کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
754614 895871 2010 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the use of porous inclusions to improve the acoustical response of porous materials: Analytical model and experimental verification
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
On the use of porous inclusions to improve the acoustical response of porous materials: Analytical model and experimental verification
چکیده انگلیسی

Acoustical composite materials obtained through a set of porous inclusions are studied. A theoretical model based on the homogenization hypotheses introduced by Boutin et al. [1] is presented; the inclusions are supposed periodic and the frame rigid. The idea behind the inclusion of a second acoustical porous material into the original single porosity material, is to obtain the pressure diffusion effect already observed in the double porosity case. At the same time, the main disadvantages of double porosity are faced, especially the absorption behavior at very low frequency and the loss of performances in transmission. Experimental data are obtained in Kundt Tubes of different dimensions in terms of absorption curves and compared to analytical results for representative configurations, thus validating the theoretical model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 71, Issue 4, April 2010, Pages 283–298
نویسندگان
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