Evaluation on the acoustic properties of multi-component polyester nonwovens
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F18%3A00005929" target="_blank" >RIV/46747885:24210/18:00005929 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24410/18:00005929
Result on the web
<a href="http://strutex.ft.tul.cz/2018/Phd/BookOfExtendedAbstracts_STRUTEX_2018_International_PhD_student_day.pdf" target="_blank" >http://strutex.ft.tul.cz/2018/Phd/BookOfExtendedAbstracts_STRUTEX_2018_International_PhD_student_day.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Evaluation on the acoustic properties of multi-component polyester nonwovens
Original language description
This study presents an investigation on the acoustical properties of multi-component polyester nonwovens by using experimental and numerical methods. 15 types of nonwoven samples made by 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 applied to conduct the prediction of airflow resistivity. 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 has been performed to get the most acceptable model. The power-fitted empirical model exhibits very small error of 6.8%. It is shown that Delany-Bazley and Miki models can accurately predict surface impedance of multi-component polyester nonwovens, but Komatsu model has inaccuracy in prediction especially at low-frequency band. The results indicate that Miki model is the most acceptable method to predict the sound absorption coefficient with mean error 8.39% from all the samples.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
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)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů