Title :
Ultrasonic attenuation measurements in Egyptian dry compact rocks
Author :
El-sherbiny, S.M. ; Hassanin, A.G. ; Nofal, H.A. ; Abd-Alkader, Eng S M
Author_Institution :
Fac. Eng., Helwan Univ., Egypt
Abstract :
The attenuation of ultrasonic waves in specific dry rocks is measured in laboratory. The pulse echo technique is used to determine attenuation coefficients (α) and quality factor (Q) values of different kinds of rocks in the frequency range of 1-5 MHz. The laboratory measurements showed that, the attenuation coefficients are linearly proportional to frequency (constant Q) in the considered frequency range.
Keywords :
Q-factor; geophysical techniques; rocks; ultrasonic absorption; ultrasonic variables measurement; ultrasonic waves; 1 to 5 MHz; Egyptian dry compact rocks; attenuation coefficients; pulse echo technique; quality factor values; ultrasonic attenuation measurements; Acoustic beams; Acoustic transducers; Attenuation measurement; Extraterrestrial measurements; Frequency measurement; Geophysical measurements; Laboratories; Piezoelectric transducers; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Radio Science Conference, 2003. NRSC 2003. Proceedings of the Twentieth National
Print_ISBN :
977-5031-75-3
DOI :
10.1109/NRSC.2003.1217316
