Event Title

Interactive 3-D Visualisation and Analysis of NDT Data in a CAD Environment

Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

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 réconstruction. 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.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18A

Chapter

Chapter 3: Simulations, Signal Processing, Tomography, and Holography

Section

Signal Processing and Analysis

Pages

789-796

DOI

10.1007/978-1-4615-4791-4_101

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Interactive 3-D Visualisation and Analysis of NDT Data in a CAD Environment

Snowbird, UT, USA

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 réconstruction. 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.