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.
A novel method for the simultaneous measurement of temperature and strain using a three wire connection / Cappa, Paolo; Marinozzi, Franco; Sciuto, S. A.. - In: MEASUREMENT SCIENCE & TECHNOLOGY. - ISSN 0957-0233. - STAMPA. - 12:(2001), pp. 502-506.
A novel method for the simultaneous measurement of temperature and strain using a three wire connection
CAPPA, Paolo;MARINOZZI, Franco;
2001
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
