Frequency dependent directivity of guided waves excited by circular transducers in anisotropic composite plates.
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.
Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar 350040, Russia. evg@math.kubsu.ru
Evgeny
E
Glushkov
Natalia
N
Glushkova
Artem
A
Eremin
Rolf
R
Lammering
Mirko
M
Neumann
D016880:Anisotropy; D003198:Computer Simulation; D004548:Elasticity; D004867:Equipment Design; D005583:Fourier Analysis; D016014:Linear Models; D008962:Models, Theoretical; D009038:Motion; D013499:Surface Properties; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation*