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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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New Standard for Chemical Permeation Testing Approved by ASTM Personal Protective Clothing CommitteeChemical protective clothing has been widely used to protect skin from health hazards that can be found in the workplace or during a terrorist attack. A new ASTM International standard provides directions in using a computer program, called a permeation calculator, to analyze data following a permeation test, in order to determine when chemicals have gotten inside the clothing. The new standard,…
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Due to risk of infection from blood-borne pathogens such as human immunodeficiency virus and hepatitis C, hypodermic needle sticks pose a life-safety risk to healthcare professionals, law enforcement officials, sanitation workers and others. A new ASTM International standard addresses the unique mechanics of hypodermic needle puncture as related to protective clothing. ASTM F2878 , Test Method…
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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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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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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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All interested parties are invited to participate in the standards developing work of Subcommittee F23.50 on Certification and PPE Interoperability, part of ASTM International Committee F23 on Personal Protective Clothing and Equipment. The subcommittee, which was formed in 2009, is currently working on a proposed new standard, WK27616 , Practice for a Product Certification Process. According to…
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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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A proposed new ASTM International standard for liquid threats on protective clothing will cover the specific needs of law enforcement officers. The new standard, ASTM WK25965 , Test Method for Liquid Threat Sprayed on a Mannequin, is being developed by Subcommittee F23.30 on Chemicals, part of ASTM International Committee F23 on Personal Protective Clothing and Equipment. Fire and hazardous…