NDT & Metrology

Porosity Analysis: How to See an Internal Defect without Destructive Testing using 3D x ray

Traditionally, to determine the porosity within a part would require destructive testing. CT scanning is a NDT method, utilizing x-ray technology that can detect internal and external features and flaws without destroying the part, or applying any pressure or fixtures. Industrial CT scanning (3D x-ray) is used to detect flaws inside a part such as porosity (void analysis), inclusions or cracks before a failure can occur. CT scanning allows you to inspect and locate problem areas inside a component, and find the point of origin of a failure without needing to disassemble the components.

Metal casting and moulded plastic components are typically prone to porosity because of cooling processes, transitions between thick and thin walls and material properties. Void inspection can be used to find, measure and analyze voids, inside plastic or metal components.  A measurement of each void volume is stored in a chart, and can be exported into an excel file. The CT viewing software allows the user to see where the largest void is (if any), as well as provide an overall percentage of the porosity. Jesse Garant & Associates is a metrology laboratory offering services for industrial ct scanning (3D x-ray), a NDT method. For more information on the CT inspection techniques, visit www.jgarantmc.com


The Next Step

Learn more about JG&A Metrology Center’s Industrial CT Scanning inspection services for industrial applications.