Measurement of Attenuation Q Value of Cylindrical Sample from Wave Energy |
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| Authors: | Shi Xingjue Ye Lin Zhao Cuiping Li Guangquan and Li Weidong |
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| Institution: | Shi Xingjue,Ye Lin,Zhao Cuiping,Li Guangquan and Li WeidongDepartment of Earth and Space Sciences,University of Science and Technology of China,Advanced Center for Earth Science and Astronomy,Third World Academy of Science,Hefei 230026,China |
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| Abstract: | Two methods for measuring the attenuation Q value, frequency-amplitude ratio method and waveform inversion method, were analyzed. The size and shape of most rock samples in the laboratory can hardly fulfill the rigorous requirements of the above methods. A new test method of using the wave energy to calculate the Q value was proposed. The principle, calculation formulae and some points for attention were expounded; the relationship between Qp and QE was discussed; and many samples were measured by this method. The result was compared with those by other methods, and it was considered that the Q value by this method lies between Q p and QE. |
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| Keywords: | Attenuation Ultrasonic wave Energy |
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