Subvoxel Level Short Crack Simulation and Visualization

Bo Ao; Ding Hua Zhang; Xin Bo Zhao; Xia Gang Xu

doi:10.4028/www.scientific.net/MSF.532-533.556

Paper Titles

Study on Surface Integrity in Hard Milling of Hardened Die Steel
p.540

Defect Free Machining of Glass with Improved Surface Characteristics
p.544

Metal Machinability Evaluation with DEA Method
p.548

Development of a Control System on 5-Axes Automatic Scanning for Nondestructive Ultrasonic Test
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Subvoxel Level Short Crack Simulation and Visualization
p.556

The Study of Collateral Damages in the Process of Femtosecond Laser Micromachining Single-Crystalline Silicon
p.560

Microstructure and Mechanical Property of Electron Beam Brazing and Vacuum Brazing Joints of Stainless Steel
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Fabrication of Three-Dimensional Micro-Structures with Two-Photon Absorption by Femtosecond Laser
p.568

Ultrafast Relaxation Character of Nonequilibrium Carriers in GaAs Excited by Femtosecond Laser
p.572

HomeMaterials Science ForumMaterials Science Forum Vols. 532-533Subvoxel Level Short Crack Simulation and...

Subvoxel Level Short Crack Simulation and Visualization

Abstract:

In order to obtain the projections with short cracks, a novel subvoxel model is proposed for short crack simulation. Short cracks are modeled in subvoxel space. Giving an initial subvoxel as an initial cracking point, a short crack is simulated according to the random growing mode. If there are multiple initial cracking points, multi-cracks can be simulated easily, and short cracks are visualized using CT. Limited by the resolution of real CT system, it is not possible to detect individual short crack but a group of them. By pre-processing the reconstructed images, new images are obtained, which are very close to actual conditions. The differences between the reconstructed images without short cracks and the images with short cracks are analyzed. Experiment results proved that it is feasible to detect short crack behavior by analyzing the grey level variance of the images.