刘力强. 实验室声发射到时数据定位处理方法[J]. 华北地震科学, 1986, 4(3): 31-42.
引用本文: 刘力强. 实验室声发射到时数据定位处理方法[J]. 华北地震科学, 1986, 4(3): 31-42.
Liu Liqiang. LOCATING ACOUSTIC EMISSION IN LABORATORY——MATHEMATICAL ANALYSIS OF ARRIVAL TIME[J]. North China Earthquake Sciences, 1986, 4(3): 31-42.
Citation: Liu Liqiang. LOCATING ACOUSTIC EMISSION IN LABORATORY——MATHEMATICAL ANALYSIS OF ARRIVAL TIME[J]. North China Earthquake Sciences, 1986, 4(3): 31-42.

实验室声发射到时数据定位处理方法

LOCATING ACOUSTIC EMISSION IN LABORATORY——MATHEMATICAL ANALYSIS OF ARRIVAL TIME

  • 摘要: 本文引入了两种新型的声发射(AE)定位方法:(1)列阵降幂法:通过调整传感器之间的相对位置,改善定位方程,使之线性化,最终推出AE定位方程的唯一解析解。(2)预标定搜索法:实验前,用AE模拟器标定测量区内各点的AE到时数据,实验后,将实验数据与标定数据逐个对比,搜索出AE源位置。它适用于在含复杂结构的样品中的AE定位。这两种方法都可大大节省计算时间。文中还讨论了误差分布,并给出了应用实例。

     

    Abstract: In this paper, two new kinds of mathematical analysis methods of arrival time are introduced:#br#(1)Array and power-down method: The AE-locating equations are linearized by improving the shape of the transducer array.Finally, the unique analytic solution of the equation is obtained.#br#(2)Pre-demarcating and rummaging method: Before the experiment, the arrival time data of acoustic emission of every point in the measuring area are demarcated with a AE-simulator.After the experiment, the measured data are compared with the pre-demarcated data to rummage the locations of AE hypocenters.It is applicable to the samples containing some complex structures.#br#These two methods can greatly save computation time.The error distribution of the location is discussed and a practical example is represented.

     

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