Experimental Application of Strain Gauge Rosette and Determination of Principal Strains Using Mohr Circle

The objective of the experiment was to understand the practical application of strain gauge rosette and to determine principal strains and their direction using Mohr circle. Elastic constants of the specimen were evaluated using the values obtained from the experiment. The constants gotten from the experiment were compared with the standard elastic constants for steel. The comparison showed that the elastic constants evaluated from the experiment were very close to the standard ones. The small difference in their values can be attributed to experimental errors which cannot be completely avoided.