Frequency dependent directivity of guided waves excited by circular transducers in anisotropic composite plates | Zendy

Evgeny Glushkov | Zendy; Н. В. Глушкова | Zendy; Artem Eremin | Zendy; Rolf Lammering | Zendy; M. N. Neumann | Zendy

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Frequency dependent directivity of guided waves excited by circular transducers in anisotropic composite plates

Author(s) -

Evgeny Glushkov,

Н. В. Глушкова,

Artem Eremin,

Rolf Lammering,

M. N. Neumann

Publication year - 2012

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4734392

Subject(s) - directivity , acoustics , context (archaeology) , point source , point (geometry) , transducer , anisotropy , composite number , optics , physics , materials science , geometry , mathematics , computer science , telecommunications , antenna (radio) , geology , composite material , paleontology

Lamb wave propagation in fiber-reinforced composite plates is featured by a pronounced directivity of wave energy transfer along the fibers from a point surface source. In the case of non-point (sized) source, the main lobe of radiation diagram may turn with frequency up to the orthogonal to the fibers direction. This effect has been theoretically studied and physically explained in the context of semi-analytical integral-equation based mathematical model. The present paper gives its experimental verification.

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