TABAKALI KOMPOZİT PLAKLARIN DÜŞÜK HIZLI DARBE ETKİSİNİN DENEYSEL ÇALIŞMASI

Year 2010, Issue: 021, 77 - 90, 15.04.2010

Ceyla Akın Mehmet Şenel

Abstract

Bu
çalışma düşük hızlı darbe yükü etkisi altında E-cam elyaf/epoxy tabakalı
plakların tepkisinin incelenmesi ile ilgilidir. Darbe testleri, özel olarak
tasarlanmış düşey ağırlık düşürme test cihazı kullanılarak yapılmıştır. Bu
çalışmada 8 kat simetrik olarak tabakalanmış kompozitler kullanılmıştır. Bu
kompozitler, [0/90]_2s, [-30/30]_2s,
[-45/45]_2s olarak üç faklı şekilde istiflenmiştir ve
sonuçları birbirleri ile karşılaştırılmıştır. Hasar oluşumları numunede
batmadan başlayarak tam delinme durumuna kadar kademeli olarak incelenmiştir.
Çalışmalar 140mmx140mm’lik kare plakların iki ve dört taraflı ankastre bağlantı
durumlarında yapılmıştır. Darbe yükleri plak ortalarına uygulanmıştır.

Keywords

Düşük hızlı darbe, E-cam fiber/epoxy, tabakalı kompozit malzemeler

AN EXPERIMENTAL STUDY OF LOW VELOCITY IMPACT RESPONSE FOR COMPOSITE LAMINATED PLATES

Abstract

This paper deals with the response of E-glass/epoxy
laminated plates subjected to low velocity impact loading. Impact tests were
performed using a specially designed vertical drop-weight testing machine. The
samples used for this study were 8 plies symmetric laminated composites. These
composites were characterized by three different stacking sequences, [0/90]_2s,
[-30/30]_2s, [-45/45]_2s, and they were compared
with each other. Specimens were impacted at constant weight and different
impact energies. Damage processes examined step by step from initiation of
damage to final perforation. The studies were carried out on plate dimension of
140mm x140mm with both four and two opposite sides clamped. Impact loads were
applied at the center of each plate. 

Effect of different clamped cases,
stacking sequences and impact energies were investigated on the composite
structures.

Keywords

Low velocity impact; E-glass/epoxy; laminated composite materials

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