Investigation of Low Velocity Transverse Impact Behavior of Metal Laminated Composites

Öz

In this study, transverse impact behavior of laminated metal composites was investigated.

Four different configuration namely (Al)3, (St)3, (Al+St+Al) and (St+Al+St), were made by using St37 DKP

and 1050-H14 Al alloy which all in 1 mm thick. Three layered composites were tested under various

impact energies. The panels were cut in 150x150 mm dimensions and they were restricted from their four

sides. Impactor that used in tests has mass of 6.35 kg and it has 24 mm semispherical tip. Each

configuration was impacted 10 J, 20 J, 30 J, 40 J and 50 J. Retrieved data from the tests were investigated

in forms of force-time, velocity-time and force-displacement. Finally, failures were evaluated for each

test.

Anahtar Kelimeler

• Metal laminated composite
• Transverse impact
• Failure behavior

METAL TABAKALI KOMPOZİTLERİN DÜŞÜK HIZLI ENİNE DARBEYE KARŞI DAVRANIŞLARININ İNCELENMESİ

Öz

Bu çalışmada metal kompozit levhaların düşük hızlı enine darbe davranışları incelenmiştir. 1 mm kalınlığında St37 DKP çelik ve 1050-H14 alaşımlı alüminyum plakalar kullanılarak dört farklı yerleşim düzeninde oluşturulan üç katmanlı kompozit levhalar farklı enerji seviyelerinde düşük hızlı darbe testlerine maruz bırakılmışlardır. 150x150 mm ebatlarında kesilen metal levhalar üç alüminyum, üç çelik, aliminyum+çelik+alüminyum ve çelik+alüminyum+çelik olacak şekilde dizilerek dört tarafı ankastre olacak şekilde bağlanmıştır. Deneylerde kullanılan vurucu kütlesi 6,35 kg olup 24 mm yarı küresel geometriye sahiptir. Hazırlanan her bir deney numunesinin ortasına 10J, 20J, 30J, 40J ve 50J enerji seviyelerinde darbe testleri yapılmıştır. Darbe testleri sonucu elde edilen kuvvet-zaman, hız-zaman ve kuvvet-yer değiştirme değişimleri grafikler halinde incelenmiştir. Her bir deney numunesinde meydana gelen hasarların boyutları ve hasar şekilleri değerlendirilmiştir.

Anahtar Kelimeler

• Metal tabakalı kompozit
• Enine darbe
• Hasar davranışı

Kaynakça

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