石油化工设备
石油化工設備
석유화공설비
PETRO-CHEMICAL EQUIPMENT
2013年
6期
21-24
,共4页
304 不锈钢%点蚀%小波变换%模态声发射%信号特性
304 不鏽鋼%點蝕%小波變換%模態聲髮射%信號特性
304 불수강%점식%소파변환%모태성발사%신호특성
304 stainless steel%pitting corrosion%wavelet transform%mode acoustic emission%signals characteristics
为了研究304不锈钢的点蚀声发射信号特性,应用小波变换和模态声发射技术对304不锈钢的点蚀声发射信号进行了分析,分析研究结果表明,点蚀信号波形主要是由能量较大的低频段弯曲波和能量较小的高频段扩展波构成的。研究结果对304不锈钢点蚀声发射监测具有一定的实际指导意义。
為瞭研究304不鏽鋼的點蝕聲髮射信號特性,應用小波變換和模態聲髮射技術對304不鏽鋼的點蝕聲髮射信號進行瞭分析,分析研究結果錶明,點蝕信號波形主要是由能量較大的低頻段彎麯波和能量較小的高頻段擴展波構成的。研究結果對304不鏽鋼點蝕聲髮射鑑測具有一定的實際指導意義。
위료연구304불수강적점식성발사신호특성,응용소파변환화모태성발사기술대304불수강적점식성발사신호진행료분석,분석연구결과표명,점식신호파형주요시유능량교대적저빈단만곡파화능량교소적고빈단확전파구성적。연구결과대304불수강점식성발사감측구유일정적실제지도의의。
In order to study acoustic emission (AE)signals waveform characteristics of pitting corrosion on 304 stainless steel,wavelet transform and mode acoustic emission technology were combined to deal with recorded AE signals.The results showed that signal waveform was mainly composed of low-frequency flexural wave with larger energy and high-frequency expansion wave with lesser energy.The research results have some certain significance for AE monitoring of pit-ting corrosion on 304 stainless steel.