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Many structures, such as aircraft or other lightweight vehicles, are made from thin-ductile structural materials that exhibit low crack-front constraint, which allows for extensive plastic yielding of the material around a crack front. However, many current standards, such as E 399, Test Method for Linear-Elastic Plane-Strain Fracture Toughness K Ic of Metallic Materials, or E 1820, Test Method…
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Over the last three years, single-point spray systems have emerged as a leading form of oil spill dispersant, which has led to the development of a new standard by ASTM International Committee F20 on Hazardous Substances and Oil Spill Response. The standard, F 2465, Guide for Oil Spill Dispersant Application Equipment: Single-Point Spray Systems, is under the jurisdiction of Subcommittee F20.13…
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The ongoing need to deal with oil in stranded ships, especially those in remote areas, is the impetus behind a proposed new standard being developed by ASTM International Committee F20 on Hazardous Substances and Oil Spill Response. One possible response to such a crisis, burning the oil on the ship before it can damage the environment, is the subject of the proposed standard, F 2533, Guide for…
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Representatives of ASTM International will visit the campus of Southern Methodist University (SMU) in Dallas, Texas, on the evening of Nov. 9, 2005, for an hour-long presentation to university students interested in the field of fatigue and fracture. The session will focus on the technical standards currently in use by this discipline as well as the ability of students and professionals to be…
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ASTM International Committee C24 on Building Seals and Sealants is currently working to fill a need for a weatherproofing sealant field test standard. The result, proposed standard WK7800, Guide for a Non-Destructive, Continuous, Field Test of Installed Weatherproofing Sealant, features a field test that has been used by sealant professionals for years, but has not, up to this point, been…
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ASTM International Committee C24 on Building Seals and Sealants is now working on a proposed new standard, WK6920, Fatigue Resistance of Structural Silicone. The standard, which is under the jurisdiction of ASTM Subcommittee C24.20 on General Sealant Standards, is intended to serve as an enhancement to current performance requirements for structural silicones and to help users ascertain that…
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In the past, the only measurement used to determine whether sealants could endure a great deal of foot traffic was hardness. Because research presented at symposia and from the field has shown that other factors need to be considered in the design and use of traffic sealants, ASTM International Committee C24 on Building Seals and Sealants has a new proposed standard that encompasses a wider range…