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A new ASTM International standard, adopted from an American Concrete Institute test method, will be used to help ensure the safety of construction projects. ASTM C1741 , Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout, is under the jurisdiction of Subcommittee C09.41 on Hydraulic Cement Grouts , part of ASTM International Committee C09 on Concrete and Concrete…
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Piston ring/liner interface can contribute as much as half the total friction loss in internal combustion engines, with the resulting wear leading to reduced energy efficiency and raised emissions. A new ASTM International standard provides a method to more accurately measure small amounts of wear on curved piston ring segments and their counterfaces after lubricated bench-scale testing. “Coupled…
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ASTM Committee G02 on Wear and Erosion is including a field trip in the plans for its Dec. 8-9 meeting in Jacksonville, Fla. Committee members will be visiting the Tribology Laboratory in the mechanical engineering department at the University of Florida in Gainesville. The Tribology Laboratory is actively involved in a wide variety of tribological research and tribology education projects. The…
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A new ASTM standard will be useful to slide and engine companies, as well as makers of bushing materials, in studies that involve the measurement of system friction forces. The new standard, ASTM G203 , Guide for Determining Friction Energy Dissipation in Reciprocating Tribosystems, was developed by Subcommittee G02.50 on Friction, part of ASTM International Committee G02 on Wear and Erosion.…
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Invented in the early 1990s, the tomographic gamma scanner is used in the nondestructive assay of radioactive waste contained in drums or cans. In the last 10 years, TGS technology has been industrialized, with systems operating in South Korea, the United States and Europe. A new ASTM International test provides users with a means of streamlining TGS procedures and practices, and it will be…
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A new ASTM International standards developing activity, Subcommittee E44.20 on Glass for Solar Applications, was formed during a virtual meeting on Sept. 29. Meeting participants, including government representatives, equipment and product manufacturers and members of ASTM International Committees E44 on Solar, Geothermal and Alternative Energy Sources and C14 on Glass and Glass Products approved…
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Standards relating to the performance of photovoltaic (PV) modules have historically focused on initial qualification testing and not issues of durability and functional service life. Subcommittee E44.09 on Photovoltaic Electric Power Conversion is now working on a proposed new standard that will cover these long-term issues: ASTM WK25362 , Practice for Photovoltaic Module Reliability Assessment…
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All interested participants are invited to attend a virtual organizational meeting for a new ASTM International activity on solar glass on Tuesday, Sept. 29, at 1:00 p.m. EDT. Representatives from the United States Department of Energy, ASTM International Committee E44 on Solar, Geothermal, and Other Energy Sources, and ASTM International Committee C14 on Glass and Glass Products will be among…
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In response to requests from fuel producers around the world, ASTM International Committee C26 on Nuclear Fuel Cycle has developed a standard for using the total evaporation method to determine uranium or plutonium composition. The new standard, C 1672 , Test Method for Determination of Uranium or Plutonium Isotopic Composition or Concentration by the Total Evaporation Method Using a Thermal…
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Neutron absorbers have been used for criticality control in spent nuclear fuel pools and in spent fuel transportation casks for decades. However, since the late 1980s, as spent fuel storage pools have been filled, utilities have transferred spent fuel into dry dual-purpose (storage/transportation) canisters. The neutron absorbers used in dual-purpose canisters are subjected to different operating…