Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

When an ultrasonic wave is incident on a water/solid interface generally three waves are excited in the solid: one longitudinal and two shear. The complex amplitudes of the transmitted waves depend on the material properties and the angle of incidence. At incident angles higher than the first critical angle an evanescent longitudinal wave is excited near the surface. To satisfy the boundary conditions the imaginary parts of the shear wave amplitudes become non-zero. This implies that the shear waves experience a phase shift at the water/solid interface at incident angles higher than the first critical.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16B

Chapter

Chapter 6: Material Properties

Section

Materials Characterization

Pages

1367-1374

DOI

10.1007/978-1-4615-5947-4_177

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Phase Correction for Ultrasonic Bulk Wave Measurements of Elastic Constants in Anisotropic Materials

Brunswick, ME

When an ultrasonic wave is incident on a water/solid interface generally three waves are excited in the solid: one longitudinal and two shear. The complex amplitudes of the transmitted waves depend on the material properties and the angle of incidence. At incident angles higher than the first critical angle an evanescent longitudinal wave is excited near the surface. To satisfy the boundary conditions the imaginary parts of the shear wave amplitudes become non-zero. This implies that the shear waves experience a phase shift at the water/solid interface at incident angles higher than the first critical.