CAJ | 학술논문

由油罐声发射检测直接得出油罐底板状态等级的评价研究工作有待完善.提出一种基于Hurst指数理论分析声发射信号幅值最大值分布的评价方法.从Hurst指数分形理论出发,结合声发射信号参数处理方法,给出研究条件假设,分析现场油罐声发射信号结果,并与开罐检测的底板状况加以对比分析.研究发现,相同检测条件,同种类型油罐底板状态等级与Hurst指数呈相反的关系.
유유관성발사검측직접득출유관저판상태등급적평개연구공작유대완선.제출일충기우Hurst지수이론분석성발사신호폭치최대치분포적평개방법.종Hurst지수분형이론출발,결합성발사신호삼수처리방법,급출연구조건가설,분석현장유관성발사신호결과,병여개관검측적저판상황가이대비분석.연구발현,상동검측조건,동충류형유관저판상태등급여Hurst지수정상반적관계.
The acoustic signal parameter analysis method plays an important role in acoustic signal analysis. The maximum of acoustic emission signal amplitude is an important parameter of acoustic signal. At present,the research work of oil?tank bottom de?gree by using oil?tank acoustic emission testing needs improving. Hurst parameter is applied to assess long memory of time series. This paper puts forward an estimation method of analyzing maximum distribution of acoustic emission signal amplitude based on Hurst parameter theory. The current acoustic emission signal analysis for oil?tank is based on Hurst parameter fractal theory,and combined with acoustic signal parameter analysis method and suitable hypothesis. Comparing results of tank?bottom testing,the de?duction which tank?bottom’s order and degree under the same testing condition are related oppositely on Hurst parameters is found.