TY - JOUR T1 - Determining Sound Absorbing and Transmission Loss Properties of Rubbers Used in Automotive Industries AU - Ipek, Osman AU - Koru, Murat AU - Serce, Orhan AU - Karabulut, Huseyin AU - Hıdıroglu, Mehtap PY - 2018 DA - December JF - The Eurasia Proceedings of Science Technology Engineering and Mathematics JO - EPSTEM PB - ISRES Publishing WT - DergiPark SN - 2602-3199 SP - 137 EP - 148 IS - 4 LA - en AB - Soundis simply a kind energy which sprawls to environment as waves. Sound changespressure at air, water etc. which this detected by ears as sound. At the otherhand noise is a kind of sound which is unpleasant, and undesirable for humans.In automotive industry, noise effects drivers and passengers comfort directly.Because of that, automotive manufacturers consider noise insulation inautomobiles as an important factor for quality. Ethylene Propylene DieneMonomer Rubber (EPDM), Natural Rubber (NR) and Nitrile Rubber (NBR) are one ofthe most used insulation materials in automotive industry. In this study, EPDM,NR and NBR materials sound absorption coefficient and sound transmission lossare measured with impedance tube for investigate these materials as insulationpart placed between passenger cabin and engine side on shifter mechanisms.Measurements repeated three times and results showed at graphics. Results arewhich obtained from tests are presented systematically in this study. In conclusion,studyresults showed that EPDM is slightly better than NR and NBR as material ofnoise insulation part at shifter mechanisms. KW - Sound absorption coefficient KW - Sound transmission loss KW - Sound insulation properties of rubbers CR - A. İ. Kaya, T. Dalgarno (2017). Ses Yalıtımı Açısından Doğal Liflerin Akustik Özellikleri. 4. Ulusal Meslek Yüksekokulları Sosyal ve Teknik Bilimler Kongresi, 813-827. A. Hedayati, A. Arefazar (2009). Effects of Filler Characteristics on the Acoustic Absorption of EPDM-based Highly Filled Particulate Composite. Journal of Reinforced Plastics and Composites, 28 (18), 2241-2249. A. Seçgin, Y. İhtiyaroğlu, M. Kara, A. Ozankan (2017). Akustik Yalıtım Malzemelerinin Ses Yutma Katsayılarının Farklı Sıcaklık Koşulları Altındaki Değişiminin Deneysel Olarak İncelenmesi. 18. Ulusal Makina Teorisi Sempozyumu, 317- 324. ASTM-E 1050 (2016). International Standard: Standard Test Method for Impedance and Absorption of Acoustical Materials Using A Tube, Two Microphones and A Digital Frequency Analysis System, 1-11. ASTM-E 2611 (2006). Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustical Materials Based on the Transfer Matrix Method, 1-14. F. Asdrubali, F. D’Alessandro, S. Schiavoni (2008). Sound Absorbing Properties of Materials Made of Rubber Crumbs. Acoustic’08 Paris, 35-40. H. Harjana, U. Sabino, I. Yahya, R. Kristiani (2014). Sound insulation and absorption properties of re-claimed waste tire rubber. ICAMST2014, 1-5. İ. Batman, İ. Aydın (2012). Taşıtlarda Kullanılan Yalıtım Malzemelerinin Ses Yutma Katsayılarının Belirlenmesi. Journal of the Faculty of Engineering and Architecture of Gazi University, 27 (4), 687-693. J. Sikora, J. Turkiewicz (2010). Sound absorption coefficients of granular materials. Mechanics and Control, 29 (3), 149-157. M. K. El- mansy, Abd-elfattah, A. Mahmoud, M. Abd-elbaseer, R. S. Youssif (2011). Standart uncertainity of material size effect on sound absorption coefficient in reverberation room. Journal of Applied Sciences Research, 7 (2), 166-173. O. Akaydın, A. Akgül, E. Orhon, H. T. Belek (2013). Gürültü Kontrol Elemanlarının Akustik Özelliklerinin Empedans Tüpü ile Belirlenmesi. 10. Ulusal Akustik Kongresi, 1-10. S. Ersoy, A. El-Hafid (2013). Investigation of Sound Properties of High Density Polyethylene/Styrene Butadiene Rubber Polymer Composites. Vibroengineering Procedia, 1, 77-80. Ş. Kılınçarslan, M. Davraz, M. Akça (2018). Pomza Agregalı Köpük Betonların Özelliklerinin Araştırılması. Journal of Engineering Sciences and Design, 6(1), 148-153. TS EN ISO 10534-1 (2004). Akustik-Empedans borularında ses absorplama katsayısı ve empedansın tayini – Bölüm 1: Duran dalga oranını kullanma metodu, 1-24. TS EN ISO 10534-2 (2003). Akustik-Empedans borularındaki ses absorpsiyon katsayısının ve empedansın tayini – Bölüm 2: Aktarım fonksiyonu metodu, 1-25. X. Xu, H. Wang, Y. Sun, J. Han, R. Huang (2018). Sound Absorbing Properties of Perforated Composite Panels of Recycled Rubber, Fiberboard Sawdust, and High-Density Polyethylene. Journal of Cleaner Production, 187, 215-221. UR - https://dergipark.org.tr/en/pub/epstem/issue//496378 L1 - https://dergipark.org.tr/en/download/article-file/595455 ER -