Design of Nonwoven Carpets to Upgrade Sound Isolation Features in Automobiles

Open access


With the increases of the expected properties of textile products, better and advanced new designs are being created. Textiles used in vehicles are increasing, and the current performance of the expectations bar is determined by automobile manufacturers. While meeting the expectations of users in the vehicle mechanically, but also disturbing the user during operation of the mechanical properties of this ratio should be minimized. This study was intended to minimize sound transmission of nonwoven textile components, which are used in cars as silencer parts. For that purpose, four different models were developed in this study. First model consists of three designs for baggage carpets. Second model has six designs for floor coverings. Third model comprises two designs inner dash felt and finally fourth model includes two designs of hood liners. The acoustical absorption coefficients and transmission loss of these carpets were tested and evaluated in the frequency range of 16-6300 Hz. The measurements demonstrated that nonwoven layer is a very significant and effective part of a carpet due to its contribution in the sound isolation. With this study, it has been determined which layer has better performance on sound absorption and transmission loss among different carpet types. A combination of heavy layer and nonwoven layer carpets is found to be benefit for noise and sound insulation.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • Chapman R. (2010). Applications of Nonwovens in Technical Textiles. Woodhead Publishing Limited Cambridge England.

  • Curtu I Stanciu M.D. Timar. J Rosca I.C. Cerbu C. Luca Motoc D. Natural Frequency and Damping of Composite Materials with Application in the Sound Barriers Structures in Book- The Automobile and the Environment: International Congress of Automotive and Transport Engineering CONAT 2010 edited by Anghel Chiru Cambridge Scholars Publishing 2011 p. 507.

  • Edana-automotive-nonwovens-newsletter-issue-june-2013 date retrieved 23.11.2013

  • Grimberg R. Savin A. Steigmann R. Eftimie N. Stanciu M.D A method to determine the debonding zones in multilayers wood materials in Proceedings of the 8th International Conference Wood Science and Engineering in the Third Millennium” ICWSE2011 November 3-5 2011 pp.403

  • Hong. Zhou Guangsu. Huang Xirong. Chen et al (2004) Chemical Progress Vol.16 n.3 450-456 (In Chinese)

  • ISO 10534-1:1996 Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes - Part 1: Method using standing wave ratio.

  • Ming Ma Yuan Bai Xiaoming Qian (2011) Advanced Materials Research Vols. 332-334 pp. 1531-1534

  • SR EN ISO 10534-2 Determination of sound absorption coefficient and acoustic impedance with the interferometer Part 2: Transfer function method 2002.

  • Smith C.W. (2004). Nonwovens in Automotives- More than Just a Pretty Face. Industrial Textile Associates Fall 60-63

  • Yuheng. Lv (2001) Journal of Sound and Vibration Vol.21 n.6 14-17 (In Chinese)

Journal information
Impact Factor

IMPACT FACTOR 2018: 0.927
5-year IMPACT FACTOR: 1.016

CiteScore 2018: 1.21

SCImago Journal Rank (SJR) 2018: 0.395
Source Normalized Impact per Paper (SNIP) 2018: 1.044

Cited By
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 201 107 0
PDF Downloads 129 78 1