論文
DPマッチング,周波数領域のヒストグラム及び主成分分析法を用いたインバータ制御回転機械の自動診断法
著者:
小林 祐介,Yusuke KOBAYASHI,富田 優,Masaru TOMITA,宋 瀏陽,Liuyang SONG,陳山 鵬,Ho JINYAMA
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In recent years, inverter controlled rotating machines are becoming major for saving energy and maintenance labor. Up to now many kinds of methods about diagnosing rotating machines are proposed, but most of them are applicable only for machines rotating at constant speed. When rotating speed change, the acceleration signal measured for diagnosis becomes quite different. And applying the reviously proposed methods to invertercontrolled machines is difficult. So, in this paper, the method in which the diagno...
英字タイトル:
Automatic Diagnosis Method for Inverter Controlled Rotating Machinery Using DP Matching, Histogram of Frequency Domain and Principal Component Analysis
第3回
圧延した FeCu モデル合金の析出挙動と磁気特性の関係
著者:
鎌田 康寛,Yasuhiro KAMADA,高橋 正氣,Seiki TAKAHASHI,越後谷 淳一,Junichi ECHIGOYA,荒 克之,Katsuyuki ARA,菊池 弘昭,Hiroaki KIKUCHI,小林 悟,Satoru KOBAYASHI,登澤 雄介,Yusuke TOZAWA
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This study demonstrates the possibility of applying magnetic methods to pressure vessel surveillanc e at nuclear power plants. Magnetic hesteresis-minor-loop measurement and TEM observation were pref ormed on thermally aged Fe-1.0wt%Cu model alloys. Minor loop parameters decreased with increasing a ging time. The mechanism is discussed in terms of Cu precipitation behaviors of cold-rolled alloys....
英字タイトル:
Relation between Precipitation Behaviors and Magnetic Properties in Cold-rolled FeCu Model Alloys