This report describes the applicability study result of the diagnostic te chnology by the electromagnetism to an internal rotation object. In order to perform further detailed study, measurement of the basic data of a pu mp and the preliminary experiment in an air drive turbine were conducted....
英字タイトル:
Applicability study of the diagnostic technology by the electromagnetism to the rotating machines

This study proposes an electromagnetic method for the evaluation of the condition of the turbine in a nuclear power plant. Experimental re sults of a small turbine driven by an electric motor are shown in this paper. The results show that it is possible to detect the movement a nd condition of the impeller by applying the electromagnetic evaluation method. Moreover, an excitation experiment shows that the higher o rder vibration of the impeller can be detected and the distinction of the condition of with a...
英字タイトル:
Material Evaluation of Cast Iron based on Eddy Current

Abstract: This study proposes an electromagnetic method for the evaluation of the condition of a turbine in a nuclear power plant. Experimental results of a small turbine driven by an electric motor are shown in th is paper. A high temperature superconductivity electromagnet is applied outside the case of the turbine to provide excitation magnetic field. On the other hand, pickup coils are placed near the impeller inside the case of the turbine. The experimental results show that it is not only possible to...
英字タイトル:
Electromagnetic evaluation of the impeller of a turbine using a hightemperature superconductivity electromagnet