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Three-dimensional laser scanning is an emerging technology that holds great promise for capturing dimensionally accurate information about an object or scene by collecting millions of dense measurements very quickly. ASTM International Committee E57 on 3D Imaging Systems is developing new standards for this technology, including ASTM E2761, Specification for 3D Imaging Data Exchange. ASTM E2761,…
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ASTM grain size is a property written into many specifications for metals, with finer grain sizes generally indicating better mechanical properties, such as formability. While measuring certain materials for such properties can be difficult, electron backscatter diffraction can provide precise determinations as well as give information on grain size distribution and statistics. A new ASTM…
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Air permits from regulatory agencies, such as the U.S. Environmental Protection Agency (USEPA), often require the measurement of a plume's opacity as the plume is emitted from a stationary point source (for example, smokestacks) in the outdoor ambient environment. While such opacity is often visually measured by human observers as “certified smoke readers,” an opacity measurement method using…
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A recent revision to ASTM International standard E384 , Test Method for Knoop and Vickers Hardness of Materials, expands the range of its coverage. The standard is under the jurisdiction of Subcommittee E04.05 on Microindentation Hardness Testing, part of ASTM International Committee E04 on Metallography. The revision incorporates ASTM E92 , Test Method for Vickers Hardness of Metallic Materials…
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Three dimensional image system technology is now used in a wide variety of industries, including construction, mapping, manufacturing, mining and forensics. For all of these industries, safe usage of 3D imaging equipment is a top priority. However, until the approval of a new ASTM International standard, no safety guidelines specifically oriented toward 3D image system technology existed. The…
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The measurement of acid mist is becoming increasingly important due to recent actions taken by the U.S. Environmental Protection Agency on fine particles (2.5 micrometers in diameter and smaller) that are unhealthy to breathe. ASTM International Committee D22 on Air Quality is currently working on a proposed standard for measuring acid mists that come from combustion sources, WK22846 , Test…
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A new ASTM International standard provides guidance for using data generated by ASTM standards in testing for asbestos in surface dust. ASTM D 7390 , Guide for Evaluating Asbestos in Dust on Surfaces by Comparison Between Two Environments, was approved by ASTM International Committee D22 on Air Quality, part of Subcommittee D22.07 on Sampling and Analysis of Asbestos. According to James Millette…
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A new ASTM International standard will provide a method to consistently address indoor air quality complaints in residential buildings and to guide IAQ investigations in an efficient manner. The standard, D 7297 , Practice for Evaluating Residential Indoor Air Quality Concerns, is under the jurisdiction of Subcommittee D22.05 on Indoor Air, part of ASTM International Committee D22 on Air Quality…
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Laboratories that measure fibers in workplace samples will be the most likely users of two new ASTM International standards: D 7200 , Practice for Sampling and Counting Airborne Fibers, Including Asbestos Fibers, in Mines and Quarries, by Phase Contrast Microscopy and Transmission Electron Microscope; and D 7201 , Practice for Sampling and Counting Airborne Fibers, Including Asbestos Fibers, in…
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ASTM International Committee E57 Will Meet Important Industry Need for Consensus Standards, ASTM International, one of the largest voluntary standards development organizations (SDO) in the world, has announced the formation of ASTM Committee E57 on 3D Imaging Systems. The new standards initiative was driven by the cooperative efforts of the National Institute of Standards and Technology (NIST) and stakeholders within the 3D imaging systems sector. Committee E57 will focus on the…, Powerful Tools for Measurement and Information Capture, 3D imaging systems are used to rapidly capture three-dimensional information of a scene or object. This information is often provided in the form of “point clouds” (grouping of points) with associated color and intensity data. Usage of 3D imaging systems has steadily increased during the past 10 years as the devices have become important measuring tools in industrial sectors such as construction…, Dynamic, Growing Technology in Need of Consensus Standards, 3D imaging technology has been in existence for several decades. Current systems include laser scanners, 3D optical scanners, 3D range cameras, and 3D flash laser radars (LADARs). Although these systems have become more established during the last decade, there are presently no standards for evaluating the performance of 3D imaging systems or the related end projects derived from the data they…, ASTM International: Meeting the Call for a Comprehensive Standards Program, Following a NIST workshop of stakeholders from the 3D imaging systems sector held in March, ASTM International was chosen in a competitive bid process to be home of the new standards initiative. With a proven consensus process and state-of-the-art standards development infrastructure, ASTM is well suited to meet the 3D imaging industry’s need for comprehensive standards. ASTM Committee E57 will…