Location

Brunswick, ME

Start Date

1-1-1990 12:00 AM

Description

In immersion ultrasonic testing, a beam of sound must pass through a liquid-solid interface before it can interact with subsurface defects. In modern quantitative NDE studies, it is essential to know the beam properties in the solid so that flaw scattering variations, transducer diffraction corrections, etc. can be estimated. Using high frequency asymptotics and the method of stationary phase, we show here that analytical expressions can be derived for the wavefield radiated by a piston transducer, where the transducer is oriented normal to a plane liquid-solid interface (Fig. 1). In the main beam of the transducer these expressions will be shown to be equivalent to the solutions Schoch obtained for a single fluid medium [1].

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

9A

Chapter

Chapter 1: Fundamentals of Classical Techniques

Section

B: Elastic Wave Propagation

Pages

165-171

DOI

10.1007/978-1-4684-5772-8_19

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Transmission of an Ultrasonic Beam Through a Fluid-Solid Interface

Brunswick, ME

In immersion ultrasonic testing, a beam of sound must pass through a liquid-solid interface before it can interact with subsurface defects. In modern quantitative NDE studies, it is essential to know the beam properties in the solid so that flaw scattering variations, transducer diffraction corrections, etc. can be estimated. Using high frequency asymptotics and the method of stationary phase, we show here that analytical expressions can be derived for the wavefield radiated by a piston transducer, where the transducer is oriented normal to a plane liquid-solid interface (Fig. 1). In the main beam of the transducer these expressions will be shown to be equivalent to the solutions Schoch obtained for a single fluid medium [1].