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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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All interested parties are invited to attend a Sandwich Construction Workshop on Wednesday, March 12, at 4:30 p.m., in Melbourne, Fla. The workshop is being held by Subcommittee D30.09 on Sandwich Construction, part of ASTM International Committee D30 on Composite Materials. Committee D30 is meeting in conjunction with Marine Applications of Composite Materials from March 12-14 at the Crowne…
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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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A new ASTM International standard will enable composite end users and materials suppliers within the aerospace industry to perform an important test for polymer matrix composites within guidelines set by the U.S. Federal Aviation Administration. The standard, D7028 , Test Method for Glass Transition Temperature (DMA Tg) of Polymer Matrix Composites by Dynamic Mechanical Analysis (DMA), is under…
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ASTM International Committee F12 on Security Systems and Equipment has approved a new standard, F 2656 , Test Method for Vehicle Crash Testing of Perimeter Barriers. The new test method, developed by Subcommittee F12.10 on Systems, Products and Services, provides a range of vehicle impact conditions, designations and penetration performance levels for the testing of perimeter barriers that are…
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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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Subcommittee D30.05 on Structural Test Methods, part of ASTM International Committee D30 on Composite Materials, has been standardizing a series of methods that are related to the analysis and substantiation of mechanically fastened joints composed of composite materials. The latest in this series of standards, D 7332/D 7332M , Test Method for Measuring the Fastener Pull-Through Resistance of a…
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It has become a common scene: a driver in a parking lot suddenly loses control of a car, sending it into a storefront or other pedestrian area. In an effort to minimize the injury and damage caused by such crashes, ASTM International Committee F12 on Security Systems and Equipment is developing a proposed new standard, WK13074 , Test Method for Crash Testing of Low Speed Pedestrian Barriers. The…
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ASTM International Committee F12 on Security Systems and Equipment invites all interested users, specifiers and industry personnel to participate in the development of a proposed new standard, WK11191 , Test Method for Boat Barriers. WK11191 is under the jurisdiction of Subcommittee F12.10 on Systems, Products and Services. The purpose of the WK11191 is to create requirements for any land-based…