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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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Chemical plants and contract and research laboratories will all be likely users of a new ASTM International standard, D 7183 , Test Method for Determination of Total Sulfur in Aromatic Hydrocarbons and Related Chemicals by Ultraviolet Fluorescence. D 7183 was developed by Subcommittee D16.04 on Instrumental Analysis, part of ASTM International Committee D16 on Aromatic Hydrocarbons and Related…
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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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When ASTM International Committee F38 on Unmanned Aircraft Systems was formed in 2003, it is safe to say no one on the committee was thinking about catapults and trebuchets. However, a study of these medieval devices was integral to the development of a new F38 standard, F 2585 , Specification for Design and Performance of Pneumatic-Hydraulic Unmanned Aircraft System (UAS) Launch System. F 2585…
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All interested parties are invited to attend the meetings of ASTM International Committee F38 on Unmanned Aircraft Systems on Nov. 13 and 14, during the November Committee Week in Atlanta, Georgia. The subjects to be discussed at the meeting are sense-and-avoid, terminology, launchers, visual range flight practices, commercial pilot practices and manufacturing quality assurance practice. One trio…
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Having the necessary documentation to maintain and repair any sort of aircraft is of the utmost importance. With this in mind, ASTM International Committee F38 on Unmanned Aircraft Systems has developed a new standard, F 2584 , Practice for Maintenance and Development of Maintenance Manuals for Light Unmanned Aircraft System (UAS). The new practice, which is under the jurisdiction of Subcommittee…
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The U.S. Department of Defense recently adopted a commercial standard to govern the performance of automated sense and avoid systems it procures for its unmanned aircraft. The standard, ASTM F 2411, Specification for Design and Performance of an Airborne Sense-and-Avoid System, was developed last year by ASTM Internationals F38 Committee on Unmanned Aircraft Systems, whose members represent a…
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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…
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ASTM International standard D 1555, Test Method for Calculation of Volume and Weight of Industrial Aromatic Hydrocarbons and Cyclohexane, and its metric equivalent, D 1555M, have been revised by Committee D16 on Aromatic Hydrocarbons and Related Chemicals. The revision affects the basis for correcting volume from any temperature to 60 F (or 15 C using D 1555M), as well as calculating the weight…