Accession Number : AD0759207

Title :   Eddy Current Measurement of Magnetic Flux Density.

Descriptive Note : Technical rept. Jul 71-Jan 72,

Corporate Author : GENERAL AMERICAN TRANSPORTATION CORP NILES ILL GENERAL AMERICAN RESEARCH DIV

Personal Author(s) : Kraska,I. R. ; Prusinski,R. G.

Report Date : NOV 1972

Pagination or Media Count : 35

Abstract : The report presents the results of an effort to improve the reliability of magnetic particle inspection of large or irregular-shaped parts by assuring optimum magnetic flux densities in the areas of interest during inspection. An assessment of flux density influence on the sensitivity of magnetic particle inspection is given. Data is provided showing eddy current response to changes in magnetic flux densities in the range of 2 to 13.5 kilogauss. This range is investigated to assure compatibility with the inspection density requirements of MIL-I-6868. This range can be changed by simple instrument adjustments. (Author Modified Abstract)

Descriptors :   (*NONDESTRUCTIVE TESTING, MAGNETIC FIELDS), DEFECTS(MATERIALS), QUALITY CONTROL, STEEL

Subject Categories : Fabrication Metallurgy
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE