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In 1945 a report entitled Standards on Piezoelectric Crystals: Recommended Terminologyn was prepared by the Committee on Piezoelectric Crystals and issued by the Institute. The present report involves not only much new material, but also a revision of certain portions of the earlier report. Part I of the 1945 report (corresponding to Part 1 of this Standard) remains unchanged, with the following exceptions: The use of left-handed axes for left crystals is now abandoned (see Sections 1,9, and 1.1… read more 1 to 1.14); and the 1945 rules for rotated plates are now supplanted by the rules in the present report. read less

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This Test Procedure, which supersedes the previous issue, Standards on Antennas--Methods of Testing 48 I R E 2S2, is concerned with measurements of the properties which characterize antennas. In Section 1.2, symbols and units to be used in this test Procedure are defined. The effect of the environment on the antenna and its characteristics is discussed in Section 1.3, and certain precautions to be taken during the measurements are suggested. In Section 1.4, the usefulness of the reciprocity theorem in antenna measurements is cited, along with examples of situations in which this theorem does not apply.

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The primary objective of this report is to provide a guidance document to be used by practitioners to better understand the standards and publications issued by ASME relevant to hydrogen service.

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The intent of this proposed Guide is to assist the Working Groups within the Transformers Committee, thus specific examples will be taken from transformer-related standards. We have recognized that identification of general principles and procedures could have broader application.

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