation to view the values of different parameters at every stage of simulation.

NOTE: There are various features available for the graphs such as zoom, etc. The function/feature of each icon above the graphs becomes visible upon hovering over the concerned icon.