A special apparatus for workpieces´ magnetic measurement of joule balance at NIM

Author

Han, B. ; He, Q. ; Wang, Y. ; Li, S. ; Li, Z. ; Li, C.

fYear

2012

fDate

1-6 July 2012

Firstpage

344

Lastpage

345

Abstract

This paper presents a special portable apparatus for workpiece magnetism determination of joule balance at NIM. It could be used to evaluate easily the magnetic variation of mechanical parts before and after processing, quickly measuring weak magnetic properties of materials. The measuring process is simple without a customized sample. From the variation of a mutual inductance value in two different conditions, i.e., adjacent and remote to mechanical components, the magnetism variation of material of joule balance would successfully be monitored. The results showed that three mechanical parts of joule balance were mixed with ferromagnetic substance, not satisfied with the requirement of non-magnetic materials.

Keywords

ferromagnetic materials; magnetic variables measurement; NIM; ferromagnetic substance; joule balance workpiece magnetism determination; material weak magnetic property measurement; mechanical components; mechanical part magnetic variation; mutual inductance value variation; nonmagnetic materials; portable apparatus; workpiece magnetic measurement; Current measurement; Inductance; Magnetic flux; Magnetic noise; Magnetic shielding; Magnetic susceptibility; Materials; Joule balance; Plank´s constant measurement; magnetic susceptibility; parameter of mutual inductance; weak magnetic material;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2012 Conference on

Conference_Location

Washington, DC

ISSN

0589-1485

Print_ISBN

978-1-4673-0439-9

Type

conf

DOI

10.1109/CPEM.2012.6250943

Filename

6250943