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As mechanical objects, gears have been around for so long that people may take them for granted. But gears are sophisticated parts that play a vital role in
Sneezes, rain clouds, and ink jet printers: They all produce or contain liquid droplets so tiny it would take several billion of them to fill a liter bottle
Researchers at the National Institute of Standards and Technology (NIST) have developed a dramatically improved laser-based instrument that measures the
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
Objective - To develop, utilize, and analyze test methods and protocols for characterizing the feedstocks, machines, and processes in metal-based additive manufacturing to enable optimum usage and to reduce the cost and time needed for qualification. What is the Technical Idea? Qualification of AM
Objective Data plays the most critical role in linking AM lifecycle and value chain activities and streamlining the AM development process. While the AM data from a single build is essential for establishing part traceability, when methodically collected, the full processing history of thousands of
Laser interferometry, which measures distances in terms of light wavelength, provides the backbone of top-level length metrology in industry and science. This project develops techniques to facilitate the tie between interferometer-based length measurements and the SI definition of length (in terms
Patrick Egan, Eric S. Stanfield, John R. Stoup, Christopher W. Meyer
Recent developments in diameter metrology at NIST have improved the dimensional characterization of piston–cylinder assemblies (PCAs) to unprecedented precision
A method is described to measure the thermal expansion coefficient of fused quartz glass. The measurement principle is to monitor the change in resonance
Since 2006, the Nanomechanical Properties Group has pioneered the use of Laser Doppler Vibrometry (LDV) to calibrate the stiffness of AFM cantilevers using the