Elasto-optic technique for measurement of elastic wave propagation in solids Academic Article

abstract

• The modulation of the optical path of the beam of a laser vibrometer in a specimen under acoustic excitation is measured at two planes, separated by a precisely known distance. The phase shift and the decrease in magnitude are used to calculate the phase velocity and attenuation, respectively. The method is demonstrated for a homogeneous specimen, and the results compare favorably with those obtained by a conventional ultrasonic technique. The method is then applied to measure specular and first diffraction-order reflection from a coplanar periodic array of particles in an elastic matrix and phase velocity spectra in a tetragonal periodic particulate composite. As expected, in a periodic composite the establishment of dispersive Floquet-type waves is observed throughout the entire periodic particulate composite.

authors

• Kinra, Vikram

published proceedings

• EXPERIMENTAL MECHANICS

author list (cited authors)

• Henderson, B. K., Maslov, K. I., Eggenspieler, G., & Kinra, V. K.

citation count

• 1

complete list of authors

• Henderson, BK||Maslov, KI||Eggenspieler, G||Kinra, VK

publication date

• September 2002

publisher

• Springer Nature  Publisher

keywords

• Elasto-optic
• Floquet Waves
• Periodic Composite
• Wave Propagation

Digital Object Identifier (DOI)

• 10.1007/BF02410991

start page

• 338

end page

• 343

volume

• 42

issue

• 3

URL

• http%3A%2F%2Fdx.doi.org%2F10.1007%2Fbf02410991