Acoustic field generated by an axisymmetric source embedded in a fluid-filled cylindrical hole located in a micro-cracked medium. (January 2016)

• Record Type: Journal Article
• Authors: Markov, M.; Levin, V.; Markova, I.
• Is Part Of: International journal of engineering science. Volume 98(2016:Jan.)
• Page Start: 3
• Page End: 13
• Publication Date: 2016-01
• Subjects: Micro-cracked medium -- Effective field method -- Anisotropic medium; Engineering -- Periodicals; Ingénierie -- Périodiques; Engineering; Periodicals; 620
• DOI: 10.1016/j.ijengsci.2015.07.002
• Languages: English
• ISSNs: 0020-7225

Abstract

Abstract: We have calculated acoustic field generated by an impulse acoustic source in a fluid-filled cylindrical cavity located in a transversely isotropic medium. It is assumed that the anisotropy is caused by presence of crack-like inclusions. We derive effective elastic constants of the surrounding medium using the effective field method. We have shown that in the case of spheroidal crack-like inclusions with normals parallel to the axis of symmetry of the cavity the crack density can be obtained in terms of velocities of zero-order guided wave (the Stoneley wave) and shear wave propagating along the cavity (the SV-wave in the seismic terminology).