AN IDENTIFICATION OF SCATTERERS USING TOPOLOGY OPTIMIZATION WITH 3D TIME DOMAIN BIEM
-
- YOSHIKAWA Hitoshi
- 京都大学大学院 情報学研究科
-
- TERASAWA Ryo
- 新日鉄住金
Bibliographic Information
- Other Title
-
- 3次元スカラー波動問題における時間域境界積分方程式法を用いたトポロジー最適化による散乱体決定解析
Abstract
We consider an identification of the number, shape and location of scatterers in a target object using scalar waves in anticipation of application to ultrasonic quantitative non-destructive estimate (QNDE). We calculate the scattering wave field numerically and introduce a objective functional which consists of the difference between the numerical and observational scattering field. The scatterers are determined as the minimizer of the objective functional. We also consider the topology change of the target object in order to execute the identification considering the generation and extinction of scatterers. We define a topology derivative as the sensitivity of the objective functional with respect to the topology change and execute the identification of the scatterers using the topology derivative via the level set method. We solved some numerical examples and determined the number, shape, and location of scatterers at the same time.
Journal
-
- Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))
-
Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 71 (2), I_71-I_78, 2015
Japan Society of Civil Engineers
- Tweet
Details 詳細情報について
-
- CRID
- 1390282680326590976
-
- NII Article ID
- 130005128858
-
- ISSN
- 21854661
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed