Fractal characterization of ultrasonic backscattered signals from single crystal and polycrystalline materials
- 1 August 1995
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 98 (2) , 938-942
- https://doi.org/10.1121/1.413519
Abstract
For the first time the concept of fractal geometry is introduced to characterize discrete ultrasonic time domain signals from a single crystal, a polycrystalline metal, and an alloy. These signals possess unique fractal dimensions and remain invariant with the change in sampling rate of signal capturing. The fractal dimension of these signals were evaluated by both the box counting method and the power spectrum method. The similarity and difference in the fractal dimension of these signals obtained from the above two methods have been discussed.Keywords
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