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Random Incidence Absorption and Transmission Loss Testing and Modeling of Microperforated Composites
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 17, 2011 by SAE International in United States
Annotation ability available
Flat, constant thickness composites that consisted of a microperforated top layer plus a fibrous decoupler layer were tested for random absorption and transmission loss (TL) performance. The top, microperforated layer consisted of a relatively thick film that contained small, precise micro-perforations. For reference, top layers that consisted of a resistive scrim and an impervious film were also included in this study. Two fibrous materials of constant thickness were used for the decoupler layer between a steel panel and the top microperforated film. The composites' absorption and TL performance were also modeled using the well-known transfer matrix method. This method has been implemented in a commercially available statistical energy analysis (SEA) software package. A comparison of testing and modeling results showed reasonable agreement for absorption results and even better agreement for transmission loss and insertion loss results.
CitationAlexander, J., Reed, D., and Gerdes, R., "Random Incidence Absorption and Transmission Loss Testing and Modeling of Microperforated Composites," SAE Technical Paper 2011-01-1626, 2011, https://doi.org/10.4271/2011-01-1626.
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