해양플랜트전문인력양성사업단

• 비파괴 검사 방법 중 하나인 ET (Eddy Current Inspection, 와전류 탐상 검사) 방법에 대한 원리와 사용 장비 및 검사에 대한 교육을 통해 ET 검사 전문가 양성을 목표로 함.

Principles/Theory

• Eddy Current Theory
• Generation of Eddy Current
• Properties of Eddy Current

Equipment / Materials / Probe-General

• Through encircling or annular coils, and hall elements

Read out selection

• Meter / Oscilloscope, X-Y and other displays
• Alarms, Light, etc
• Strip chart recorder / Instrument design considerations

Revision of day 1

Techniques / Calibrations

• Factors which affect coil impedance
• Test part / Test System / Selection of test

Consideration ? affecting choice of test

• Signal / Noise Ratio / Phase Discrimination

Coupling / Fill Factor / Lift ? off

• Permeability Changes / Saturation

Standardization / Techniques / Reference Standard

Procedures

• Preparation of work specific procedure

Interpretation / Evaluation

• Flaw detection
• Sorting for Properties
• Process control

Open and Closed book exam