Investigation of The Sound Absorption Behavior of Combed And Uncombed Fiber Reinforced / Polyester Composites

Yıl 2022, Cilt: 12 Sayı: 2, 530 - 544, 15.12.2022

Kenan Büyükkaya

https://doi.org/10.31466/kfbd.1003508

Öz

In this study, it was aimed to investigate the sound absorption properties of raw (uncombed) and combed fiber reinforced composites obtained from nettle plant growing naturally at 2100 altitude. In order to determine the sound absorption properties of different parts of the plant (bottom, middle, top), combed and uncombed fibers were classified as bottom, middle and top. Polymer composite test specimens were produced by reinforcing nettle fiber and raw fiber in different volume ratios (2.5, 5, 7.5, 10 %) to the polyester matrix. The sound absorption coefficients (normal incidence coefficient) of the composites were measured by the double microphone technique. The physical properties of the fibers (density, crystalline index, fiber diameter) were determined and the effects of these properties on sound absorption were discussed. Cross-sectional examinations of the fibers were revealed using scanning electron microscope images.
According to the data obtained from the nettle-reinforced composites, it was determined that the combed and fiber-reinforced materials obtained from the bottom and middle parts of the plant showed superior performance in terms of sound absorption. It was concluded that this difference was due to the physical properties of the fibers.

Anahtar Kelimeler

Nettle fiber, composite, sound absorption, dual microphone, physical properties

Taranmış ve Taranmamış Isırgan Lifi Takviyeli /Polyester Kompozitlerin Ses Absorbsiyon Davranışlarının İncelenmesi

Öz

Bu çalışmada, 2100 rakımda doğal olarak yetişen ısırgan bitkisinden elde edilmiş, ham(taranmamış) ve taranmış lif ile takviye edilmiş kompozitlerin ses absorbsiyon özelliklerinin incelenmesi amaçlanmıştır. Bitkinin farklı kısımlarının (dip,orta,tepe) ses emme özelliklerini belirlemek amacıyla taranmış ve taranmamış lifler, dip, orta ve tepe olmak üzere sınıflandırılmıştır. Polyester matrise farklı hacım oranlarında (2.5, 5, 7.5, 10 %) ısırgan elyafı ve ham elyaf takviye edilerek, polimer kompozit test numuneleri üretilmiştir. Kompozitlerin ses emme katsayıları (normal incidence absorption coefficient), çift mikrofon tekniği ile ölçülmüştür. Liflerin fiziksel özellikleri (yoğunluk, kristalin indeksi, lif çapı) belirlenmiş ve bu özelliklerin ses absorbsiyonuna etkileri tartışılmıştır. Liflerin kesit incelemeleri taramalı elektron mikroskobu görüntüleri kullanılarak ortaya konulmuştur.
Isırgan takviyeli kompozitlerden elde edilen verilere göre, taranmış ve bitkinin dip ve orta kısımlarından elde edilen lif ile takviye edilen malzemelerin, ses emme açısından daha üstün performans sergilediği belirlenmiştir. Bu farklılığın liflerin fiziksel özelliklerinden kaynaklandığı sonucuna varılmıştır. 

Anahtar Kelimeler

Isırgan lifi, kompozit, ses emme, çift mikrofon, fiziksel özellikler., Nettle fiber, composite, sound absorption, dual microphone, physical properties

