IMAGE SHARPENING OF LINEARIZED INVERSE SCATTERING METHOD FOR CONCRETE VOIDS

DOI Web Site 10 References
  • TSUNODA Takaya
    株式会社日本ピーエス (研究当時)福井大学大学院工学研究科 原子力・エネルギー安全工学専攻
  • SUZUKI Keigo
    福井大学 工学研究科建築建設工学専攻

Bibliographic Information

Other Title
  • コンクリート内在欠陥を対象とする線形化逆散乱解析の再構成像高精度化

Abstract

<p> Linearized Inverse Scattering Methods based on Kirchhoff approximation can be applicable to visualize flaw shapes with scattering waves from the flaw. Scattering waves from the flaws are measured by pseudo UT pulse-echo mode that two probes are operated simultaneously. In order to visualize the flaws inside the concrete, Parasitic Discrete Wavelet Transform (P-DWT) is applied to extract the frequency characteristic components in the scattered waves. The basis waveform of real-signal mother wavelet (RMW) is acquired by Finite Element Method (FEM) analysis. Scattered waves are filtered by P-DWT; then, they are processed with Kirchhoff Inverse Scattering Method. The imaging process includes to select the optimum Mother Wavelet with AIC and a suitable decomposition level in the wavelet analysis. It is possible to make it highly accurate to visualize the flaws by P-DWT with RMW created from FEM analysis.</p>

Journal

References(10)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top