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Journals / Erciyes Üniversitesi Fen Bilimleri Enstitüsü Fen Bilimleri Dergisi / 2025 / Cilt: 41 Sayı: 3

Investigation of the Effect of Reinforcement Type and Ratio on the Fatigue Performance of PLA Matrix Polymer Composites Produced by Additive Manufacturing

Eklemeli İmalat ile Üretilen PLA Matrisli Polimer Kompozitlerde Takviye Tipi ve Oranının Yorulma Performansına Etkisinin İncelenmesi

Şaban Murat Ünlü(ERCİYES ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0001-6709-2569
Ömer Barışkan Yasan(ERCİYES ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-5344-1198
Abdullah Göçer(ERCİYES ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, MAKİNE MÜHENDİSLİĞİ BÖLÜMÜ)0000-0002-2180-9349
Pages
999–1009
Publication Date
2025-12-31
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AI Summary & Key Takeaways

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

The results showed an increase in fatigue life in the 1% NC reinforced composite compared to pure PLA.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, the fatigue behavior of materials produced by additive manufacturing from PLA composites reinforced with 5%, 10%, and 15% carbon fiber (CF) and 1%, 3%, and 5% nano-clay (NC) was investigated.
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Key Findings & Data:Tests were performed on specimens obtained from reinforced composites at a single load value (125 gr) and compared with the fatigue life of pure PLA at the same load value.
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Conclusion & Impact:The results showed an increase in fatigue life in the 1% NC reinforced composite compared to pure PLA.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Eklemeli İmalat · Polimer Kompozit · PLA

Abstract

In this study, the fatigue behavior of materials produced by additive manufacturing from PLA composites reinforced with 5%, 10%, and 15% carbon fiber (CF) and 1%, 3%, and 5% nano-clay (NC) was investigated. Fatigue specimens were printed according to the standard of the rotary bending test system and tested at different stress amplitudes to determine the fatigue life of the materials. The S-N graph of pure PLA was created using these values. Tests were performed on specimens obtained from reinforced composites at a single load value (125 gr) and compared with the fatigue life of pure PLA at the same load value. The results showed an increase in fatigue life in the 1% NC reinforced composite compared to pure PLA. The fatigue life of materials with 3% and 5% NC reinforcement remained below that of pure PLA. The fatigue lives of CF-reinforced materials remained below that of pure PLA at all reinforcement ratios. The fatigue life decreased with increasing reinforcement ratio in both NC and CF-reinforced materials. The highest fatigue life performance was observed in specimens containing 1% NC. The results obtained are consistent with the tensile strength values of the materials. SEM images of the fracture surfaces revealed how the reinforcement elements and their quantities affected the formation of fatigue damage mechanisms.

Özet

Bu çalışmada, PLA ve % 5, 10 ve 15 karbon fiber (CF), ve % 1, 3 ve 5 nano kil (NK) ile takviyelendirilmiş PLA kompozit filamantlerden eklemeli imalat yöntemiyle üretilen malzemelerin yorulma davranışları incelenmiştir. Dönel eğilmeli test sisteminin standardına uygun olarak basılan yorulma numuneleri, farklı gerilme genliklerinde test edilerek malzemelerin yorulma ömürleri elde edilmiştir. Bu değerler ile saf PLA’nın S-N grafiği oluşturulmuştur. Takviyeli kompozitlerden elde edilen numunelere ise tek bir yük değerinde (125 gr) testler uygulanmış ve saf PLA’nın aynı yük değerindeki yorulma ömrü ile karşılaştırılmıştır. Sonuçlar, % 1 NK takviyeli kompozitte saf PLA’ya göre yorulma ömründe artış olduğunu göstermiştir. NC takviyesi % 3 ve % 5 olan malzemelerde yorulma ömrü saf PLA’nın altında kalmıştır. CF takviyeli malzemelerin yorulma ömürleri ise tüm takviye oranlarında saf PLA’nın altında kalmıştır. Hem NK hem de CF takviyeli malzemelerde yorulma ömrü takviye oranının artması ile düşmüştür. En yüksek yorulma ömrü performansı, % 1 oranında NC içeren numunelerde gözlemlenmiştir. Elde edilen sonuçlar malzemelerin çekme mukavemet değerleri ile örtüşmektedir. Kırılma yüzeylerinin SEM ile elde edilen görüntüleri, takviye elemanlarının ve miktarlarının yorulma hasar mekanizmalarının oluşumunu nasıl etkilediğini ortaya koymuştur.

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Cite This Article

Ünlü, Ş. M., Yasan, Ö. B., Göçer, A. (2025). Investigation of the Effect of Reinforcement Type and Ratio on the Fatigue Performance of PLA Matrix Polymer Composites Produced by Additive Manufacturing. Erciyes Üniversitesi Fen Bilimleri Enstitüsü Fen Bilimleri Dergisi, Cilt: 41 Sayı: 3, 999–1009. https://doi.org/10.65520/erciyesfen.1840103

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