3D Model - Using the Volume Graphics Software

There is a continuing trend for miniaturization in the electronics industry, causing packages to become more intricate through design. Ultimately, this has led to further demand for 3D non-destructive X-ray inspection. A challenge with 2D inspection is that you see all the layers to the device at the same time. 3D inspection offers the solution of layer separation for more accurate analysis.

Nordson X-ray Inspection tools use three main techniques for computed tomography (CT). X-Plane and Planar CT are ideal for quickly examining large samples while maintaining the highest magnification. μCT is perfect for obtaining the highest resolution results from smaller samples, typically up to 150 x 135mm.

The two CT techniques produce data that can be reconstructed into a virtual 3D model of your sample. The resolution of the model is dependent on several factors. These include the quality and quantity of 2D images captured from the X-ray system, sample set-up, magnification, and precision of reconstruction geometry.

In this note we demonstrate a selection of Volume Graphics 3D rendering algorithms available for analysis of CT data. There are several rendering algorithms available for manipulation of your 3D model such as Isosurface, Scatter HQ and Phong.

Applications Requiring
Measurements and Analysis

If your applications require volumetric measurements such as porosity, inclusion and wall thickness analysis then Isosurface rendering is ideal. This algorithm displays the surface of the selected object as defined by the surface determination line displayed on the greyscale histogram

Figure 1 shows a Ball Grid Array (BGA) including porosity analysis. The measurement of voids is color coded making it easy to identify small and large areas of voiding…..

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