A Fast Shape Inversion Method of Flaws in Materials for Infrastructures

M. Kitahara; M. Onishi; Kouichi Nakahata; Masayoshi Yamada

doi:10.4028/www.scientific.net/KEM.261-263.981

Paper Titles

On Microwave Dual Frequency Technique for Evaluation of Surface Cracks
p.955

Condition Monitoring of the Material Test Facility Using Vibration and Ultrasonic Measurements
p.963

Remote Nondestructive Evaluation of Delaminating Tiles by Using Photorefractive Vibration Imaging
p.969

Multiple Scattering of Elastic Waves in a Fiber-Reinforced Cementitious Composite
p.975

A Fast Shape Inversion Method of Flaws in Materials for Infrastructures
p.981

Time of Flight Diffraction Method Using Laser Ultrasound for Noncontact Flaw Height Measurement
p.987

SSRT-CER and Impedance Measurements of Oxide Films on Stainless Steels in Oxygenated High Temperature Water
p.993

Grain Boundary Engineering for the Control of Mechanical Properties and Oxidation-Induced Embrittlement in Silicon Carbides
p.999

Grain Boundary Engineering for Intergranular Corrosion Resistant Austenitic Stainless Steel
p.1005

HomeKey Engineering MaterialsKey Engineering Materials Vols. 261-263A Fast Shape Inversion Method of Flaws in...

A Fast Shape Inversion Method of Flaws in Materials for Infrastructures

Abstract:

The Born inverse scattering method is applied to the shape reconstruction of flaws in the concrete materials. To accelerate the inversion process, the algorithm of the fast Fourier transform is introduced in the integration process of the scattering amplitude. The concrete specimens with flaw models are prepared and the scattered waveforms from flaws are acquired in the pulse-echo mode. The shape of flaws is reconstructed by using the measured waveforms and the performance of the inversion method is demonstrated experimentally.