The Advanced Dimensional Measurement Systems (ADMS) project provides the measurement science and infrastructure needed by industry to adopt new dimensional measurement technology. We accomplish this by investigating new measurement systems, characterizing their errors, developing and codifying instrument test methods into documentary standards, designing high accuracy dimensional artifacts, and, as needed, creating new measurement services.
New dimensional measurement technologies provide significant benefits to industry such as increasing measurement throughput, enabling new manufacturing process (such as additive manufacturing) and providing more detailed part information for manufacturing process improvement. However, before purchasing and using new measurement technology, the user must understand the capabilities and performance of the instrument. This is not a simple task and, for much of U.S. industry, can be sizable barrier to the adoption of advanced measurement systems.
The ADMS has unique assets and capabilities that we apply to these measurement challenges, including
The ADMS regularly partners with U.S. industry to develop tests for new instruments as well as to provide U.S. manufacturers of measurement equipment access to our unique facilities early in the development process, helping them shorten the time to market. Through these industrial contacts, the ADMS exchanges the vital information regarding the measurement technologies and their uncertainly sources that is critical to developing documentary standards.
Designed, assembled, tested, and calibrated a prototype calibration artifact that will eventually be used to realize test lengths for an upcoming ASTM E57 standard for the performance evaluation of large volume 3D laser scanners. The artifact is comprised, primarily, of precision matte finish spheres, arranged in a 6 m x 6 m square grid.
Held laser-scanner runoff and ASTM 57 meeting as part of the effort to complete a draft standard for the volumetric performance of large volume 3D laser scanners. Participating manufacturers, which included all except one of the major manufacturers of this equipment, brought or sent their equipment to our facilities that were designed, assembled, and calibrated specifically for this purpose. There were three full days of testing across two labs containing multiple structures that were used for a large number of tests. (https://www.nist.gov/news-events/news/2016/05/3d-laser-scanner-runoff-p…)
Publication of ISO 14253-5:2015 “Geometrical product specifications (GPS) -- Inspection by measurement of workpieces and measuring equipment -- Part 5: Uncertainty in verification testing of indicating measuring instruments” and ISO 1:2016 “Geometrical product specifications (GPS) -- Standard reference temperature for the specification of geometrical and dimensional properties.” The project team did a substantial amount of work, including writing, towards the development of these standards.
Installation of a new high-accuracy CMM that will be used to improve the accuracy of Big-G measurements.