Development of temperature-compensated resistance strain gages for use to 700°C

Wu, Tsen-tai; Liang-cheng, MA; Zhao, Linbao

doi:10.1007/bf02326368

Cited by 15 publications

(2 citation statements)

References 1 publication

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“…These materials are finding greater use in applications involving advanced aeropropulsion systems and high speed civil transport. Strain gages most commonly used in high temperature measurements are resistance based foil strain gages (Wu et al, 1981 ;Hudson, 1989 ;Stange, 1983 ;Lei et al, 1989) or capacitance based strain gages (Harting, 1975 ;Noltingk, 1974 ;Norris and Yeakley, 1976) and are all limited operating temperature of less than -850 ·C. The recent entry in high temperature strain sensing field are transducers based on cylindrical optical waveguides (optical fibers) produced from amorphous silica (Chang et al, 1994;Lee and Taylor, 1991) and sapphire (Dils, 1983 ;Wang et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Planar optical waveguide temperature sensor based on etched bragg gratings considering nonlinear thermo-optic effect

Lee

Ahn

Sirkis³

2001

KSME International Journal

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This paper demonstrates the development of optical temperature sensor based on the etched silica-based planar waveguide Bragg grating. Topics include design and fabrication of the etched planar waveguide Bragg grating optical temperature sensor. The typical bandwidth and reflectivity of the surface etched grating has been -0.2 nm and -9 %, respectively, at a wavelength of -1552 nm. The temperature-induced wavelength change is found to be slightly non-linear over -2oo·C temperature range. Typically, the temperature-induced fractional Bragg wavelength shift measured in this experiment is 0.0132 nmj"C with linear curve fit. Theoretical models with nonlinear temperature effect for the grating response based on waveguide and plate deformation theories agree with experiments to within acceptable tolerance.

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Section: Introductionmentioning

confidence: 99%

Planar optical waveguide temperature sensor based on etched bragg gratings considering nonlinear thermo-optic effect

Lee

Ahn

Sirkis³

2001

KSME International Journal

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“…Therefore, as the basic research for the measurements of thermal stresses, the various problems such as the changes in gage characteristics with temperature and the improvement of the measurement have been investigated by many researchers [1][2][3][4][5][6]. While in recent years the new configurational gages that can be used up to 700 0 C or 1000 0 C have been developed [7][8][9][10], it appears that a very accurate and simple measurement of thermal stresses has not been achieved.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Transient Thermal Stresses Using the 5-Element Strain Gage

Goshima

Miyao

1985

Journal of Thermal Stresses

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Strain gage evaluation with four-point bending at moderate temperatures

Wey

1997

Experimental Mechanics

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This paper describes the application of the traditional four-point bending technique to conduct strain gage performance tests at moderate temperatures. The tests measure the apparent strain, linearity, drift, creep and hysteresis behavior to ascertain the reliability of strain gages to be used in the testing of experimental cylindrical vessels subjected to thermal loading. The four-point bending rig was designed to take advantage of the advances in personal computer datalogging and graphical processing software. The test rig is designed to provide a thermal barrier to minimize the heat losses and thermal isolation of the test beam while maintaining structural continuity. A low wattage and lightweight electric foil heater incorporating a precise temperature controller minimizes weight and enhances temperature stability. Gage performance data on five "candidate" strain gages at temperatures ranging from ambient to 215~ (419~ are presented, and the evaluation procedure is outlined. The strain gage with the most acceptable performance was identified within the validity limits from ambient to a temperature of 215~ and from zero to a maximum strain of 1000 tx~.

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Development of temperature-compensated resistance strain gages for use to 700°C

Cited by 15 publications

References 1 publication

Planar optical waveguide temperature sensor based on etched bragg gratings considering nonlinear thermo-optic effect

Planar optical waveguide temperature sensor based on etched bragg gratings considering nonlinear thermo-optic effect

Measurement of Transient Thermal Stresses Using the 5-Element Strain Gage

Strain gage evaluation with four-point bending at moderate temperatures

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