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Mercury emissions from flue gases in coal-fired power plants are a large source of atmospheric mercury in the United States, but no standard for determination of mercury adsorption currently exists. One promising method of controlling these emissions involves the injection of powdered activated carbon into the flue gas. A proposed new ASTM International standard would evaluate the performance of…
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ASTM International is a recognized resource for snow skiing safety. From technical standard like test methods and specifications to state-of-the-art research, documents offered by ASTM International guide much of the safety measures available in skiing today. A fact sheet on ASTM International and Ski Safety can be found at www.astm.org/skiing . Snow Skiing Standards ASTM International Committee…, Skiing Trauma and Safety, , published in March 2009, features 21 papers written by individuals from many disciplines, all of who are interested in snow sports safety. Some of the papers included are: - Do Helmets Reduce Fatalities or Merely Alter the Patterns of Death?; - Head Kinematics During Experimental Snowboard Falls: Implications for Snow Helmet Standards; - Pediatric Head and Neck Injuries in Snow Sports:…
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Honeycomb ceramics, porous with linear hollow channels, are being used worldwide in automotive catalytic converters and as diesel particulate filters for trucks. Flexural testing of this type of ceramics is addressed in a new ASTM International standard, ASTM C1674 , Test Method for Flexural Strength of Advanced Ceramics with Engineered Porosity (Honeycomb Cellular Channels) at Ambient…
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New Advanced Ceramics Standards from ASTM Cover Fracture Mirror Size Analysis, Tensile Strength DataSubcommittee C28.01 on Mechanical Properties and Performance, part of ASTM International Committee C28 on Advanced Ceramics, has recently approved two new standards, ASTM C1678 , Practice for Fractographic Analysis of Fracture Mirror Sizes in Ceramics and Glasses, and ASTM C1683 , Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics., ASTM C1678 —Bringing Consistency to Fracture Mirror Size Analysis, Fracture mirror size analysis is a powerful quantitative tool for the interpretation of broken ceramic and glass articles. While this type of analysis can be used to determine the stress in a part at the instant of fracture, inspection and interpretation procedures have often varied, resulting in uncertainty in stress estimates. ASTM C1678, Practice for Fractographic Analysis of Fracture Mirror…, ASTM C1683 —Scaling Strength Values, ASTM C1683, Practice for Size Scaling of Tensile Strength Using Weibull Statistics for Advanced Ceramics, provides methodology to convert fracture strength parameters estimated from data obtained with one test geometry to strength parameters representing other test geometries. Stephen Duffy, chair of civil engineering, Cleveland State University, and C28 member, says that companies producing…
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Ceramic and glass companies, as well as universities and government laboratories, will be the primary users of a new ASTM standard that allows for the flexural strength determination of components made in a round shape or after finish machining with minimal waste. The standard, ASTM C1684 , Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature-Cylindrical Rod Strength, was…
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ASTM International Committee C28 on Advanced Ceramics and the American Ceramic Society are co-sponsoring a workshop, Needs and Opportunities for Strength and Fracture Standards at Micro and Nano Scales, on Jan. 27, 2008, from 1:00 to 5:00 p.m. at the Hilton Daytona Beach Resort in Daytona Beach, Fla. The workshop will be held in conjunction with the ASTM Committee C28 meetings to be held Jan. 26-…
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A new ASTM International standard, F 2546 , Test Method for Snowboard Step-in Bindings, will contribute to the safety of snowboarders by describing the steps required to evaluate a step-in snowboard binding-boot system. F 2546 is under the jurisdiction of Subcommittee F27.85 on Snowboarding, which is part of ASTM International Committee F27 on Snow Skiing. “Leading snowboard binding…
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ASTM International Subcommittee C28.07 on Ceramic Matrix Composites has formed a task group to address the evaluation of fiber-reinforced ceramic matrix composite structures for a future generation of nuclear energy systems. Subcommittee C28.07 is under the jurisdiction of Committee C28 on Advanced Ceramics. The new task group was formed at the January meeting of Subcommittee C28.07. To advance…