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Journals / Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji / 2026 / Cilt: 13 Sayı: 2

Effects of Adhesive Type and Surface Preparation on the Mechanical Strength of Thermoplastic and CFRP Structures

Termoplastik ve CFRP Yapıların Birleştirilmesinde Yapıştırıcı Cinsi ve Yüzey Hazırlığının Malzemenin Mekanik Dayanımı Üzerindeki Etkileri

Emin Öztürk(DÜZCE ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0009-0000-4070-9661
Mert Kılınçel(DÜZCE ÜNİVERSİTESİ)0000-0001-7057-4390
Gülden Kabakçı(DÜZCE ÜNİVERSİTESİ, MESLEK YÜKSEKOKULU)0000-0002-7181-4998
Ahmet Kömürcü(DÜZCE ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0009-0009-1039-094X
Pages
538–552
Publication Date
2025-06-30
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AI Summary & Key Takeaways

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

The results show that DP190 adhesive achieves optimal performance with 120-grit sanding, DP460 performs best with 180-grit sanding, and epoxy is ideal for high-strength applications.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Composite materials are widely used in industries for their lightweight, durability, and flexibility.
📊
Key Findings & Data:Tensile tests were performed according to ASTM D5868, and SEM analyses were conducted to evaluate damage mechanisms.
💡
Conclusion & Impact:The results show that DP190 adhesive achieves optimal performance with 120-grit sanding, DP460 performs best with 180-grit sanding, and epoxy is ideal for high-strength applications.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Kompozit · termoplastik · termoset

Abstract

Composite materials are widely used in industries for their lightweight, durability, and flexibility. Carbon fiber-reinforced composites are particularly demanded and used in aerospace, automotive, and space industries due to their high strength and low weight. They are also critical in manufacturing high-pressure hydrogen storage tanks, where the interfacial strength between thermoplastic and thermoset materials is crucial. This study investigates the effects of adhesive type and surface preparation on the mechanical strength of carbon fiber-reinforced composites bonded with HDPE. Tensile tests were performed according to ASTM D5868, and SEM analyses were conducted to evaluate damage mechanisms. The results show that DP190 adhesive achieves optimal performance with 120-grit sanding, DP460 performs best with 180-grit sanding, and epoxy is ideal for high-strength applications. These findings contribute to enhancing the safety of Type-IV hydrogen tanks and developing more reliable bonding methods for industrial applications.

Özet

Kompozit malzemeler, hafiflik, dayanıklılık ve esneklikleriyle birçok endüstride tercih edilmektedir. Havacılık, otomotiv ve uzay endüstrilerinde yaygın olan karbon fiber takviyeli kompozitler, yüksek dayanım ve düşük ağırlıklarıyla dikkat çekmektedir. Yüksek basınçlı hidrojen depolama tanklarının üretiminde de sıklıkla kullanılan bu malzemeler, termoplastik ve termoset yapıların birleşim bölgelerindeki dayanımlarıyla önem kazanmaktadır. Bu çalışmada, karbon fiber epoksi kompozitlerin HDPE malzemelerle birleştirilmesinde yapıştırıcı türü ve yüzey hazırlığının mekanik dayanım üzerindeki etkileri araştırılmıştır. ASTM D5868 standardına uygun çekme testleri yapılmış, SEM analizleriyle hasar mekanizmaları incelenmiştir. Sonuçlar, DP190 yapıştırıcısının 120’lik zımpara ile, DP460’ın 180’lik zımpara ile optimum performans gösterdiğini, epoksinin ise yüksek dayanım gerektiren uygulamalarda öne çıktığını göstermiştir. Bu bulgular, Tip-IV hidrojen tanklarının güvenliğini artırmak ve endüstriyel uygulamalarda daha etkin birleştirme yöntemleri geliştirmek adına önemli bir katkı sunmaktadır.

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Cite This Article

Öztürk, E., Kılınçel, M., Kabakçı, G., Kömürcü, A. (2025). Effects of Adhesive Type and Surface Preparation on the Mechanical Strength of Thermoplastic and CFRP Structures. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji, Cilt: 13 Sayı: 2, 538–552. https://doi.org/10.29109/gujsc.1625639

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