A novel methodology to simultaneously measure strain and temperature by means of an electrical resistance strain gauge powered by an ac signal and connected to a strain indicator by means of thermocouple wires is proposed. The experimental validation of the viability of this method is conducted by means of a purely electrical simulation of both strain and temperature signals, respectively from -2000 to 2000 μm m-1 and -250 to 230°C. The results obtained showed that strain measurement is affected by an error always less than ±2 μm m-1 for the whole range of simulated strains, while the error in temperature evaluation is always less than 0.6 °C. The effect of cross-talk between the two signals was determined to be insignificant.
- Simulataneous temperature and strain measurements
- Temperature and strain measurements
- Temperature and strain sensors
ASJC Scopus subject areas
- Polymers and Plastics
- Ceramics and Composites
- Materials Science (miscellaneous)