Technical Papers & Journals

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GD&T Dimensional Inspection Certification Test Article John Scheibel, Thirumalai Govindan, Brian Nielsen, Weston Vermillion Michael Ward, David Reich Geometric Dimensioning and Tolerancing (GD&T) based on ASME Y14.5 is the standard method for communicating tolerancing on mechanical parts. Engineering prepared per the requirements of ASME Y14.5 is assessed and a conformance report is produced. This...
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Automated Targetless Photogrammetry for Large Volume Metrology David, Rearick, Marrara, Thaddeus, Morgan, John,Ortman, Robert, Rearick, West, James Craig, Albanese, Dominic, Raphael, Michael, Tardif, Susan The shipbuilding industry has a requirement for periodic in-process dimensional checks that are performed by experienced survey crews. To reduce cycle time and survey labor, there is a desire for an automated metrology solution that can be executed by...
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Development and Preliminary Testing of NPL’s OPTIMUM – A Self-calibrating interferometric large volume coordinate metrology system Ben Hughes This presentation will describe a self-calibrating interferometric large volume coordinate metrology system that can locate and measure multiple targets simultaneously. This technology was developed at NPL to operate in a 10m X 10 m X 5m volume with...
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Precision built Digital Twins for Nuclear Plants Brad Medlin, Charlie Boatwright, Donald Blackmon, In the past when removing large components (for example a 9000HP Reactor Coolant Pump Motor) certain large objects previously identified and removed to replace the component were overly conservative and caused the additional work that was both unnecessary...
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Coordinate Metrology and Nondestructive Testing; Beyond Geometric Dimensioning and Tolerancing David Parker The 2022 CMSC Program included the paper by John W. Palmateer, Computer-Aided Theodolites—a Recollection, which memorialized the development of computer aided theodolites (CAT) at Boeing. It concluded with the commercially successful system being...
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Portable Metrology and Inspection Criteria John Dorsey-Palmateer, Scott Sandwith GD&T is an engineering drawing language establishing consistent communication between design intent, manufacturing, and inspection. Book examples of the inspection are often illustrated by fitting parts within physical gages, and using dimensional...
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Brunson KinAiry Implementation at Lockheed Martin Space Robert Elliott Laser trackers have seen wide use in the aerospace industry since the early 1990s. Users follow several field check methods including manufacturer recommended procedures as well as userdefined procedures. Brunson Instrument Company in conjunction with the...
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Fast Sphere Recognition in point clouds using RGB or Intensity Dr. Christopher Andrew Greer, Dr. Jyani Vaddi Scanning spheres are used for a variety of reasons in large point clouds captured by large volume 3D scanners. A couple these reasons are: point cloud registration, automatic alignment, and creation of geometry and center points for further analysis....
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An Approach towards Layered Process Audit of CMM function for Verification of Aero engine parts Suneel Kumar, Nanda Kumar J, 3 Sandeep Kumar Suchibrata Sen, Vijaya Lakshmi MR Sreelal Sreedhar, GTRE, Bengaluru Layered process audit is an audit methodology involving functional audit by different layers of the management. CMM is an essential part of the precision measurement engineering and paramount function of Quality Assurance practice in an Aero Engine...
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Automated Guided Vehicle for Precise Floor Marking. Raimund Loser, Confema GmbH Modern factories and production areas have to be equipped with a lot of machines and tools for a sufficient production process. Limited space and dependency of different process steps require a precise and optimised positioning of all equipment. Based on...
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