Location

La Jolla ,CA

Start Date

1-1-1989 12:00 AM

Description

Ultrasonic flaw sizing is critical in nondestructive evaluation. However, the data available for sizing are often quite limited. For example, it is common to have a single pulse-echo (back scattered) wavetrain of limited bandwidth: i.e. it contains wavelengths that are comparable to and larger than the dimensions of the flaw. On the other hand a fair amount is often known about the nature of the expected range of flaws. It may be known that the flaw is a void, or a crack or an inclusion of a certain material type. In addition the expected shape for a flaw may be known (e.g. the flaw may be known to be a spherical flaw of unknown radius). The problem is then to determine the relevant unknown features of the flaw from the available data.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

8A

Chapter

Chapter 1: Fundamentals of Classic Techniques

Section

Elastic Wave Scattering and Inversion

Pages

125-131

DOI

10.1007/978-1-4613-0817-1_16

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Strong Scatterers and 1-D Born Inversion

La Jolla ,CA

Ultrasonic flaw sizing is critical in nondestructive evaluation. However, the data available for sizing are often quite limited. For example, it is common to have a single pulse-echo (back scattered) wavetrain of limited bandwidth: i.e. it contains wavelengths that are comparable to and larger than the dimensions of the flaw. On the other hand a fair amount is often known about the nature of the expected range of flaws. It may be known that the flaw is a void, or a crack or an inclusion of a certain material type. In addition the expected shape for a flaw may be known (e.g. the flaw may be known to be a spherical flaw of unknown radius). The problem is then to determine the relevant unknown features of the flaw from the available data.