8 ALTAIR Inspire Cast Tips: Detecting Porosity Problems

Article by Drew Tucker on Apr 16, 2020

Welcome to part six in our series for getting started with Altair Inspire Cast ! In this quick tip, you’ll learn about tools that can help diagnose porosity problems in your casting.

Tip #6: Understanding porosity

Having porosity issues with your casting? The answer to that question is “yes” 99% of the time it’s asked - so you’re not alone! Altair Inspire Cast has some excellent tools to help you diagnose and correct these defects. First, start by running a Solidification analysis to look at the “porosity” results for your part. 

Altair Inspire Cast porosity problems

In the example above you can see that three porous areas within the casting will result in voids. Let’s focus on the large void on the left. This has a high potential to cause the part to fail. To solve this problem, we’ll need some additional information from the Analysis Explorer, specifically the Solidification Modulus value at the same spot the porosity occurred. By placing a cross-section through the center of the part, and using a callout at that spot, we can get our value. (highlighted red boxes in the image below)

Altair Inspire Cast Analysis Explorer

We can now use the Solidification Modulus value in our riser tool to size the riser.

Altair Inspire Cast Solidification Modulus

Altair Inspire Cast Porosity Tutorial

Depending on how deep the porosity is buried in your casting, you may need to increase the size a little. This is, however, an excellent starting point for solving your porosity issues. So, with very little modification, we can appropriately size and place risers to eliminate porosity, using the tools provided in Altair Inspire Cast.

In our next blog in our series, you’ll learn how to add custom materials to the database. Check out how easy it is to do it yourself here

If you have any questions or want to know more information about other Altair Simulation products like Inspire and HyperWorks please contact us .

About Drew Tucker

Drew Tucker is an Application Engineer for Manufacturing Solutions at Altair. He is the lead for Altair's explicit manufacturing simulation solutions in the Americas, and is heavily involved in metal casting & prototyping. Drew is a graduate from Western Michigan University's Engineering College and has over 10 years experience in manufacturing sector. Drew is focused on bridging the gap between additive and traditional manufacturing technologies specifically, through the use of simulation software.

View all posts by Drew Tucker


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