Kaynakça

• Amiri, A., Triplett, Z., Moreira, A., Brezinka, N., Alcock, M., Ulven, C.A., (2017).Standard density measurement method development for flax fiber, Industrial Crops and Products, 96, 196-202 Applications, Building and Environment 94, 840e852
• ASTM. (1998) Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System.
• Berardi, U., Iannace, G., (2015). Acoustic characterization of natural fibers for sound absorption, Building and Environment,94(2), 840-852
• Ersoy, S., Küçük, H., (2009). Investigation of industrial tea-leaf-fibre waste material for its sound absorption properties, Applied Acoustics 70, 215–220
• Hassan, T., Jamshaid, H., Mishra, R., Khan, M.Q., Petru, M., Novak, J., Choteborsky. R., Hromasova, M., (2020). Acoustic, Mechanical and Thermal Properties of Green Composites Reinforced with Natural Fibers Waste, Polymers, 12(3), 654. doi: 10.3390/polym12030654
• Kim, H., Hong, J., Pyo, S., Acoustic characteristics of sound absorbable high performance concrete, Applied Acoustics Volume 138, September 2018, Pages 171-178
• Koizumi, T., Tsujiuchi, N., Adachi A., The development of sound absorbing materials using natural bamboo fibers, Paper from: High Performance Structures and Composites , Brebbia C.A., Wilde W.P., (Editors). 2002 WIT Press, Ashurst Lodge, Southampton, SO40 7AA, UK ISBN 1-85312-904-6
• Lanzilao, G., (2015). Properties and Applications of Himalayan Nettle Fibre, (Doctoral dissertation). The University of Leeds,School of Design – Centre for Technical Textiles Retrieved from http://www. https://etheses.whiterose.ac.uk/11104/1
• Lee, H.P., Pun Ng, M.B., Rammohan, A.V., Tran, L.Q.N., (2017). An Investigation of the Sound Absorption Properties of Flax/Epoxy Composites Compared with Glass/Epoxy Composites, Journal Of Natural Fıbers, 14(1), 71–77, http://dx.doi.org/10.1080/15440478.2016.1146643
• Lima, Z.Y., Putraa, A., Nora, M.J.M., Yaakobb, M.Y., (2018). Sound absorption performance of natural kenaf fibres, Applied Acoustics 130 107–114. http://dx.doi.org/10.1016/j.apacoust.2017.09.012
• Little, J.E., Yuan, X.W., Jones, M.I., (2011). Voıds Characterısatıon In Carbon Fıbre/Epoxy Composıte Lamınates, 18th Internatıonal Conference On Composıte Materıals, August 21-26, Icc Jeju Korea
• Mehdikhani, M., Gorbatikh, L., Verpoest, I., Lomov, S.V., (2019). Voids in fiber-reinforced polymer composites: A review on their formation, characteristics, and effects on mechanical performance, Journal of Composite Materials, 53(12), 1579–1669
• Qui, H., Enhui, Y., (2018). Effect Of Thıckness, Densıty And Cavıty Depth On The Sound Absorptıon Propertıes Of Wool Boards, Autex Research Journal, 18, 2, 203-208.
• Rohen, L.A., Neves, A.C.C., Mantovani, D.P., Maurício, F.V.C., Vieira, J.S., Pontes, L.A., Margem, F.M., Monteiro, S., (2017) Hemp Fiber Density Using the Pycnometry Technique, Springer International Publishing, Published in: Characterization of Minerals, Metals, and Materials,
• Rong, M.Z., Zhang,M.Q., Lui, Y., Yang, G., Zeng, H.M., (2001). The effect of fibre treatment on the mechanical properties of unidirectional sisal reinforced epoxy composites, Composites Science and Technology, 61, 1437–1447
• Segal, L., Creely, J.J., Martin,A.E., Conrad C.M., (1959). An Empirical Method for Estimating the Degree of Crystallinity of Native Cellulose Using the X-Ray Diffractometer, Textile Research Journal, 29, (10), 786-794
• URL-1: http/www. Poliya.com, (Erişim Tarihi: 25 Mayıs 2021).
• Washington, L.E. Magalhaes, Darci A. Gatto, (2014). Properties of polypropylene composites filled with a mixture of household waste of mate-tea and wood particles, Construction and Building Materials 61, 60–68
• Xu, C., Gu, Y., Yang, Z., Min Li, M., Yanxia Li Y. Zhang Z., (2016). Mechanical properties of surface-treated ramie fiber fabric/epoxy resin composite fabricated by vacuum-assisted resin infusion molding with hot compaction, Journal of Composite Materials, 50(9) 1189–1198
• Yahya, M.N., Sambu, M., Latif, H.A., Junaid, T.M., (2017). A study of Acoustics Performance on Natural Fibre Composite, IOP Conf. Series: Materials Science and Engineering 226, 012013 doi:10.1088/1757-899X/226/1/012013
• Yang, W., and Y. Li. 2012. Sound absorption performance of natural fibers and their composites. Science China Technological Sciences 55(8):2278–2283.doi:10.1007/s11431-012-4943-1.
• Zhang, J., Shen, Y., Jiang, B., Li, Y., (2018). Sound Absorption Characterization of Natural Materials and Sandwich Structure Composites, Aerospace , 5, 75; doi:10.3390/aerospace5030075