A porosity is usually an air gap or bubble within a part. Porosities are often unwanted and found commonly in injection moulded or cast parts. A porosity can often be seen as a dark area on a CT slice. The opposite to a porosity is an inclusion. These are usually seen as bright areas on a CT slice which indicate a denser material within an otherwise homogeneous part. Inclusions can be desirable and composite parts rely on inclusions to perform as expected.
Pores and inclusions can be viewed in both 2D and 3D. The 3D representation as seen below gives a very clear understanding of the location of the pores in the part.
Numerical data can be generated from a porosity analysis. This allows direct comparisons between parts on the type of porosity that has been detected. A sample of the types of information that can be extracted from porosities has been listed below.
It can be useful to see pores in your parts but understanding how these are going to affect part performance is important. If the scan is of a cast part and the part has yet to be machined, it is possible to overlay the machined CAD model and calculate if a pore is located in excess material or if it will remain after machining.
Further to this we can conduct finite element analysis of the part and include the porosities in the calculation. Rather than get results from a theoretically perfect model, with CT it is possible to test the real world part which includes all of the real world imperfections.
Let us know some details about the project and we'll get back to you with a quote.
OR3D invest in long range 3D scanning solution
OR3D are pleased to add the Reigl VZ400i to their fleet of 3D laser scanners. Its performance allows increases in data capture times per setup, and has ability to record objects over 800m away. This instrument has provided a step change in reducing c...
As is: A model made to be very accurate to the scan data, including all it’s imperfections existing on the real component.
Design intent: A model that has been reverse engineered from scan data to what is believed to be the original design.
See our Reverse Engineering services page for more information.
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