Ses Yalıtımı Açısından Doğal Liflerin Akustik Özellikleri

Öz

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.

Anahtar Kelimeler

• Doğal lifler,gürültü kontrolü,ses yalıtım

Acoustic Properties of Natural Fibers for Sound Insulation

Öz

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.

Anahtar Kelimeler

• Natural fibers,noise control,sound insulation

Kaynakça

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