Strain rosette

Strain Rosette in Civil Engineering

1. Strain Rosette Structural Engineering Theory of Elasticity and Plasticity

2. Introduction Strain rosette can be defined as the arrangement of strain gauges in three arbitrary directions. These strain gauges are  used to measure the normal strain in those three directions.  Single strain gauges can only measure strain effectively in one direction, so the use of multiple strain gauges enables more measurements to be taken, providing a more precise evaluation of strain on the surface being measured. 2

3. Types Of Strain Rosettes 3 Tee Rosette is used only when principal strain direction are Known If among the three strain gauges two of them are mutually perpendicular then it is called Rectangular Rosettes If all the three strain gauges are at equal angle from each other is called Delta Rosette

4. 4

5. 5

6. 6

7. Applications: 7   S train gauge technology is to install strain gauges on structural components in a bridge or building to measure stress and compare them to analytical models and stress calculations. Strain gauges may also be used to monitor bridge response to overloaded or speeding trucks, or to measure displacement. Wireless telemetry can be used to transmit the data collected via Ethernet.\ A more ordinary application of strain gauge technology on railroads is measurement of stress and strain on rails through strain gauges bonded to each rail. They measure axial tension or compression with no impact on the rails themselves

8. Thank You