Alüminyum-karbon elyaf sandviç kompozit levhaların V-bükme işleminde bükme açılarının ve bükme yönlerinin geri esneme üzerindeki etkisi

Bu çalışmada, alüminyum-karbon elyaf sandviç levhaların V bükme operasyonu neticesinde oluşan geri esneme davranışı deneysel olarak incelenmiştir. Bükme yönünün geri esneme davranışı üzerine olan etkisini incelemek amacıyla farklı bükme yönlerindeki sandviç kompozit levhalar 15°, 30°, 45°, 60°, 75° ve 90° bükme açılarında şekillendirilmiştir. Farklı bükme yönlerinde şekillendirilen sandviç kompozit levhalarda meydana gelen geri esneme değerlerinin birbirine çok yakın olduğu tespit edilmiştir. Ayrıca, T1 (saat yönünün tersinde) bükme yönündeki sandviç kompozit levhaların 75° ve 90° bükme açılarındaki testlerinde alüminyum ve karbon elyaf plakalar arasında açılmalar görülürken, T2 (saat yönünde) bükme yönündeki sandviç kompozit levhaların 75° ve 90° bükme açılarında ise dış taraftaki alüminyum sac levhalarda yırtılmalar oluşmuştur.

Effect of bending angles and bending directions on springback in V-bending of aluminum-carbon fiber sandwich composite plates

In this study, the springback behavior that occurs as a result of V-bending operation of aluminum-carbon fiber sandwich plates is examined experimentally. In order to examine the effect on the springback behavior of the bending direction, sandwich composite plates in bending directions T1 and T2 were shaped at the bending angles of 15°, 30°, 45°, 60°, 75° and 90°. It was found that the springback values that occurred in sandwich composite plates that were shaped in different bending directions were very close. In addition, while separations between aluminum and carbon fiber plates were found in tests performed at 75° and 90° of bending angles in T1 (anticlockwise) bending direction, the aluminum sheet metals on the outer part were partly cracks at 75° and 90° of bending angles in T2 (clockwise) bending direction.

Keywords:

Sandwich composite plate, v bending, springback, bending direction,

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