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arXiv 1102.2487math.AP
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用边界测量重建弹性波中可穿透夹杂

Reconstruction of penetrable inclusions in elastic waves by boundary measurements

Rulin Kuan

摘要:

本文利用Ikehata的封闭方法,在时谐波中重建了平面弹性体中可穿透未知夹杂。采用具有复多项式相位的复几何光学解作为探测工具。在与我们类似的情况下,由于方程中零阶项的存在,在早期的研究中需要假设一些技术假设。在西尼和吉田最近的工作中,他们成功地放弃了这些假设,使用不同的想法来获得关键的估计。特别地,夹杂物的边界仅需要是Lipschitz。在这项工作中,我们将同样的想法应用于我们的模型。有趣的是,经过更仔细的处理,我们发现夹杂物的边界实际上可以假设为仅仅是连续的。

英文摘要:

We use Ikehata's enclosure method to reconstruct penetrable unknown inclusions in a plane elastic body in time-harmonic waves. Complex geometrical optics solutions with complex polynomial phases are adopted as the probing utility. In a situation similar to ours, due to the presence of a zeroth order term in the equation, some technical assumptions need to be assumed in early researches. In a recent work of Sini and Yoshida, they succeeded in abandoning these assumptions by using a different idea to obtain a crucial estimate. In particular the boundaries of the inclusions need only to be Lipschitz. In this work we apply the same idea to our model. It's interesting that, with more careful treatment, we find the boundaries of the inclusions can in fact be assumed to be only continuous.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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