Title:
【発明の名称】スリ-ブを画成する回転可能な電磁界を有する渦電流探傷検知器
Document Type and Number:
Japanese Patent JPS62501231
Kind Code:
A
Abstract:
Method and apparatus for scanning a generally cylindrical workpiece for flaws. A cylindrical metallic sleeve is rotatably supported about a workpiece path of travel. Two differentially wound energization coils surround the sleeve near two apertures in the sleeve. The coils are energized with a high frequency signal that induces eddy currents in the workpiece. The apertures periodically disrupt the eddy current inducing magnetic fields and enhances signals from the coils indicative of the presence of flaws in the workpiece.
Inventors:
Harris, Richard, M
Parec, David, A
Abram Kuzick, Richard, F
Parec, David, A
Abram Kuzick, Richard, F
Application Number:
JP50307785A
Publication Date:
May 14, 1987
Filing Date:
June 26, 1985
Export Citation:
Assignee:
Elty-Voy Sty-Le Company-Inco-Polated
International Classes:
G01N27/90; B21B38/00; (IPC1-7): G01N27/90
Attorney, Agent or Firm:
Sumio Takeuchi