AE法による低速転がり軸受の診断技術
Diagnosis of Low Speed Rolling Element Bearing by AE Method.
著者:
迫 孝司 Takashi SAKO 岩崎 俊二 Shunji IWASAKI 金子 修一 Syuichi KANEKO
発刊日:
公開日:
acoustic emissionlow speed rotating equipmentmachine diagnosisrolling element bearingsignal processing
概要
Abstract Most of low speed rotating equipments includes large important equipments, and an equipment stoppage caused by damage of rolling element bearing brings significant losses to a plant. This paper relates to a diagnostic method of rolling element bearing in low speed rotating equipment of 100 rpm or less, and proposes a method to diagnose using AE envelope waveform of a 100 k to 1 MHz frequency region. Abnormal ity diagnosis wasafter envelope processing in addition to amplification of AE waveform. Furthermore, a method to remove electric noises in an event counting method and an abnormality judgment method by an event counting method in low speed rotation are proposed. We are manufacturing the diagnostic instrument by this diagnostic method, and are utilizing for the abnormality diagnosis and condition monitoring on sites.
