Laser ultrasound technique for material characterization of Zircaloy cladding tubes in elevated temperature environment

Cheng-Hung Yeh; Che-Hua Yang

doi:10.1117/12.881000

20 April 2011 Laser ultrasound technique for material characterization of Zircaloy cladding tubes in elevated temperature environment

Cheng-Hung Yeh, Che-Hua Yang

Author Affiliations +

Proceedings Volume 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011; 79833J (2011) https://doi.org/10.1117/12.881000
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

This research focuses on characterizing elastic properties of Zircaloy cladding tubes at high temperature environment up to 295°C. A laser ultrasound technique (LUT) is used to measure the dispersions of guided waves propagating along the axial direction of the cladding tubes at different temperature environment. It is shown that the LUT is able to measure the dispersion curve of Zircaloy in the elevated temperature environment. Then an inversion procedure is used to determine elastic constants of the Zircaloy tubes at high temperature from the measured dispersion spectra of guided waves. The dispersion spectra shift towards the direction of lower frequency and lower velocity while the temperature increase. The Young's modulus is found to decrease linearly as the temperature increasing. This method is potentially useful to probe the material properties at high temperature environment in a remote and nondestructive way which is desired in nuclear power industry.

Citation Download Citation

Cheng-Hung Yeh and Che-Hua Yang "Laser ultrasound technique for material characterization of Zircaloy cladding tubes in elevated temperature environment", Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79833J (20 April 2011); https://doi.org/10.1117/12.881000

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