Parameters Affecting the Sound Absorption Performance of Luffa Cylindrica Fibers-Epoxy Composite

Abstract

There are appropriate sound level ranges determined by regulations for the intended use of each place. In the room acoustics, finishing material’s sound absorption coefficients are used to calculate the reverberation time. Materials such as glass wool, which are widely used in site, are harmful for human health, especially during application. For this reason, as in many fields, the search for natural materials in sound absorption materials has become more important especially in recent years. In this study, it is aimed to produce an alternative sound absorbing material that is not harmful to human health with composites that will be produced by using a natural plant fiber named Luffa Cylndrica. In this context, using the Luffa Cylindrica fibers with epoxy binder, composite material is produced and the sound absorption coefficients of the samples are determined by impedance tube method. Also, the effect of material thickness and fiber ratio parameters on sound absorption performance are examined. The results are presented in graphs and and compared to eachother. The results showed that the material thickness and fiber ratio had an effect on sound absorption performance.

Keywords

• Luffa Cylindrica,Natural fiber composite,Epoxy binder,Sound absorption coefficient,Noise reduction coefficient

Su Kabağı Lifi (Luffa Cylindrica)-Epoksi Kompozitinde Sesin Yutulma Performansını Etkileyen Parametreler

Abstract

Her mekanın kullanım amacına yönelik, yönetmeliklerle belirlenmiş uygun ses düzeyi aralıkları vardır. Mekan içerisinde, ses düzeyinin istenen seviyeye getirilmesi bitirme malzemelerinin ses yutma özellikleri kullanılarak sağlanmaktadır. Pratikte oldukça yaygın kullanılan cam yünü gibi malzemeler, özellikle uygulama sırasında insan sağlığı için zarar verici olmaktadır. Bu nedenle de pek çok alanda olduğu gibi, ses yutma malzemelerinde de doğal malzeme arayışı özellikle son yıllarda daha önemli hale gelmiştir. Bu çalışmada*, doğal bir bitki lifi olan Su Kabağı (LC) lifleri kullanılarak üretilecek kompozitler ile insan sağlığı için zararlı olmayan alternatif bir ses yutucu malzeme üretimi amaçlanmıştır. Bu kapsamda, su kabağı (LC) lifleri epoksi bağlayıcı ile kullanılarak kompozit malzeme üretilmiş ve empedans tüpü yöntemi ile numunelerin ses yutma katsayıları belirlenmiştir. Aynı zamanda, malzeme kalınlığı ve lif oranı parametrelerinin ses yutma performansı üzerindeki etkisi incelenmiştir. Elde edilen sonuçlar grafikler halinde sunulmuş ve karşılaştırmalar yapılmış ve sonuçlar, malzeme kalınlığı ve lif oranının ses yutma performansı üzerinde etkili olduğunu göstermiştir.

Keywords

• Su kabağı lifleri,Doğal lifli kompozit,Epoksi bağlayıcı,Ses yutma katsayısı,Ses azaltım katsayısı

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