Effect of Temperature on Vibrating Wire Strain Gauges

摘要

Two methods of assessing true pipe strain values from indicated strain readings are outlined: a graphical analysis which tends to be intuitive, and a theoretical analysis which derives a solution from first principles. True strain in buried pipes is influenced by thermal effects due to changes in ground temperature and mechanical effects due to the constraints placed on the pipe by the surrounding soil. Both analyses consider the thermal and mechanical components of true strain, while the theoretical analysis enables these individual components to be determined from the indicated strain readings.