ASTM Standards for Monolithic and Composite Advanced Ceramics: Industrial, Governmental and Academic Cooperation

1996 ◽  
Author(s):  
Michael G. Jenkins ◽  
George D. Quinn
Keyword(s):  
International Standards ◽  
Material Behavior ◽  
Market Place ◽  
Advanced Ceramics ◽  
Component Reliability ◽  
Material Development ◽  
Heat Engines ◽  
Optimum Material ◽  
American Society ◽  
Primary Standards

Monolithic and composite advanced ceramics have reached sufficient levels of material development to warrant serious consideration for applications in advanced heat engines. These applications require optimum material behavior with physical and mechanical property reproducibility, component reliability, and well-defined methods of data treatment and materials analysis. As new materials are introduced into the market place, these issues are best dealt with via standard methods. The primary standards writing organization in the U.S. is the American Society for Testing and Materials (ASTM), a private, nonprofit corporation which relies upon the voluntary cooperation of industry, government, and academe to develop standards by consensus. ASTM Committee C28 “Advanced Ceramics” has been active since 1986 and currently has 16 standards “on the books” with 17 standards in the balloting process. Overviews of the five subcommittees of C28 are presented. Accomplishments to date are discussed, as well as future activities, including a brief summary of joint cooperative efforts with international standards formulating organizations.

scholarly journals Development of ASTM Standards in Support of Advanced Ceramics — Continuing Efforts

1998 ◽  
Author(s):  
Charles R. Brinkman
Keyword(s):  
International Standards ◽  
Material Behavior ◽  
Composite Ceramics ◽  
Advanced Ceramics ◽  
Component Reliability ◽  
Nondestructive Examination ◽  
Analysis And Design ◽  
Optimum Material ◽  
American Society ◽  
Statistical Analysis And Design

An update is presented of the activities of the American Society for Testing and Materials (ASTM) Committee C-28 on Advanced Ceramics. Since its inception in 1986, this committee, which has five standard producing subcommittees, has written and published over 32 consensus standards. These standards are concerned with mechanical testing of monolithic and composite ceramics, nondestructive examination, statistical analysis and design, powder characterization, quantitative microscopy, fractography, and terminology. These standards ensure optimum material behavior with physical and mechanical property reproducibility, component reliability, and well-defined methods of data treatment and material analysis for both monolithic and composite materials. Committee C-28 continues to sponsor technical symposia and to cooperate in the development of international standards. An update of recent and current activities as well as possible new areas of standardization work will be presented.

Revising and Validating Spectral Irradiance Reference Standards for Photovoltaic Performance Evaluation

Solar Energy ◽  
2002 ◽  
Author(s):  
Daryl R. Myers ◽  
Keith Emery ◽  
C. Gueymard
Keyword(s):  
Photovoltaic Performance ◽  
International Standards ◽  
Spectral Irradiance ◽  
International Electrotechnical Commission ◽  
Spectral Radiation ◽  
Atmospheric Physics ◽  
Additional Information ◽  
American Society ◽  
Consensus Standard ◽  
International Standards Organization

In 1982, the American Society for Testing and Materials (ASTM) adopted consensus standard direct-normal and global-tilted solar terrestrial spectra (ASTM E891/E892). These standard spectra were intended to evaluate photovoltaic (PV) device performance and other solar-related applications. The International Standards Organization (ISO) and International Electrotechnical Commission (IEC) adopted these spectra as spectral standards ISO 9845-1 and IEC 60904-3. Additional information and more accurately representative spectra are needed by today’s PV community. Modern terrestrial spectral radiation models, knowledge of atmospheric physics, and measured radiometric quantities are applied to develop new reference spectra for consideration by ASTM.

An Approach to Development of Manufacturing Data Report According to International Standards

2018 ◽  
Vol 879 ◽  
pp. 248-253
Author(s):  
Papatsorn Singhatham ◽  
Chokchai Singhatham ◽  
Niphaporn Panya ◽  
Salakchit Pukjaroon
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Petrochemical Industry ◽  
Industrial Sector ◽  
International Standards ◽  
Maintenance Management ◽  
Clear Pattern ◽  
Standard Format ◽  
Equipment Operation ◽  
American Society

