1999


From: Institute of Materials

3D Sight From Sonic Imaging

A new technique for visualising the three dimensional internal structure of an object will allow engineers to see exactly where cracks and faults have appeared and how well the structure has been built. The technique, being developed by Sonoscan, can provide an unparalleled 3D view of the internal features and defects of items such as integrated circuit packages, diamond coatings or ceramic discs.

The imaging technique uses computer software that stacks together a series of planar ultrasound images. These images are collected by pulsing ultrasound into an object and collecting the echoes that bounce back from any voids or defects. The resulting "acoustic solids" reveal all of a part's internal features and can be computer rotated and cross sectioned to allow detailed analysis. The imaging technique can also provide pictures at such a fine resolution that the user will be able to tell if a supplier has changed the composition of the material used.

This technique can provide a 3D view of the internal features and defects of most polymers, metals, ceramics and composite materials or in objects made up of one or more of these materials. 3D acoustic imaging provides a quick, non-destructive method of imaging and evaluating internal structure without having to physically cut open the part.

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