Tetikleyici tipinin dairesel KFTP çarpışma kutusu enerji emilim performansına etkisi

Yıl 2024, , 123 - 130, 15.01.2024

Ertan Kösedağ

https://doi.org/10.28948/ngumuh.1351499

Öz

Bu çalışmada enerji absorpsiyon performansı üzerine tetikleyici etkisinin incelenmesi için karbon fiber takviyeli polimer matrisli kompozitler üretilmiştir. Üretim vakum infüzyon metodu ile gerçekleştirilmiştir. Üretilen kompozit çarpışma kutularının üzerine üç çeşit tetikleme geometrisi açılmış ve bir de tetikleyici içermeyen karşılaştırma numunesi hazırlanmıştır. Bu dört farklı numunenin yarı-statik basma testleri gerçekleştirilmiş ve elde edilen datalar ile numunelerin enerji emme performansları değerlendirilmiştir. Bunun yanında numunelerin hasarları incelenmiş ve tetikleyici ile nasıl değiştiği ortaya konmuştur. Buna göre S-2 olarak tanımlanan numune (üst yüzeyinden aşağıya doğru dört simetrik yarık ile tetiklenen numune), emilen enerji açısından en iyi performansı sergilemiştir. Ayrıca açılan tetikleyiciler ile tepe kuvveti düşürülmüş ve maksimum tepe kuvveti azalmaları S-3 (delik tipi tetikleyiciye sahip) ve S-4 (yatay yarık tipi tetikleyiciye sahip) numunelerinde görülmüştür.

Anahtar Kelimeler

Karbon fiber takviyeli kompozitler, Çarpışma kutusu, Tetikleyici.

Response of trigger type to circular CFRP crash box energy absorption performance

Öz

In this study, carbon fiber reinforced polymer matrix composites were produced to investigate the trigger effect on energy absorption performance. Production was carried out by vacuum infusion method. Three types of trigger geometry were opened on the composite crash boxes produced and also comparison sample without trigger was prepared. The quasi-static compression tests of these four different samples were carried out and the energy absorption performances of the samples were evaluated with the obtained data. In addition, the damages of the samples were examined, and it was revealed how they changed with the trigger. Accordingly, the sample described as S-2, (the triggered sample, which consists of four symmetrical slits downwards from its upper surface) exhibited the best performance in terms of absorbed energy. Additionally, the peak forces were reduced with the triggers opened and the maximum peak force decreases were seen in S-3(with hole type triggers) and S-4 (with horizontal slit type triggers) samples.

Anahtar Kelimeler

Carbon fiber composites, Crash box, Trigger.

Kaynakça

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