کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
755273 895937 2010 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sound absorbing characteristics of fibrous metal materials at high temperatures
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Sound absorbing characteristics of fibrous metal materials at high temperatures
چکیده انگلیسی

To study the effect of high temperatures on absorbing properties of fibrous metal materials, the calculations of effective density and effective bulk modulus are presented on basis of Dup‘ere’s model and Tarnow’s model. A modifying factor is presented to modify differences between real effective density and the effective density when the fibers regarded straight. The high temperatures effects on acoustic parameters are studied by thermodynamics theories and variable-property heat transfer. The surface specific acoustic impedances and normal incidence acoustic absorption coefficients are discussed theoretically. Finally, a measurement setup is built to verify the theoretical predictions. The experimental results fit the theoretical results well.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 71, Issue 3, March 2010, Pages 221–235
نویسندگان
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