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http://ir.hust.edu.tw/dspace/handle/310993100/217
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| 題名: | Analytic Solution to acoustic scattering from layered models |
| 作者: | Chih-Yej King |
| 貢獻者: | Department of Electrical Engineering |
| 關鍵詞: | Lame Parameter
Spatial Fourier Transform
Rytov and Born Appreximations
Bulk and Shear Modulus
Dyadic Green Integration |
| 日期: | 2001-09
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| 上傳時間: | 2008-08-20T03:55:08Z
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| 摘要: | The identification of material characteristics in its fundamental form is an inverse problem - the construction under the specified geometry and composition of a medium from measurements of scattered ultrasonic radiation.
In a less rigid sense, the identification schemes reviewed in this research can be generally divided into two fundamental components. The first part involves the use of the amplitude of the echo signals, and the second concern does utilize its frequency transformation of the medium function. Consequently, analytic field solution of the ultrasonic wave propagating through homogeneous and/or inhomogeneous mediums is considered and discussed. Moreover, Rytov and Born approximations are used to evaluate and calculate the generic expression of the traveling wave.
The proposed model developed herein will be applicable to both 2 and 3 dimensional medium architecture. Even if the inverse problem exclusively involved, this algorithm is also situated to reconstruct the characteristic related to scatterer. |
| 關聯: | 修平學報 3, 131-146 |
| 顯示於類別: | [電機工程系(含碩士班)] 期刊論文
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| 03-09多層結構組織之超音波場效理論研究與物性識別分析.pdf | 783Kb | Adobe PDF | 4232 | 檢視/開啟 |
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