Development of temperature compensated high elongation resistance strain gauges for use up to 250°C |
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Authors: | Zhu You-liang Zhang Yang-xi |
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Affiliation: | Research Institute of Aero-structure Thermal Strength, P.O. Box 4, Chang An, Shanxi, People's Republic of China |
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Abstract: | The paper describes the development and evaluation of temperature compensated high elongation resistance strain gauges for use from room temperature to 250°C. These gauges could be temperature-compensated on steels with coefficient of thermal expansion α = 11 ppm/°C. Thermal output within 250°C was about 1 μm/m/°C and maximum standard deviation of 5 gauges was 34 μm/m. Strain limit was > 4% at room temperature and at 250°C. Gauge factors of different strain ranges at R.T. and at 250°C are tabulated. Some applications are stated. |
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Keywords: | Electric resistance strain gauges temperature compensation elevated temperature compensation high elongation |
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