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Reply to “Comment on ‘Interaction of a surface wave with a dislocation’ ”

Agnès Maurel1, Vincent Pagneux2, Felipe Barra3, and Fernando Lund3

  • 1Laboratoire Ondes et Acoustique, UMR CNRS 7587, Ecole Supérieure de Physique et Chimie Industrielles, 10 rue Vauquelin, 75005 Paris, France
  • 2Laboratoire d’Acoustique de l’Université de Maine, UMR CNRS 6613, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
  • 3Departamento de Física and CIMAT, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile

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Phys. Rev. B 80, 136102 – Published 9 October, 2009

DOI: https://doi.org/10.1103/PhysRevB.80.136102

Abstract

A subsurface moving dislocation in an elastic half space generates vertical displacements at the free surface. We compare this displacement for two different values of the dislocation viscous drag coefficient. The different resulting surface patterns suggest the free surface plays a decisive dynamical effect. We thus compare this displacement, using the dynamic Green function for an elastic half space, with the result of the calculation using the static Green function for an infinite space, as in the work of Zolotoyabko and Shilo [preceding paper, Phys. Rev. B 80, 136101 (2009), and Shilo and Zolotoyabko, Phys. Rev. Lett. 91, 115506 (2003)] when the dislocation dynamics is the same. Considering the static Green function of an infinite space instead of the correct dynamic Green function of the half space leads to an underestimation of the resulting displacement at the free surface by a factor up to 50 for dislocation depths smaller than one Rayleigh wavelength λR. We also discuss the constraints that recent ultrasound attenuation and resonant ultrasound spectroscopy experiments place on dislocation parameters, such as density and viscous drag coefficient.

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Comments & Replies

Comment on “Interaction of a surface wave with a dislocation”

E. Zolotoyabko and D. Shilo
Phys. Rev. B 80, 136101 (2009)

Article Text

Original Article

Interaction of a surface wave with a dislocation

Agnès Maurel, Vincent Pagneux, Felipe Barra, and Fernando Lund
Phys. Rev. B 75, 224112 (2007)

References (18)

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Outline

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Phys. Rev. B 80, 136102– Published 9 October, 2009
  • Received 15 April 2009

© 2009 American Physical Society

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