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- W2372040706 abstract "By establishing an experimental system of acoustic measurement,the method of measuring the acoustic echo technique with the depth of drilling is proposed. The impedance characteristics of the transducer were measured by impedance analyzer,and the spectrum of the transmitting transducer was measured by pulse method,and the waveforms and spectra of the diameter of the drill rod,such as single pulse excitation and burst signal excitation,were studied. Experimental results show that the signal is more suitable for the measurement of acoustic wave propagation in the frequency of 2. 5 k Hz. With the increase of the length of the drill pipe,the waveform is fast and can be measured. The length of the drill pipe is 30 m.The diameter of the pseudo drill pipe structure,the theory on a direct waves propagation 480 m. under the current experimental conditions can be the propagation distance of 120 m." @default.
- W2372040706 created "2016-06-24" @default.
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- W2372040706 date "2015-01-01" @default.
- W2372040706 modified "2023-09-23" @default.
- W2372040706 title "Experimental Study on Acoustic Measurement Technique of Drilling Depth" @default.
- W2372040706 hasPublicationYear "2015" @default.
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