Study on the sound absorption behavior of multi-component polyester nonwovens: experimental and numerical methods

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F19%3A00005924" target="_blank" >RIV/46747885:24410/19:00005924 - isvavai.cz</a>

Result on the web

<a href="https://journals.sagepub.com/doi/full/10.1177/0040517518811940" target="_blank" >https://journals.sagepub.com/doi/full/10.1177/0040517518811940</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/0040517518811940" target="_blank" >10.1177/0040517518811940</a>

Result language

angličtina

Original language name

Study on the sound absorption behavior of multi-component polyester nonwovens: experimental and numerical methods

Original language description

This study presents an investigation of the acoustical properties of multi-component polyester nonwovens with experimental and numerical methods. 15 types of nonwoven samples made with staple, hollow and bi-component polyester fibers were chosen to carry out this study. The AFD300 AcoustiFlow device was employed to measure airflow resistivity. Several models were grouped in theoretical and empirical model categories and used to predict the airflow resistivity. A simple empirical model based on fiber diameter and fabric bulk density was obtained through power-fitting method. The difference between measured and predicted airflow resistivity was analyzed. The surface impedance and sound absorption coefficient were determined by using 45mm Materiacustica impedance tube. Some widely used impedance models were used to predict acoustical properties. Comparison between measured and predicted values was carried out to determine the most accurate model for multi-component polyester nonwovens. The results show that one of the Tarnow model provides the closest prediction to the measured value with an error of 12%. The proposed power-fitted empirical model exhibits very small error of 6.8%. It is shown that the Delany-Bazley and Miki models can accurately predict surface impedance of multi-component polyester nonwovens, but Komatsu model is less especially at the low-frequency range. The results indicate that the Miki model is the most accurate method to predict the sound absorption coefficient with mean error of 8.39%.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Textile Research Journal

ISSN

0040-5175

e-ISSN

—

Volume of the periodical

89

Issue of the periodical within the volume

16

Country of publishing house

GB - UNITED KINGDOM

Number of pages

20

Pages from-to

3342-3361

UT code for WoS article

000477719300012

EID of the result in the Scopus database

2-s2.0-85061062838