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Article Dans Une Revue Ultrasonics Année : 2014

Sub-gigahertz laser resonant ultrasound spectroscopy for the evaluation of elastic properties of micrometric fibers

Résumé

The cross-section eigenmodes of micrometric cylinders were measured in the range of several tens of MHz to about 0.5 GHz. The vibrations were excited using subnanosecond laser pulses. The cross-section eigenmodes were simulated using finite element modeling in a 2D geometry. Using the method of resonant ultrasound spectroscopy, the vibration spectrum of an aluminum wire of diameter 33μm served to determine Young’s modulus and Poisson’s ratio with a precision of 0.7% and 0.3%, respectively. The calculated and measured frequencies of cross-section eigenmodes were fitted with a precision better than 0.5% in the 50–500 MHz range.
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Dates et versions

hal-03348169 , version 1 (17-09-2021)

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Denis Mounier, Christophe Poilâne, Haithem Khelfa, Pascal Picart. Sub-gigahertz laser resonant ultrasound spectroscopy for the evaluation of elastic properties of micrometric fibers. Ultrasonics, 2014, 54 (1), pp.259-267. ⟨10.1016/j.ultras.2013.06.014⟩. ⟨hal-03348169⟩
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