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Title: Magnetostrictive resonance excitation

Abstract

The resonance frequency spectrum of a magnetostrictive sample is remotely determined by exciting the magnetostrictive property with an oscillating magnetic field. The permeability of a magnetostrictive material and concomitant coupling with a detection coil varies with the strain in the material whereby resonance responses of the sample can be readily detected. A suitable sample may be a magnetostrictive material or some other material having at least one side coated with a magnetostrictive material. When the sample is a suitable shape, i.e., a cube, rectangular parallelepiped, solid sphere, or spherical shell, the elastic moduli of the material can be analytically determined from the measured resonance frequency spectrum. No mechanical transducers are required and the sample excitation is obtained without contact with the sample, leading to highly reproducible results and a measurement capability over a wide temperature range, e.g. from liquid nitrogen temperature to the Curie temperature of the magnetostrictive material.

Inventors:
;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
7280817
Patent Number(s):
PATENTS-US-A7574404
Application Number:
ON: DE92017008; PPN: US 7-574404
Assignee:
Dept. of Energy
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent Application
Resource Relation:
Patent File Date: 29 Aug 1990
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ELASTICITY; MEASURING METHODS; MATERIALS; ATTENUATION; MAGNETOSTRICTION; ULTRASONIC WAVES; MAGNETIC PROPERTIES; MECHANICAL PROPERTIES; PHYSICAL PROPERTIES; SOUND WAVES; TENSILE PROPERTIES; 420500* - Engineering- Materials Testing

Citation Formats

Schwartz, R B, and Kuokkala, V T. Magnetostrictive resonance excitation. United States: N. p., 1990. Web.
Schwartz, R B, & Kuokkala, V T. Magnetostrictive resonance excitation. United States.
Schwartz, R B, and Kuokkala, V T. 1990. "Magnetostrictive resonance excitation". United States.
@article{osti_7280817,
title = {Magnetostrictive resonance excitation},
author = {Schwartz, R B and Kuokkala, V T},
abstractNote = {The resonance frequency spectrum of a magnetostrictive sample is remotely determined by exciting the magnetostrictive property with an oscillating magnetic field. The permeability of a magnetostrictive material and concomitant coupling with a detection coil varies with the strain in the material whereby resonance responses of the sample can be readily detected. A suitable sample may be a magnetostrictive material or some other material having at least one side coated with a magnetostrictive material. When the sample is a suitable shape, i.e., a cube, rectangular parallelepiped, solid sphere, or spherical shell, the elastic moduli of the material can be analytically determined from the measured resonance frequency spectrum. No mechanical transducers are required and the sample excitation is obtained without contact with the sample, leading to highly reproducible results and a measurement capability over a wide temperature range, e.g. from liquid nitrogen temperature to the Curie temperature of the magnetostrictive material.},
doi = {},
url = {https://www.osti.gov/biblio/7280817}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}