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Article Dans Une Revue Journal of Sound and Vibration Année : 2018

Method for determining damping properties of materials using a suspended mechanical oscillator

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S. Biscans
  • Fonction : Auteur
S. Gras
  • Fonction : Auteur
M. Evans
  • Fonction : Auteur
P. Fritschel
  • Fonction : Auteur
C. Pezerat

Résumé

We present a new approach for characterizing the loss factor of materials, using a suspended mechanical oscillator. Compared to more standard techniques, this method offers freedom in terms of the size and shape of the tested samples. Using a finite element model and the vibration measurements, the loss factor is deduced from the oscillator's ring-down. In this way the loss factor can be estimated independently for shear and compression deformation of the sample over a range of frequencies. As a proof of concept, we present measurements for EPO-TEK 353ND epoxy samples.
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Dates et versions

hal-02396846 , version 1 (06-12-2019)

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Citer

S. Biscans, S. Gras, M. Evans, P. Fritschel, C. Pezerat, et al.. Method for determining damping properties of materials using a suspended mechanical oscillator. Journal of Sound and Vibration, 2018, 423, pp.118-125. ⟨10.1016/j.jsv.2018.02.061⟩. ⟨hal-02396846⟩
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