Accession Number : ADA329552
Title : Hystersis and Acoustic Emission as Non-Destructive Measures of the Fatigue Process in Metals.
Descriptive Note : Final rept. 1 Apr 95-31 May 97,
Corporate Author : ILLINOIS INST OF TECH CHICAGO
Personal Author(s) : Guralnick, S. A.
PDF Url : ADA329552
Report Date : 31 MAY 1997
Pagination or Media Count : 76
Abstract : Piezomagnetic effects are due to interactions between the mechanical and magnetic mesostructure of materials. In particular, under repeated loading cycles, microplastic processes generate dislocations and modify the texture of grains, voids, inclusions, and other defects. These mechanical changes in turn alter the arrangement of the coextensive ferromagnetic domain structure and affect the intensity of the associated magnetic fields.
Descriptors : *METALS, *FATIGUE(MECHANICS), *ACOUSTIC EMISSIONS, MAGNETIC FIELDS, MECHANICAL PROPERTIES, NONDESTRUCTIVE TESTING, CYCLES, INCLUSIONS, DISLOCATIONS, HYSTERESIS, FERROMAGNETIC MATERIALS.
Subject Categories : Test Facilities, Equipment and Methods
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE