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首页> 外文期刊>Structural engineering earthquake engineering >THREE-DIMENSIONAL FLAW RECONSTRUCTION FROM WAVEFORMS MEASURED ON THE SIDE OF A CYLINDER
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THREE-DIMENSIONAL FLAW RECONSTRUCTION FROM WAVEFORMS MEASURED ON THE SIDE OF A CYLINDER

机译：从圆柱侧面测量的波形进行三维跳变重建

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摘要

A modified three-dimensional inverse scattering method is applied to reconstruct the shape of a three-dimensional flaw in a cylindrical specimen. In this modified method, a measurement plane is restricted to the plane perpendicular to the axis of the cylindrical specimen. Thus the cross-sectional image of the flaw can be obtained. By moving the measurement plane along the axis of the cylindrical specimen, the cross-sectional image is obtained for each measurement plane. The three-dimensional flaw image is reconstructed by piling up the obtained cross-sectional images. Cylindrical specimens with a cylindrical cavity model and with a hemi- spheroidal cavity model are prepared. The performance of the modified method to reconstruct the three-dimensional flaw is verified by using the experimentally measured waveforms.
机译：一种改进的三维逆散射方法被应用于重建圆柱试样中三维缺陷的形状。在这种改进的方法中，测量平面被限制在垂直于圆柱试样轴线的平面上。因此，可以获得缺陷的横截面图像。通过沿着圆柱样品的轴线移动测量平面，可以获得每个测量平面的横截面图像。通过堆积获得的横截面图像来重建三维缺陷图像。准备具有圆柱腔模型和半球形腔模型的圆柱样本。通过使用实验测量的波形验证了改进方法重建三维缺陷的性能。

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