The relation between ratio of peaks and degree of defect is worked out, then a method of quantity analysis in frequency domain is proposed.
根据这一特征，得到小峰与大峰之比与缺陷程度之间的关系曲线，提出利用导纳曲线进行缺陷量化分析。
Using this software, the relationship between degree of defect and ratio of amplitude was studied, in which the influence of the characteristics of the soil around piles is taken into account.
通过大量正演计算，拟合出桩周土为黏土、砂土、粉土条件下缺陷程度与时域速度响应波形中入射波与反射波波幅比之间的关系式。
The time frequency difference between grain noise and defect signal provide a possibility for enhancement of signal-to-noise ratio (SNR) in ultrasonic testing.
晶粒噪声和缺陷信号的时频特征的差异，为提高超声检测的信噪比提供了可能。
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