バルクハウゼン信号の高次周波数ゆらぎ解析法とその応用

概要

論文の詳細を見る
Ferromagnetic materials are widely used for various manufactured products such as cars, trains, and ships. Iron and steel are the most popular materials for frame structures because of their mechanical properties. Nondestructive testing of iron and steel is an extremely practical way of maintaining their mechanical reliability. It is well known that Barkhausen signals are only emitted from ferromagnetic materials while they are magnetizing. These signals also vary depending on their past mechanical as well as radioactive stress histories.In the present paper, we have applied a generalized analysis of frequency fluctuations to Barkhausen signals in order to detect the various mechanical stresses. Surprisingly, we have succeeded in clarifying that application of our frequency fluctuation analysis to the Barkhausen signals made it possible to detect several kinds of different pressure mechanical stresses.
法政大学情報メディア教育研究センターの論文