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首页> 外文会议>Annual Symposium on Quantitative Nondestructive Evaluation; 19980719-24; Snowbird,UT(US) >INTERACTIVE 3-D VISUALISATION AND ANALYSIS OF NDT DATA IN A CAD ENVIRONMENT
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INTERACTIVE 3-D VISUALISATION AND ANALYSIS OF NDT DATA IN A CAD ENVIRONMENT

机译：CAD环境中NDT数据的交互式3-D可视化和分析

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摘要

The use of 3-D visualisation can provide a significantly improved understanding of the content of NDT data sets. This paper describes an advanced, PC-based Workbench for the reconstruction, visualisation and analysis of 3-D ultrasonic NDT data in an interactive CAD environment. The software combines analysis features of established 2-D packages with facilities for real-time data rotation, interactive orthogonal/oblique slicing and 'true' image reconstruction. A speciality of the Workbench is the tight integration between CAD (imported from commercial packages or generated internally), image formation and defect analysis. Inspection data, ultimately from a variety of methods, is reconstructed as a 3-D image and visualised with the CAD model. During main-beam reconstruction, scanning surface shape and reflection from component boundaries is accounted for through interaction with the full 3-D model of the component. Subsequently, sub-volumes within the image may be reconstructed to include mode conversion at the surfaces: to produce a 'true' image. Thus indications are correctly positioned, even if multiple reflections or mode conversions are involved. Sub-sets of images can be formed, comprising data pertaining to just one particular bounce. The CAD model can be adjusted to take account of variations in component geometry, with subsequent data reconstruction in the modified specification.
机译：3-D可视化的使用可以显着改善对NDT数据集内容的理解。本文介绍了一种基于PC的高级工作台，用于在交互式CAD环境中重建，可视化和分析3-D超声NDT数据。该软件将已建立的2-D软件包的分析功能与实时数据旋转，交互式正交/斜切和“真实”图像重建功能相结合。 Workbench的特色是CAD（从商业包装中导入或内部生成），图像形成和缺陷分析之间的紧密集成。最终来自多种方法的检验数据被重建为3-D图像，并使用CAD模型进行可视化。在主光束重建过程中，通过与零件的完整3D模型进行交互来解决扫描表面形状和零件边界反射的问题。随后，可以重建图像内的子体积以在表面处包括模式转换：以产生“真实”图像。因此，即使涉及多次反射或模式转换，也可以正确定位指示。可以形成图像的子集，包括仅与一个特定反弹有关的数据。可以调整CAD模型以考虑组件几何形状的变化，并在修改后的规范中进行后续数据重建。

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