The research purposes to design, analyze and build a report (MDR) integrity. To use as the MDR prototype in accordance with international standards for industrial factories. The MDR is important to the operator of equipment, the factories, and petrochemical industry because of it is an index for the quality assurance, quality control of fabrication and planning of maintenance management (material upgrade/ equipment change) for safety during equipment operation. When the equipment has a problem we can check for cause from the fabrication history data on MDR. A survey was developed for people concerned with the MDR, totaling 141 people from 58 factories in Thailand industrial sector for find out the demands and problems on using the MDR. The result shows that preparation of the MDR can cost more than a week of time, with no clear pattern of standard format and require manpower more than 3 peoples. In summary, the development of the MDR prototype by comparative data between, the manufacturer, the Ministry of Industry of Thailand and the American Society of Mechanical Engineers (ASME). The specialists who have the experience in the MDR to determine the completeness and validate all content in the MDR 15 chapters.

An Update on Standards Activity for Txrf and the Challenges Ahead

1995 ◽  
Vol 39 ◽  
pp. 767-770
Author(s):  
R. S. Hockett
Keyword(s):  
Surface Analysis ◽  
Technical Committee ◽  
International Standards ◽  
International Scale ◽  
The Status ◽  
American Society ◽  
International Standards Organization

Standards organizations active in surface analysis using TXRF and VPD/TXRF include: (a) American Society for Testing and Materials (ASTM), (b) Semiconductor Equipment and Materials International (SEMI), (c) Ultra Clean Society of Japan (UCS), and (d) International Standards Organization Technical Committee 201 (ISO TC/201). The standards activities are presently dynamic, and they are on an international scale, This paper provides an update on the status of these activities, and presents the challenges ahead yet to be resolved.

scholarly journals Improvised Long Test Lengths via Stitching Scale Bar Method:

2020 ◽  
Vol 125 ◽  
Author(s):  
Vincent D. Lee ◽  
Daniel Sawyer ◽  
Muralikrishnan Bala
Keyword(s):  
International Standards ◽  
Minimum Length ◽  
Laser Tracker ◽  
Test Length ◽  
American Society ◽  
International Standards Organization ◽  
Interim Testing

Performance verifications of laser tracker systems (LTSs) often rely on calibrated length artifacts that are 2.3 m in length or more, as specified in International Standards Organization (ISO) and American Society of Mechanical Engineers (ASME) standards. The 2.3 m length is chosen as the minimum length that will sufficiently expose inaccuracy in LTSs. Embodiment of these artifacts often comes in the form of scale bars, fixed monuments, or a laser rail. In National Institute of Standards and Technology (NIST) Internal Report (IR) 8016, which was published in 2014 and discusses interim testing of LTSs, it was shown that a scale bar with three nests spaced 1.15 m apart was sufficient for exposing errors in LTSs. In that case, the LTS was placed symmetrically with respect to the scale bar so that both a 2.3 m symmetrical length and a 1.15 m asymmetrical length were presented to the LTS. This paper will evaluate whether a scale bar that is only 1.15 m in length can sufficiently expose errors within the LTS when it is stitched together to create a 2.3 m long test length.

scholarly journals Long-Term Testing of Advanced Ceramics: Concerns, Insights, and Recommendations

1995 ◽  
Author(s):  
Michael G. Jenkins
Keyword(s):  
Heat Engine ◽  
Ambient Air ◽  
Tensile Tests ◽  
Advanced Ceramics ◽  
Material Development ◽  
Collection Data ◽  
Digital Collection ◽  
Service Conditions ◽  
Accurate Temperature Measurement

Advanced ceramics have reached a level of material development to warrant serious consideration for use in advanced heat engine designs. Typically, design requirements based on service conditions may include 25,000 h lifetimes under stresses and temperatures of up to 250 MPa and 1370°C, respectively, with probabilities of failure of <0.1%. To assure that materials meet these stringent requirements requires long-term testing under the service conditions. Tensile tests at 1370°C in ambient air have been conducted on silicon nitride alloys to 5,000 h with reports of 10,000 h tests for silicon carbide. To provide useful data, such long term tests must incorporate such meticulous attention to detail as: strict temperature control (±5°C); accurate temperature measurement (1% of the nominal temperature); close control of grip cooling (±0.1°C) and ambient environment (±0.25°C); stable, high resolution extensometry (±0.5 µm); reliable heating (MTBF>10,000 h) and load control (gravity-controlled, dead load), and responsive data acquisition systems (12-bit, digital collection). Data thus obtained can be used as input into design codes such as NASA CARES/LIFE to predict and confirm reliability/durability.

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