Document Detail

A time-space decomposition method for calculating the nearfield pressure generated by a pulsed circular piston.
MedLine Citation:
PMID:  16846147     Owner:  NLM     Status:  MEDLINE    
A time-space decomposition approach is derived for numerical calculations of the transient nearfield pressure generated by a circular piston. Time-space decomposition analytically separates the temporal and spatial components of a rapidly converging single integral expression, thereby converting transient nearfield pressure calculations into the superposition of a small number of fast-converging spatial integrals that are weighted by time-dependent factors. Results indicate that, for the same peak error value, time-space decomposition is at least one or two orders of magnitude faster than the Rayleigh-Sommerfeld integral, the Schoch integral, the Field II program, and the DREAM program. Time-space decomposition is also faster than methods that directly calculate the impulse response by at least a factor of 3 for a 10% peak error and by a factor of 17 for a 1% peak error. The results show that, for a specified maximum error value, time-space decomposition is significantly faster than the impulse response and other analytical integrals evaluated for computations of transient nearfield pressures generated by circular pistons.
James F Kelly; Robert J McGough
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  IEEE transactions on ultrasonics, ferroelectrics, and frequency control     Volume:  53     ISSN:  0885-3010     ISO Abbreviation:  IEEE Trans Ultrason Ferroelectr Freq Control     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-07-18     Completed Date:  2006-08-08     Revised Date:  2013-06-11    
Medline Journal Info:
Nlm Unique ID:  9882735     Medline TA:  IEEE Trans Ultrason Ferroelectr Freq Control     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1150-9     Citation Subset:  IM    
Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, USA.
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MeSH Terms
Computer Simulation
Computer-Aided Design*
Equipment Design
Equipment Failure Analysis
Image Interpretation, Computer-Assisted / instrumentation*,  methods*
Models, Theoretical*
Reproducibility of Results
Sensitivity and Specificity
Time Factors
Ultrasonography / instrumentation*,  methods
Grant Support
5R01CA093669/CA/NCI NIH HHS; R01 CA093669/CA/NCI NIH HHS; R01 CA093669-03/CA/NCI NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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