MAGNETIZING FREQUENCY-DEPENDENCE OF MAGNETOACOUSTIC EMISSION IN PIPELINE STEEL

被引：11

作者：

DHAR, A

ATHERTON, DL

机构：

[1] Department of Physics, Queen's University, Kingston, Ont.

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 02期

关键词：

D O I：

10.1109/20.123852

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetoacoustic emission (MAE) in pipeline steel was investigated and found to increase linearly with the magnetizing frequency. The rate of increase of MAE rms voltage with frequency was found to depend on the magnitude of the magnetic flux density. The observed MAE waveforms have been analyzed in terms of the frequency dependence of their rms voltage and the pulse-height distribution of MAE voltage pulses. With increasing magnetizing frequency, the smaller amplitude MAE pulses are replaced by large amplitude pulses, and the total number of MAE pulses also increases. The results are discussed in light of existing models of domain wall motion and magnetoacoustic emission.

引用

页码：1003 / 1007

页数：5

共 18 条

[1]

BURKHARDT GL, 1982, MATER EVAL, V40, P669

[2] MAGNETOACOUSTIC AND BARKHAUSEN EMISSION - THEIR DEPENDENCE ON DISLOCATIONS IN IRON [J].