Measurement of Thermal Expansion by Moiré Interferometry


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Abstract


In this paper we present a simple optical method, used the moiré phenomenon, which is a straightforward method for contactless non-destructive metrological measurements, used to measure the thermal expansion and shrinkage of materials. This method comes in complement with the other existing methods. Indeed, at the time of measurement of expansion or the expansion coefficients, as well as, the other thermal parameters, there is the risk, that the result of measurement is sullied by errors, which are due to the measurement system. The method proposed in this paper, is based on an optical system, which uses the moiré techniques as method of control, which can currently detect nano-movement, who can reach 40 10-9 m. This value can be improved, because the optical system allows it. In this arrangement the link between the specimen to be analyzed and the system of measurement is made by optical way, which decreases the influence of the system on the result. The method proposed, allows a continuous assessment in real time, and gives results with good accuracy, owing to the fact that the optical system is not affected by the heat of furnace, which also offers the possibilities of controlling a material at the highest temperature with precision measurements.
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Keywords


Diffraction Pattern; Moiré Method; Contactless Metrology; Thermal Expansion

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References


R E. Edsinger, J F. Schooley, A high-accuracy dilatometer for the range-20 to 700°C International Journal of Thermophysics. Vol. 12, pp. 665-677, 1991.

G. Ruffino, P. Coppa, L. deSantoli, S. Santoboni. New optic-electronic dilatometer. International Journal of Thermophysics, Vol. 12, pp. 657- 664, 1991.

M. Omini, A. Sparavigna. A.Strigazzi, A dilatometric method to measure the thermal diffusivity of nonmetallic liquid. International Journal of Thermophysics. Vol. 15, pp. 215-227, 1994.

H. Watanabe, N.Yamada, M. Okaji, Interferometric dilatometer applicable to temperature range from 1300 to 2000 K. International Journal of Thermophysics. Vol. 22, pp. 1185-1200, 2001.

S. Ledesma, S.N. Goyanes, C. Dupalaa. Development of dilatometer based on diffractometry Review Scientific and Instrument Vol.73, issue 9, pp. 3271-3274, 2002.

H. Watanabe, N.Yamada, M. Okaji, Development of Laser interferometric dilatometer for measurements of thermal expansion of solids in a temperature range of 300 to 1300 K International Journal of Thermophysics. Vol. 23, pp. 543-554, 2002.

Q. Deng, L. Xu, Measurement of thermal expansion coefficient of phenolic foam at low temperatures cryogenics Vol 43, issue 8, pp 465-468, 2003.

H. Watanabe, N.Yamada, M. Okaji, Linear thermal expansion coefficient of silicon from 293 to 1000 K. International Journal of Thermophysics Vol. 25, pp. 221-36, 2004.

H. Korkmaz, B. can, A thermal expansion system using a High-temperature unguided half-bridge displacement transducer. Instrumentation and Measurement, IEEE Transaction on Vol. 54, issues 5, pp, 1984-1988, 2005.

C.G. Tseng, Y.S. Jiang, Optical interference dilatometer Measurement Science and Technology. Vol. 16, pp, 2114-2120, 2005.

G. Bianchini, Interferometric dilatometer for thermal expansion coefficient determination in the 4-300 K range, Measurement Science and Technology, Vol. 17, issue 4 pp. 689-694, 2006.

I. Amidror, The theory of the moiré phenomenon Kluwer academic Publishers, (Dordrecht, The Netherlands 2000).


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