Doğal Yaşlandırma Koşullarının Dokunmuş Aramid Kompozitlerin Sönümleme Davranışına Olan Etkisi

Bu çalışmada dokunmuş aramid elyaf takviyeli kompozit kirişlerin çevresel yaşlandırma faktörlerine bağlı olarak sönüm oranlarındaki değişimler araştırılmıştır. Dokunmuş aramid elyaf takviyeli kompozitler, Vakum Destekli Reçine İnfüzyon Tekniği (VDRİT) kullanılarak üretilmiştir. Bir yıl boyunca çevresel yaşlandırmaya maruz bırakılan kompozitlerin dinamik analizleri her üç ayda bir gerçekleştirilmiştir. Dinamik analiz sonucu elde edilen veriler Matlab’te fft komutu esaslı bir program ile işlenmiştir. Dokunmuş aramid elyaf takviyeli kompozit kirişlere ait Elastisite Modülü ASTM D3039 standardı kullanılarak elde edilmiştir. Titreşim test sonuçları, yaşlandırılmamış referans numuneler için ANSYS programında doğrulanmıştır. Bir yıl süreli çevresel yaşlandırma koşullarının dokunmuş aramid elyaf takviyeli kompozit kirişlerin sönümleme oranına olan etkisi belirlenmiştir.

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