Eddy current probe for inspecting electrically conducting parts

US6339327B1 · kind B1 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Lyliane Potiquet · Limoges, FR
• Hervé Schepens · Montigny-le-Bretonneux, FR
• Michel Pigeon · Les Ulis, FR

Key dates

• Filing date: Aug 2, 1999
• Grant date: Jan 15, 2002
• Expiry date: Aug 2, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/902
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The probe for inspecting electrically conducting parts (1) of the invention comprises a row of transmitter and receiver coils (27), (28) that form an array of energized coils. The receiver coils (28) are influenced by different magnetic fields created by several neighboring transmitter coils (27) at the same time, making them sensitive to different types of flaws. The array of energized coils is displaced along the row. The probes are usually used for inspecting steam generator tubes of nuclear power plants.