6.3.1. Electrical Resistance Strain Gauges

Try these first

1. 1.

   What is the primary function of an electrical resistance strain gauge?

   Hint

   Think about the effect of stress on a material.

2. 2.

   Name one material that strain gauges can be bonded to.

   Hint

   Consider common construction materials.

3. 3.

   What principle do electrical resistance strain gauges operate on?

   • A) Change of length
   • B) Change in electrical resistance
   • C) Change in temperature

   Hint

   Focus on how materials behave under stress.

4. 4.

   True or False: Strain gauges are only used on metal surfaces.

   • True
   • False

   Hint

   Think about different materials used in construction.

5. 5.

   Consider a bridge with improperly installed strain gauges resulting in faulty readings. Outline a corrective maintenance approach with recommendations.

   Hint

   Think about the steps needed to validate correct readings.

6. 6.

   Devise an experiment using strain gauges to monitor the performance of a new concrete composition in a bridge. What would you measure, and how would you interpret your data?

   Hint

   Consider what data represents strength and durability.