Industrial CT Scanning for Gray Value Analysis

Posted February 25, 2022

Industrial CT for Local Gray Value/ Linear Density Analysis

Industrial CT scanning is used for the analysis of battery insulations, liquid solutions, composite sheets, and more. All of these applications are practical and have been completed by us for clients across the globe.

This case study highlights multi-material segmentation of glass test tubes, plastic caps, and four types of liquid.

Gray Value Analysis

Local gray value measurements allow one to quantify linear density. This method can be used to understand, quantify, and image how changes in process affect the material. Further, using a benchmark, gauge, or control, along with other quality metrics, this method can be used to track changes after material use.

These images show four test tubes with different liquids. Cores from their centers were extracted and measured for differences in linear density/ gray value (how much energy was required to penetrate the liquid over time.) A map was applied to demonstrate inter-sample differences as well. The sample on the right has an uneven distribution of density.

Multi-material Segmentation & Geometric Analysis

Of course, we can also use this data for geometric analysis. We can understand the seal integrity between the plastic cap and glass tube. We can compare tube geometries for repeatability, or even wall thickness. We can even measure the volume of the liquid inside the enclosed tube.