A Magnetic Method of Detecting Shell Casing Defects.

Abstract

The report presents the results of a technique used to detect defects in shell casings manufactured under the Small Caliber Ammunition Modernization Program. The method of detecting defects is based on the fact that a magnetic flux field is produced about a conductor carrying a current. The technique for testing shell casings was evaluated in the laboratory of 5.56 caliber shell casings. The results of the laboratory tests proved that the magnetic field check is not sensitive to small defects. The lack of sensitivity is due to the fact that the magnetic field about a defect failed to follow the shape of the defect but rather tended to form a concentric symmetrical pattern. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1974
Accession Number
AD0786514

Entities

People

  • Merlin R. Baker

Organizations

  • United States Army Materiel Command

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Ammunition
  • Buildings And Structures
  • Laboratory Procedures
  • Laboratory Tests
  • Magnetic Fields
  • Magnetic Flux
  • Magnetic Phenomena
  • Research Facilities
  • Sensitivity

Readers

  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design
  • ballistics.