Event Title

An Analytical Approximation for a Common Ultrasonic Grain Noise Diffraction Integral

Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

The scattering of sound from small inhomogeneities in a medium often plays an important role in ultrasonic inspection. For example, backscattered grain noise in metals can be a useful tool for characterizing the metal microstructure: the noise can be analyzed to deduce a backscatter coefficient, η, which carries information about the distribution of grain sizes and orientations [1]. On the other hand, backscattered grain noise can limit the detect- ability of small or subtle defects in metals. However, if η is known, one can estimate the level of noise likely to be present in a given inspection, and subsequently estimate the probability of detecting a given defect in the presence of noise [2].

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18A

Chapter

Chapter 1: Elastic Waves and Ultrasonic Techniques

Section

Scattering/Propagation

Pages

45-52

DOI

10.1007/978-1-4615-4791-4_5

Language

en

File Format

application/pdf

This document is currently not available here.

Share

COinS
 
Jan 1st, 12:00 AM

An Analytical Approximation for a Common Ultrasonic Grain Noise Diffraction Integral

Snowbird, UT, USA

The scattering of sound from small inhomogeneities in a medium often plays an important role in ultrasonic inspection. For example, backscattered grain noise in metals can be a useful tool for characterizing the metal microstructure: the noise can be analyzed to deduce a backscatter coefficient, η, which carries information about the distribution of grain sizes and orientations [1]. On the other hand, backscattered grain noise can limit the detect- ability of small or subtle defects in metals. However, if η is known, one can estimate the level of noise likely to be present in a given inspection, and subsequently estimate the probability of detecting a given defect in the presence of noise [2].