Ses Yalıtımı Açısından Doğal Liflerin Akustik Özellikleri

Year 2017, Volume: 8 Issue: Özel (Special) 1, 25 - 37, 02.07.2017

Ali İhsan Kaya , Tuncer Dalgar

Abstract

Teknolojik gelişmeler beraberinde
gürültü sorununu da getirmiştir. Gürültü kontrolü yaşam ortamının kalitesini
arttırmada en önemli gerekliliklerden biri olmuştur. Gürültüyü önlemede petrol
kökenli malzemeler yaygın bir şekilde kullanılmaktadır. Petrol ve mineral
kökenli malzemelerin çevreye ve insan sağlığına verdiği zararlar göz önüne
alındığında, bu kimyasal malzemelere alternatif olarak yeni malzemeler bulma ve
geliştirme zorunluluk halini almıştır. Doğal lifler ses yalıtımı açısından
değerlendirildiğinde yenilenebilir, ucuz, yerli, bol, çevre dostu olması
nedeniyle büyük bir avantaj sağlamaktadır. Makalede Odun, kenaf, kenevir,
kabak, Hindistan cevizi, çay yaprağı, hurma ağacı, koyunyünü liflerinin akustik
özellikleri özetlenmiştir. Özellikle incelemelerde 125Hz, 250Hz, 500Hz, 1000Hz,
2000Hz, 4000Hz frekanslardaki akustik davranış üzerinde yoğunlaşılmıştır.
Sonuçların belirtilen frekanslarda kabul edilebilir sınırlar içerisinde olduğu
ve doğal liflerin fiziksel özellikleri arttıkça akustik özelliğinin belirli
sınırlar içerisinde arttığı tespit edilmiştir.

Keywords

Doğal lifler, gürültü kontrolü, ses yalıtım

Acoustic Properties of Natural Fibers for Sound Insulation

Abstract

Technological developments have
also brought noise problem. Noise control has become one of the most important
requirements to improve the quality of life. Petroleum-derived materials are
widely used to prevent noise. Considering the adverse effects of
petroleum-based materials on nature, finding and developing new materials as alternatives
to these chemical materials become a necessity in practice. Natural fibers provide a great advantage because they are
renewable, inexpensive, domestic, abundant and environmentally friendly when
evaluated in terms of sound insulation. İn this study,acoustic properties of
wood fiber, kenaf, hemp, coconut, palm fiber, tea-leaf fibre, luffa fiber,
sheep wool are summarized. Especially, this paper focus on acoustic behavior at
125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz frequencies. The results are within
acceptable limits at the indicated frequencies. İt has been found that both the
physical properties of natural fibers increased and the acoustic properties
increased within certain limits.

Keywords

Natural fibers, noise control, sound insulation

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