Accession Number:

ADA171848

Title:

Magnetomechanical Acoustic Emission - A Review

Descriptive Note:

Technical rept.

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

• Ono, Kanji

Report Date:

1986-09-01

Pagination or Media Count:

14.0

Abstract:

This article reviews magnetomechanical acoustic emission MAE that can be used in developing nondestructive testing techniques for residual stress measurements and microstructural characterization. Effects of metallurgical and magnetic parameters on MAE are considered drawing from basic studies on nickel and iron as well as from applied research on rail and wheel steels. Some of the observed features of MAE can be explained in terms of the domain theory. Practical applications require additional developmental efforts, but potential for useful residual stress analysis is well demonstrated.

Descriptors:

• *MAGNETOACOUSTICS
• *NONDESTRUCTIVE TESTING
• ACOUSTIC EMISSIONS
• CORRELATION TECHNIQUES
• DOMAIN WALLS
• FERROMAGNETIC DOMAINS
• RESIDUAL STRESS

Subject Categories:

• Test Facilities, Equipment and Methods
• Acoustics
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE