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Effects of structure design on resilience and acoustic absorption properties of porous flexible-foam based perforated composites

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Abstract

In this paper, perforated composite panel was combined with porous and resonance structures to investigate the influence on acoustic absorption and resilient properties. The perforated composite panel was fabricated based on highdensity flexible-foam via perforating and reinforcing with laminated hybrid nonwoven fabric. Effect of aperture size (AS) (ranging from 3 mm to 6 mm), perforation ratio (PR) (5 %, 10 %, 15 % and 20 %) and perforation depth (PD) (25 %, 50 %, 75 % and 100 %) on the compressive hardness, rebound resilience and acoustic absorption properties was explored. Multiply hybrid nonwoven fabric which was fabricated with low-melting point polyester (LMPET), flame-retardant polyester (FRPET) and recycled Kevlar fibers was utilized to reinforce the flexible composites and improve the acoustic property. Nonwoven that was fabricated with entangled LMPET fibers had porous structures which could reinforce the flexible foam and enhance the acoustic absorption properties. The result revealed that the continuity and supporting of porous flexible foam had directly influence the compressive hardness. The maximum hardness of the flexible-foam based perforated composites reached 420 N. The rebound resilience result showed that the sample had high resilient structure and the resilience was up to 48 %. The perforated flexible composites plate (PFP) with 4 mm-AS performed the highest acoustic absorption coefficient at 0.9. The acoustic absorption coefficient was higher than 0.8 in the frequency range from 800 to 1600 Hz and 1600 to 2400 Hz when perforated composites had 4 mm-AS at 5 % and 10 % perforation ratio. With the increase in perforation ratio, absorption peak moved from 3200 Hz to 4000 Hz. Hybrid nonwoven laminated layer help to broaden the frequency range of acoustic absorption of perforated high-density flexible foam based composites panel. Acoustic absorption coefficient was higher than 0.4 when frequency ranging from 900 Hz to 4000 Hz.

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Authors and Affiliations

  1. Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung, 40601, Taiwan

    Ching-Wen Lou

  2. Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City, 40724, Taiwan

    Shih-Yu Huang & Jia-Horng Lin

  3. Department of Aerospace and Systems Engineering, Feng Chia University, Taichung, 40724, Taiwan

    Chen-Hung Huang

  4. Department of Materials and Textiles, Oriental Institute of Technology, New Taipei City, 22061, Taiwan

    Yi-Jun Pan

  5. College of Textiles and Garment, Hebei University of Science and Technology, Shijiazhuang, 050018, China

    Ruosi Yan

  6. Department of Fashion Design and Merchandising, Shih Chien University Kaohsiung Campus, Kaohsiung, 845, Taiwan

    Chien-Teng Hsieh

  7. School of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan

    Jia-Horng Lin

  8. Department of Fashion Design, Asia University, Taichung, 41354, Taiwan

    Jia-Horng Lin

Authors
  1. Ching-Wen Lou
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  2. Shih-Yu Huang
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  3. Chen-Hung Huang
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  4. Yi-Jun Pan
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  5. Ruosi Yan
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  6. Chien-Teng Hsieh
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  7. Jia-Horng Lin
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Correspondence to Jia-Horng Lin.

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Lou, CW., Huang, SY., Huang, CH. et al. Effects of structure design on resilience and acoustic absorption properties of porous flexible-foam based perforated composites. Fibers Polym 16, 2652–2662 (2015). https://doi.org/10.1007/s12221-015-5164-6

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  • DOI: https://doi.org/10.1007/s12221-015-5164-6

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