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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 A06 on Magnetic Properties has approved the first in a series of proposed standards on permanent magnet materials. The new standard, A 1054 , Specification for Sintered Ceramic Ferrite Permanent Magnets, as well as the other proposed standards, are under the jurisdiction of Subcommittee A06.02 on Material Specifications. While ASTM has long had standards covering…
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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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ASTM International Committee B08 on Metallic and Inorganic Coatings has recently approved a revision of one of its most important standards, B 633 , Specification for Electrodeposited Coatings of Zinc on Iron and Steel. B 633 is under the jurisdiction of Task Group B08.08.04 on Soft Metals, which is part of Subcommittee B08.08 on Metallic Coatings. Zinc coatings are used to provide a sacrificial…
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ASTM International Committee E07 on Nondestructive Testing has approved a new standard that can be used for the same applications as the now-cancelled MIL-STD-2154, Process for Inspection, Ultrasonic, Wrought Metals. The new standard, E 2375 , Practice for Ultrasonic Examination of Wrought Products, is under the jurisdiction of Subcommittee E07.06 on Ultrasonic Testing Procedures. Practice E…
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ASTM International Committee E07 on Nondestructive Testing has developed a new standard, E 2491, Guide for Evaluating Performance Characteristics of Phased-Array Ultrasonic Examination Instruments and Systems. Guide E 2491 , which is under the jurisdiction of Subcommittee E07.06 on Ultrasonic Method, is intended to be used for comparing instruments and systems, as well as for detecting long-term…
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New ASTM Nondestructive Testing Standard Presents Digital Images for Inspection of Aluminum CastingsDeveloping new ASTM standard E 2422, Reference Digital Images for Inspection of Aluminum Castings, wasn’t just a matter of digitizing the images used in current standard E 155, Reference Radiographs for Inspection of Aluminum and Magnesium Castings. According to Michael Horky, principal level III, RT, Boeing Commercial Airplanes, to create the new standard, task group members had to understand…
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A new, two DVD set, "Reference Radiograph E 2422, Standard Digital Reference Images for Inspection of Aluminum Castings," is now available for purchase from ASTM International. The images illustrate the types and degrees of discontinuities that may be found in aluminum-alloy castings. This two DVD set consists of 13 digital files, software to load the desired format, and specific instructions…