Choice of the Distance between the Pole-Pieces of the Electromagnet Yoke in a Magnetic Method of Material Testing

Journal Article · Sat Apr 09 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1916730· OSTI ID:20655381

Komorowski, M; Gratkowski, S; Chady, T ^[1]

---

1. Technical University of Szczecin, ul. Sikorskiego 37, 70-313 Szczecin (Poland)

With magnetic methods of testing, a magnetic field is induced inside the object being tested and any resulting changes of magnetic flux in the region of interest are observed. In this paper we consider the magnetic field excitation by using an electromagnet yoke, operated by DC and with adjustable distance between the pole-pieces of the yoke. The sensitivity of detection for any portion of a component being tested varies with the distance between the pole pieces and, hence, the choice of the distance is of great importance. Simplified theoretical analysis as well as results of measurements for steel plates are given.

• OSTI ID: 20655381
• Journal Information: AIP Conference Proceedings, Vol. 760, Issue 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Golden, CO (United States), 25-30 Jul 2004; Other Information: DOI: 10.1063/1.1916730; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DETECTION
ELECTROMAGNETS
MAGNETIC FIELDS
MAGNETIC FLUX
NONDESTRUCTIVE TESTING
PLATES
SENSITIVITY
STEELS