Featured Product
This Week in Quality Digest Live
Metrology Features
Catherine Cooksey
Ensuring that measurements aid the broader industrial and scientific communities that depend on them
MIT News
They can quickly learn to optimize building microclimates for both energy consumption and user preference
Loretta Marie Perera
3D scanning and printing an impossible-to-find, 100-year-old distributor cap
NVision Inc.
Laser scans of large and small surfaces performed in just three days
Douglas Allen
Removing the random noise component from the observation, leaving the signal component

More Features

Metrology News
Designed for precise measurement of form, featuring new levels of flexibility and speed
Single- and three-axis shop-floor dimensional measuring machines for industrial manufacturers
Precision optical instrument helps ventilator maker increase specialty valve production in response to shortage
Allows team to focus on quality control in dimensional measurements and overall machining process
Contactless sensors measure rotating shafts in industrial benchtop and test and measurement applications
3DCS Design Variation Analyst, 3DCS Viewer, and 3DCS Mechanical Variation Modeler create a scalable solution to tolerance analysis and simulation
Operators can monitor full process, including cooling cycle, which can be altered to change the microstructure of parts to suit needs
Infrared cameras, structured light scanning, and electron imaging provide extensive and detailed data on every part

More News

NIST

Metrology

NIST 3D Laser Scanner Standard Expected Soon

Leading scanner manufacturers involved in development of draft standard

Published: Monday, June 26, 2017 - 12:33

(NIST: Gaithersburg, MD) -- It’s no surprise that tiny precision objects, such as the parts inside your smartphone, must be measured with laser technology in order to fit together and work properly. But some of the largest structures people depend on every day—including airplane wings and bridge components—are also measured to exacting standards by three-dimensional laser scanners.

Despite the importance of such measurements, however, there is no comprehensive standard or agreed-upon suite of tests to judge how well those 3D instruments perform—although the American Society for Testing and Materials International (ASTM) has been working for years on a draft standard.

That’s why PML scientists recently designed and built a calibration facility specifically set up for conducting the approximately 100 proposed tests in the ASTM draft standard. Then they invited all the leading 3D scanner manufacturers to perform measurements in a head-to-head runoff. In May of 2016, major manufacturers from around the world converged at NIST to put their scanners through the paces.

3D laser scanner

That showdown not only revealed differences among different manufacturers when measuring exactly the same structures, but provided new perspectives on testing, leading to a revision of the draft standard. That document is in the process of being voted on, and researchers from PML’s Dimensional Metrology Group expect the revised version to be adopted by the end of 2017.

“If someone in an organization wants to know which scanner to buy, he or she will look at the specs,” said one runoff participant. And with an official standard for 3D laser scanner performance, “the specs will mean the same thing because they were tested against the same type of standards and the same type of objects.”

Think about that the next time you’re driving over a bridge or looking out an airplane window.

Discuss

About The Author

NIST’s picture

NIST

Founded in 1901, The National Institute of Standards and Technology (NIST) is a nonregulatory federal agency within the U.S. Department of Commerce. Headquartered in Gaithersburg, Maryland, NIST’s mission is to promote U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.