Effect of Number of Surface Fiber Layers on Flexural Behavior in Three Dimensional Integrated Woven Spacer Reinforced Sandwich Composites

Yıl 2019, , 231 - 240, 31.12.2019

Rukiye Ertan , Abdil Kuş , İsmail Durgun

https://doi.org/10.17482/uumfd.540420

Cited By: 1

Öz

In this study, the effect of number of surface layers on the flexural behavior of carbon fiber
surfaced 3D integrated woven spacer sandwich composite structures was investigated. The resin
impregnated carbon fibers used as the bottom and top surface material were joined to the threedimensional intermediate fabric in 2, 3 and 4 layers using a vacuum infusion technique. Two different
polymer materials, epoxy and polyester, were used as resin material. The composite sandwiches plates
with different surface thicknesses and resin materials are cut into samples according to the standards. In
order to test the flexural behavior, three point bending tests were performed at room temperature and the
flexural force-displacement curves of the samples were established. The results showed that the sandwich
composites increased their resistance to flexural with increasing number of surface layers. It has been
found that epoxy matrix composites exhibit higher strength than polyesters and that the increase in
strength due to layer thickness is greater.

Anahtar Kelimeler

Composite sandwich, Carbon fiber, Layer, Flexural, Resin

ÜÇ BOYUTLU DOKUMA KUMAŞ TAKVİYELİ SANDVİÇ KOMPOZİTLERDE YÜZEYLERDEKİ ELYAF KATMAN SAYISININ EĞİLME DAVRANIŞINA ETKİSİ

Öz

Bu çalışmada karbon elyaf yüzeyli üç boyutlu dokuma sandviç kompozit yapıların farklı yüzey
katman sayısının eğilme davranışına etkisi incelenmiştir. Alt ve üst yüzey malzemesi olarak kullanılan
reçine emdirilmiş karbon elyaflar vakum infüzyon tekniği kullanılarak 2, 3 ve 4 katman halinde üç
boyutlu ara kumaşa birleştirilmiştir. Reçine malzemesi olarak epoksi ve polyester olmak üzere iki farklı
polimer malzeme kullanılmıştır. Farklı yüzey kalınlıklarına ve reçine malzemesine sahip sandviç
kompozit plakalar standartlara uygun numuneler halinde kesilmiştir. Eğilme davranışını test etmek için
oda sıcaklığında üç nokta eğilme deneyleri yapılmış ve numunelerin eğilme kuvveti-sehim eğrileri
oluşturulmuştur. Sonuçlar, sandviç kompozitlerin yüzey malzemesi katman sayısı artışı ile birlikte
eğilmeye karşı dirençlerinin arttığını göstermiştir. Epoksi matrisli kompozitlerin polyestere kıyasla daha
yüksek dayanım sergiledikleri ve katman kalınlığına bağlı dayanımın artışının daha fazla olduğu tespit
edilmiştir.

Anahtar Kelimeler

Sandviç kompozit, karbon elyaf, katman, eğilme, reçine

Kaynakça

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