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):

Report Date:

1997-05-31

Pagination or Media Count:

76.0

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.

Subject Categories:

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

Distribution Statement:

APPROVED FOR PUBLIC RELEASE