کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7152443 | 1462398 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation studies involving sound absorbing parameters of roadside screen panels subjected to aging in simulated conditions
ترجمه فارسی عنوان
مطالعات تحقیقاتی شامل پارامترهای جذب صدا از پانل های صفحه نمایش جاده ای که در شرایط شبیه سازی شده در معرض پیری قرار دارند
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کلمات کلیدی
صفحه نمایش آکوستیک، روند پیری، جذب صدا، طول عمر
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
The paper presents the results of investigation studies involving the impact of atmospheric factors on sound-absorbing parameters of roadside acoustic screen panels. The research studies comprised the aging test consisting of 1000Â cycles in simulated conditions, sound absorption measurements and surface morphology tests, using the SEM scanning method. The simulation of aging consisted of 100 or 150Â cycles at a time. Then, the panels were investigated in the reverberation chamber to define their sound-absorbing properties. The process was repeated until 1000Â cycles were completed. Basing on the carried out tests, a statistical linear model was worked out which was used to estimate the value of a single number sound absorption coefficient after successive aging cycles. The optimality of the model was demonstrated by means of a statistical test confirming normal distribution of random residuals. For the research studies, we employed an innovative structural design of panels for which aging characteristics were obtained. Basing on the obtained results and on the statistical analysis, the prospects to maintain acoustic properties of the panels during their service life was estimated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 111, October 2016, Pages 8-15
Journal: Applied Acoustics - Volume 111, October 2016, Pages 8-15
نویسندگان
Artur NowoÅwiat, Jerzy Bochen, Leszek Dulak, RafaÅ Å»uchowski,