This paper aims at a detecting corrosion on the back surface of a ick steel plate. Our proposed technique is characterized by using pulsed eddy current testing with DC magnetization. The thick steel plate is magnetized by DC Magnetizer. Therefore the magnetization g erates the magnetic flux in the plate. The permeability of the plat e changes with the corrosion. Changes in the permeability of the pl ate are detected by pulsed eddy current testing. The corrosion on e back surface of the plate was detecte...
英字タイトル:
Corrosion Detection on Steel by using Pulsed Eddy Current Testing

As nuclear power plants age, the importance of maintenance increases and there is a need to apply inspection technologies suitable to importance of each item of equipment. In boiling water reactors, advanced inspection technologies are expected for internal components, i.e. shroud supports with complex-shaped Ni-based alloy welds. As an inspection technology for field inspection of the shroud supports phased array technology has been mainly developed for sizing of Stress Corrosion Crackings accessed from ...
英字タイトル:
Ultrasonic testing techniques for inspection of BWR internal components welds.

This paper aims at detecting thinning of the back surface of a steel double sided structure. Our proposed technique is characterized by using pulsed eddy current testing with DC magnetization. When a double structural steel is magnetized by DC current, flux leakage is generated as a result of thinning on the back surface. We have shown by the use of simulations that the permeability of the top plate has changed with flux leakage from the back plate. The steel plate without thinning and the steel plate...
英字タイトル:
Detecting Thinning on Back Surface of Double Structure of Steel by Pulsed Eddy Current Testing with DC magnetization