ポンプ軸受及びインペラの不具合の大きさと電磁診断技術の信号との相関関係
英字タイトル:
Electromagnetic Nondestructive Detection for Wounded Bearings and Impellers andCorrelation of Size of Defect and Signal
著者:
萱田 良 Ryo KAYATA 石川 達也 Tatsuya ISHIKAWA 堀内 隆夫 Takao HORIUCHI 真木 紘一 Koichi MAKI 遊佐 訓孝 Noritaka YUSA
発刊日:
公開日:
Ball BearingsEddy CurrentsElectromagnetic Nondestructive Detection MethodImpellers
Electromagnetic Nondestructive Detection for Wounded Bearings and Impellers andCorrelation of Size of Defect and Signal
著者:
萱田 良 Ryo KAYATA 石川 達也 Tatsuya ISHIKAWA 堀内 隆夫 Takao HORIUCHI 真木 紘一 Koichi MAKI 遊佐 訓孝 Noritaka YUSA
発刊日:
公開日:
カテゴリ: 第6回
キーワードタグ:Ball BearingsEddy CurrentsElectromagnetic Nondestructive Detection MethodImpellers
概要
new electromagnetic method for the nondestructive evaluation of electric pumps with ball bearings is roposed. A permanent magnet generates a static magnetic field and a coil of several hundred turns wrapped round it is used to pick up eddy currents induced inside rotating ball bearings and impellers. First, a method hat make use of the autocorrelation is applied to the signals of the ball bearings. A relation between therocessed signals and the size of the defects in the bearings is obtained. In a second part, the signal of the stating impeller is measured. The analysis of the measured signal allows evaluating the displacement of the haft and of the impeller.
