The iNSIde View

North Star Imaging Blog

The DICONDE Standard

Mark Aziz

Senior Software Engineer

ASTM1 defines DICONDE as “Digital Imaging and Communication in Nondestructive Evaluation”, and it is a standard for handling, sharing, storing and transmitting information between DICONDE compliant systems. The ASTM DICONDE committee (E07.11) was formed in 1999 to put a NDT standard (DICONDE2) that is based on the medical (DICOM3

Computed Tomography Inspection of Additive Manufactured Components

Pat Carlson

Applications and Training Specialist - Level III

Rapidly expanding into production manufacturing, additive manufacturing (AM) has gained incredible interest in all industry facets. From aerospace applications to simple one off consumer home builds, this technology has immense versatility and use. In additive manufacturing, objects are built by adding layer upon layer of material. With all of these materials in use and knowing that many of these components will be created for critical end use applications in aerospace, medical, or automotive industries to name a few. The challenge becomes; how does the manufacturer inspect these products to ensure safety and…

Taking 3D X-ray Inspection to a New Dimension - 4D CT

Matt Zachman

Inspection Services Lab Technician

4D CT will give you the same benefits as 3D CT, but with the added bonus of motion and time. Sample motion can be captured by either two different scanning techniques, static or dynamic.

Did you try binning it?

Nate DeRoo

Inspection Services Lab Technician

What is pixel binning? Pixel binning is a mode that the X-ray detector can run in that takes a 2x2 matrix of pixels and combines them to create one larger pixel. This is done in the hardware internally in the detector so there is no additional processing time for the computer. There are a number of benefits to using pixel binning including better signal level, higher contrast, and faster framerates. The down side to using pixel binning is that there is a loss in image resolution. This decrease in resolution may not have much of a negative effect though, as the contrast sensitivity that…

A New Development for Significantly Reducing Ring Artifacts in CT Scans

Brett Muehlhauser

R&D Technical Fellow - ASNT Level III

During a CT scan, pixels that do not respond to the variations in product related attenuation will cause consistent or intermittent tracks along scan trajectories which end up as rings in a CT reconstruction.

Advantages of Using Advanced Industrial X-Ray Scanning Styles (Vortex, Subpix, and Mosaix)

Anthony Talberg

Technical Trainer

Standard cone beam scanning is sufficient for many applications, but what about the applications where you cannot fit the part in a single detectors view?

Measurement Traceability

Joe Schlecht, PhD

Senior Software Engineer

According to the International Vocabulary of Basic and General Terms in Metrology (VIM) [1], the traceability of a measurement result is demonstrated through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty. This means that not only is it necessary to use a reference standard of length which has an unbroken chain of calibrations, but the uncertainty of the resulting measurements must include the uncertainty of all the links in the calibration chain.While the VIM definition is clear about what is needed for the traceability of a measurement result, it does not…

New Guy to NDT

Ross Johnson

Sales Representative

My name is Ross Johnson and I am the “New Guy” to NDT. Now when I say “new” I mean BRAND NEW. After college I started a woodworking business and for a few years I built everything and anything from skateboards to banjo necks. I had jobs in machine shops running Bridgeport’s and lathes and then I moved into Product Development. My time in Quality Control was always limited to comparators, CMM and gages. And because there were never any requirements for non-destructive testing in our industry, I never learned about the different types of NDT. My first experience with X-ray was the X-ray I had of my broken pinky…

NSI West Coast Operations in Full Swing

Ben Connors

Inspection Services Manager

In the fall of 2015, NSI opened an Inspection Services and systems demonstration lab located at 16170 Scientific Way in Irvine, California. Now that the paint is dry and the construction complete, we were fortunate to host the first of many open house events on February, 24th as well as an overflow event the following week. The event was put on in conjunction with Instron, our sister company, who makes world class material testing systems. Attendees were hosted and saw presentations from NSI on CT scanning of additive manufactured parts as well as live demos of digital X-ray and CT scanning technology. Instron presented…


Guy Tolley & Sheng Yue

UK Sales and Inspection Services

X-ray micro computed tomography (micro-CT) is a powerful tool for material characterization as it can non-destructively and non-invasively image the internal structure of an object. This enables the wide range of characterization and inspection applications in the areas of biomedical, aerospace, automotive, and many more.With the recent development of novel reconstruction algorithms, we can not only image the object in 3D but also record how its structure is varying over a period (i.e. 4D imaging, as a software add-on offered by NSI).In a typical computed tomography (CT) set-up, a micro-CT image is generated…

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