The study of inspection on thin film resistance strain gauge contact failure by electrical excitation thermal-wave imaging

Strain films in the thin film resistance strain gauge are prepared by magnetron sputtering method. Some results concerning the electromechanical and structural properties of nichrome (Ni80Cr20 wt.%) thin films are presented. As compared to the well-known Ni-Cu (constantan) alloy film, which are widely used for manufacturing pressure and force sensors, nichrome (Ni80Cr20 wt.%) thin films exhibit gauge factor values of the same order of magnitude, but they are much more corrosion resistant and adherent to the substrate. The influences of composition and post-deposition annealing on the electrical resistance, temperature coefficient of resistance (TCR) and gauge factor of nichrome (Ni80Cr20 wt.%) thin films are discussed.

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Evaluation of some thin film transition metal compounds for high temperature resistance strain gauge application

Materials Science and Engineering A ◽

10.1016/0921-5093(89)90206-2 ◽

1989 ◽

Vol 111 ◽

pp. 145-154 ◽

Cited By ~ 7

Author(s):

Jih-Fen Lei ◽

H. Okimura ◽

John O. Brittain

Keyword(s):

Thin Film ◽

High Temperature ◽

Transition Metal ◽

Strain Gauge ◽

Resistance Strain ◽

Transition Metal Compounds ◽

Metal Compounds ◽

Temperature Resistance ◽

Resistance Strain Gauge ◽

High Temperature Resistance

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THERMAL WAVE IMAGING OF CRACKS IN METALS

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1983685 ◽

1983 ◽

Vol 44 (C6) ◽

pp. C6-519-C6-524

Author(s):

K. R. Grice ◽

L. J. Inglehart ◽

L. D. Favro ◽

P. K. Kuo ◽

R. L. Thomas

Keyword(s):

Thermal Wave ◽

Wave Imaging ◽

Thermal Wave Imaging

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A low-cost laboratory thermal wave imaging system

Journal of Physics E Scientific Instruments ◽

10.1088/0022-3735/17/6/021 ◽

1984 ◽

Vol 17 (6) ◽

pp. 526-532 ◽

Cited By ~ 2

Author(s):

G F Kirkbright ◽

R M Miller ◽

A Rzadkiewicz

Keyword(s):

Thermal Wave ◽

Imaging System ◽

Low Cost ◽

Wave Imaging ◽

Thermal Wave Imaging

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Experimental investigation on vibration monitoring with FBG sensor and resistance strain gauge

10.1117/12.837940 ◽

2009 ◽

Author(s):

Jixuan Chen ◽

Huaping Gong ◽

Shuhua Li

Keyword(s):

Experimental Investigation ◽

Strain Gauge ◽

Resistance Strain ◽

Vibration Monitoring ◽

Resistance Strain Gauge ◽

Fbg Sensor

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Research on Temperature Compensation of the Fiber Bragg Grating Sensor and the Resistance Strain Gauge

Journal of Nanoelectronics and Optoelectronics ◽

10.1166/jno.2021.3041 ◽

2021 ◽

Vol 16 (6) ◽

pp. 1020-1027

Author(s):

Feng Zhu ◽

Min Liu ◽

Chengjun Xu ◽

Sheng Zou ◽

Chentong Chen ◽

...

Keyword(s):

Fiber Bragg Grating ◽

Strain Gauge ◽

Temperature Compensation ◽

Metal Structure ◽

Resistance Strain ◽

Fiber Bragg Grating Sensor ◽

Bragg Grating ◽

Resistance Strain Gauge ◽

Strain Monitoring ◽

Bragg Grating Sensor

The fiber Bragg grating sensor is widely used in strain monitoring of large metal structure and trend to replace the resistance strain gauge due to its advantages of strong stability, high measurement accuracy, multiple points measuring, strong environmental suitability and long transmission distance. The temperature-induced strain, which can have the same order of magnitudes as the mechanically-induced strain, will cause great errors in the strain monitoring. Therefore, the temperature compensation for the sensors is essential to guarantee the measurement accuracy. The existing theoretical models and experiment platforms for analyzing the temperature compensation are established by assuming that the testing temperature is constant. However, the surrounding temperature of some large metal structure is not stable, and the effect of temperature change cannot be neglected. This paper aims to establish an analytic model and an experiment platform to compare the temperature compensation of the fiber bragg grating sensor and the resistance strain gauge. The superiority of the temperature compensation for the fiber bragg grating sensor is verified. The result provides theoretical support for choosing the fiber bragg grating sensor in the long-time strain monitoring.

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