Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2021 / Cilt: 21 - Sayı: 3

Effect of Cut-outs on the Free Vibration Response of Basalt/CarbonHybrid Composites

Kesiklerin Bazalt / Karbon Hibrit Kompozitlerin Serbest Titreşim Tepkisine Etkileri

Pages
724–734
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results show that the damping characteristics of the composite samples can be remarkably improved with the help of cut-outs which provide improvements approximately between 2.41% and 16.65% in damping ratio values.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The current work deals with an experimental investigation about the influence of cut-outs on dynamic characteristics of basalt/carbon hybrid fiber reinforced composite laminates.
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Key Findings & Data:The results show that the damping characteristics of the composite samples can be remarkably improved with the help of cut-outs which provide improvements approximately between 2.41% and 16.65% in damping ratio values.
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Conclusion & Impact:This point out that employment of cut-outs can be a promising application to meet the natural frequency requirements of engineering systems constructed with hybrid fiber reinforced composite laminates.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The current work deals with an experimental investigation about the influence of cut-outs on dynamic characteristics of basalt/carbon hybrid fiber reinforced composite laminates. The composite samples have been fabricated via vacuum assisted resin transfer molding technique and cut-outs in the form of triangular, square and circular shapes with equal areas have been processed on them to systematically analyze the influences of cut-outs. The dynamic characteristics of the samples have been examined by conducting free vibration-damping tests and expressed in terms of natural frequency and damping ratio using the frequency response and time-acceleration response. The results show that the damping characteristics of the composite samples can be remarkably improved with the help of cut-outs which provide improvements approximately between 2.41% and 16.65% in damping ratio values. The maximum and minimum variations in damping ratio have observed for non-hybrid carbon fiber reinforced composite samples with triangular cut-out (T-C6) and hybrid basalt/carbon fiber reinforced composite samples with circular cut-out (C-B6), respectively. On the other hand, the presence of cutouts have led to decreases in natural frequency values as a result of reduction in stiffness caused by the cut-outs. This point out that employment of cut-outs can be a promising application to meet the natural frequency requirements of engineering systems constructed with hybrid fiber reinforced composite laminates.

Özet

Mevcut çalışma, kesiklerin bazalt / karbon melez fiber takviyeli lamine kompozitlerin dinamik özellikleriüzerindeki etkisi hakkında deneysel bir araştırma ile ilgilidir. Kompozit numuneler, vakum destekli reçinetransfer kalıplama tekniği ile imal edilmiş ve kesiklerin etkilerini sistematik olarak analiz etmek içinüzerlerinde eşit alanlara sahip üçgen, kare ve dairesel şekiller şeklinde delikler açılmıştır. Numunelerindinamik özellikleri, serbest titreşim sönümleme testleri yapılarak incelenmiş ve frekans tepkisi vezaman-ivme tepkisi kullanılarak doğal frekans ve sönümleme oranı cinsinden ifade edilmiştir. Sonuçlar,kompozit numunelerin sönümleme özelliklerinin, sönümleme oranı değerlerinde yaklaşık %2,41 ile%16,65 arasında artışlar sağlayan kesikler yardımıyla önemli ölçüde iyileştirilebileceğini göstermektedir.Sönümleme oranındaki maksimum ve minimum varyasyonlar, sırasıyla üçgen kesikli hibrit olmayankarbon fiber takviyeli kompozit numuneler (T-C6) ve dairesel kesikli hibrit olmayan bazalt fiber takviyelikompozit numuneler (C-B6) için gözlemlenmiştir. Öte yandan, kesiklerin varlığı, deliklerin neden olduğusertlikte azalmanın bir sonucu olarak doğal frekans değerlerinde düşüşlere yol açmıştır. Bu, kesiklerinkullanılmasının, hibrit fiber takviyeli kompozit laminatlarla inşa edilen mühendislik sistemlerinin doğalfrekans gereksinimlerini karşılamak için umut verici bir uygulama olabileceğini göstermektedir.

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Cite This Article

ÖZBEK, Ö., BOZKURT, Y. T. (2022). Effect of Cut-outs on the Free Vibration Response of Basalt/CarbonHybrid Composites. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 21 - Sayı: 3, 724–734. https://ajindex.com/articles/420978

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