Magnetovision as a Tool for Investigation of Fatigue Process of Ferromagnetics

Document Number: 2001-01-4073

Date Published: March 2001

Author(s):
Jerzy Kaleta - Wroclaw University of Technology
Przemys\u3aw Wiewi\aorski - Wroclaw University of Technology

Abstract:
The study was aimed at designing a system for measuring the strength H of magnetic field surrounding a ferromagnetic specimen subjected to cyclic (or static) loading. A new type of camera for monitoring the magnetic picture of specimen was constructed. The measurement principle is based on the reverse magnetostriction effect (also called the Villari effect). No external magnetizing field is assumed; the entire magnetic effect is due solely to cyclic mechanical loading. The measuring arrangement is best suited for examining plane stress cases. The measuring setup is made up of a precision computer controlled X-Y positioner and a basis unit whose main element is a single magnetoresistor or an array of magnetoresistors. A digital processing system yields a quasi-continuous magnetic image of an object.

File Size: 501K
Product Status: In Stock

Purchase more technical papers and save! With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay. Learn more >