基于小波变换和模态声发射理论，通过模态声发射试验的方法确定了管道中导波传播的频散特性。
Based on the wavelet transformation and the theory of modal acoustic emission, the dispersion of guided wave propagated in thin plate was investigated by acoustic emission experiment.
根据这一规律，通过计算声发射信号曲线的赫斯特指数(或分形维数)，便可确定声发射试验中的凯塞点。
On the basis of this character of Hurst index, the Kaiser point can be determined correctly by calculating the Hurst index of AE signal curve.
试验表明，声发射现象与材料破裂具有十分密切的关系。
The experiments show that there exist very close relation between the phenomenon of acoustic emission and material fracture.
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