Discussion on the Variation and Quantification of Penetrating Signal Waveform in Acoustic Wave Detection
详细信息
- 责任者：Wu Qingzeng (Centre of Hydrogeology and Environmental Geology ; CGS ; Baoding 071051 ; China) ; Li Hongtao
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2012
- 卷期：36(1)
- 关键词：超声波法 ; ultrasonic methods
- 页码：p.144-148
- 图表：5 illus., 1 table, 4 refs.
- 分类号：1600
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
///For supersonic detection,the physical property of the measured media can be identified by using such kinds of acoustic information as the acoustic time,amplitude,frequency and waveform.In order to study the variation of the waveform,the authors made a test by using the model test block.The results show that the waveform of received signal is basically similar to that of the launching wavelet for the homogeneous media,which is consistent with acoustic boundary conditions.The mutation of received signal can result from the foreign body (defect) existent in the media.It can be explained based on the laws of refraction and superposition,so as to summarize some regularities and propose a quantitative method for quantification.