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Astm E562 Pdf Free 15 __EXCLUSIVE__

ASTM E562 is being presented to ASTM Sections F, C, and H. Also, a summary of the ASTM E562 guidelines as it relates to current standard ASTM F1352 and F1361 is presented. ASTM E562 provides consistent and repeatable guidance for the characterization of solid non-metallic RF materials used in communications RF devices. This standard is significant in providing a well-established framework for the characterization and selection of solid non-metallic materials that are used in communications RF devices. ASTM E562 provides a mechanism for characterizing materials for use in transmitting radio frequency signals, whether those materials are used as part of a single component or in a multitude of components. The new standard can be used for a wide variety of materials, including non-metals that have two or more dielectric (insulating) properties. The new standard can be used to characterize materials for use as feedthroughs, waveguides, cavity and waveguide liners, filters, interconnects, termination/vacuum windows, choke coils, resonators, waveguide lenses, substrates, coatings, and other RF materials. Also, this standard can be used to provide recommendations on the use of solid materials for the production of radio frequency devices.

astm e562 pdf free 15


This paper extends the preliminary analysis on the thermal and flammability aspects of the NASA/ASTM F2198 Fire Investigation and Prevention Handbook (FIPS) in the context of the National Academy of Sciences' (NAS) Thermal-Flammable Materials (TFM) project. The goal of the project is to apply thermal-flammability effects-based models to predict fire behavior and protect critical systems in critical infrastructure. The purpose is to determine whether the FIPS in its current form has the sufficient quality to serve as a standards text and control guide, and in particular, whether a new standard should be proposed. Examples are provided showing that some requirements for FIPS cannot be met at all, such as the requirement that the temperature and pressure of the surrounding environment are always reported. Regarding thermal aspects, FIPS presents many issues. For instance, the requirement for a specific heat capacity is not met for most fuel sources. Then FIPS recommends the use of the kJ/g as a representative value. Regarding flammability aspects, the recommendations of FIPS are not recommended because they lead to inaccurate values for lower limiting oxygen index (LOI). Based on a preliminary analysis of the FIPS, the flammability aspects of the project cannot be adequately addressed unless revisions to the handbook are made. Copyright 2013 Elsevier B.V. All rights reserved.


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