| A diffraction correction for the nonlinearity parameter measured by the harmonic generation technique. | |
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MedLine Citation:
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PMID: 20330300 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Practical applications of harmonic generation to determine the nonlinearity parameter Beta generally tend toward the lower drive (fundamental) frequencies. As a result, diffraction effects on Beta become more significant. Derivations of a number of different diffraction correction formulas, which are applied for a piston source and a receiver located some distance away, are in the literature. In the paper by Blackburn and Breazeale [J. Acoust. Soc. Am. 76, 1755-1760 (1984)] the correction formulas were applied to the amplitude of the fundamental frequency and the results on Beta were experimentally tested. By building on this earlier work, a diffraction correction formula that includes a factor from a numerical integration algorithm applied to the harmonically generated wave is provided. The formulation of this algorithm is discussed. Experimental results are given for measurements of Beta in AA 2024 to illustrate the agreement. |
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Authors:
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William T Yost |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1807 Citation Subset: IM |
Affiliation:
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NASA-Langley Res. Ctr., 3B E. Taylor St, Rm. 285, MS231, Hampton, VA 23681-2199, william.t.yost@nasa.gov. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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