ÖĞÜTÜLMÜŞ KARBON ELYAF TAKVİYELİ SLA BASKILI FOTOPOLİMER KOMPOZİTLERİN ÇEKME VE DARBE DAVRANIŞININ DENEYSEL İNCELENMESİ

Abstract

Eklemeli imalat teknolojileri, karmaşık geometrilerin düşük malzeme kaybı ve üretim maliyeti ile üretilmesine olanak sağlamaktadır. Bu teknolojiler arasında stereolitografi (SLA), yüksek baskı çözünürlüğü ve iyi yüzey kalitesi sayesinde önemli bir ilgi görmektedir. Bununla birlikte, SLA yöntemi ile üretilen fotopolimer parçaların mekanik performansı birçok mühendislik uygulaması için sınırlı kalabilmektedir. Bu çalışmada, öğütülmüş karbon elyaf partikülleri ile takviye edilmiş SLA baskılı fotopolimer kompozitlerin çekme ve Charpy darbe davranışı deneysel olarak incelenmiştir. Numuneler beş farklı doluluk oranında (%20, %40, %60, %80 ve %100) ve beş farklı takviye oranında (0, %0.4, %0.8, %1.2 ve %1.6 ağırlıkça) üretilmiştir. Çekme testleri ASTM D638 Tip V standardına göre, Charpy darbe testleri ise ASTM D256 standardına uygun olarak gerçekleştirilmiştir. Deney sonuçları doluluk oranının artmasının hem çekme dayanımını hem de darbe tokluğunu artırdığını, buna karşılık öğütülmüş karbon elyaf ilavesinin mekanik özellikleri genel olarak azalttığını göstermiştir. En yüksek mekanik özellikler %100 doluluk oranına sahip ve takviye içermeyen numunelerde elde edilmiştir. Elde edilen bulgular, doluluk oranı ve partikül takviyesinin birlikte etkisini ortaya koymakta ve SLA ile üretilen fotopolimer kompozitlerin mekanik performansının iyileştirilmesine yönelik önemli bilgiler sunmaktadır.

Keywords

• Stereolitografi (SLA)
• Fotopolimer kompozitler
• Öğütülmüş karbon elyaf
• Doluluk oranı
• Charpy darbe testi.

Supporting Institution

TÜBİTAK

Ethical Statement

Yazarlar tarafından herhangi bir çıkar çatışması beyan edilmemiştir.

Thanks

Bu çalışma, “Öğütülmüş Karbon Elyaf Takviyeli Reçine Kullanılarak Farklı Dolgu Oranlarıyla Üretilen SLA Baskılı Numunelerin Mekanik Özelliklerinin İncelenmesi” başlıklı proje kapsamında TÜBİTAK 2209-A Üniversite Öğrenci Araştırma Projeleri Destek Programı tarafından desteklenmiştir. Yazarlar ayrıca, deneysel çalışmalar sırasında değerli destekleri için Çukurova Üniversitesi Makine Mühendisliği Bölümü Mekanik Laboratuvarı ve Otomotiv Mühendisliği Laboratuvarı'na teşekkür ederler.

EXPERIMENTAL INVESTIGATION OF TENSILE AND IMPACT BEHAVIOR OF SLA-PRINTED PHOTOPOLYMER COMPOSITES REINFORCED WITH MILLED CARBON FIBER

Abstract

Additive manufacturing technologies enable the production of complex geometries with low material waste and manufacturing cost. Among these technologies, stereolithography (SLA) has attracted considerable attention due to its high printing resolution and surface quality. However, the mechanical performance of photopolymer parts produced by SLA is often limited for structural applications. In this study, the tensile and Charpy impact behavior of SLA-printed photopolymer composites reinforced with milled carbon fiber particles was experimentally investigated. Specimens were produced at five different infill ratios (20%, 40%, 60%, 80%, and 100%) and five different reinforcement contents (0, 0.4, 0.8, 1.2, and 1.6 wt.%). Tensile tests were conducted according to ASTM D638 Type V standard, while Charpy impact tests followed ASTM D256. The results showed that increasing the infill ratio significantly improved both tensile strength and impact toughness, while the addition of milled carbon fiber particles generally reduced the mechanical performance of the printed composites. The highest mechanical properties were obtained in specimens produced with 100% infill and without reinforcement. These findings provide new insight into the combined effects of infill ratio and particle reinforcement and may serve as a practical guideline for improving the mechanical performance of SLA-printed photopolymer composites.

Keywords

• Stereolithography (SLA)
• Photopolymer composites
• Milled carbon fiber
• Infill ratio
• Charpy impact test.

Supporting Institution

TÜBİTAK

Ethical Statement

No conflict of interest was declared by the authors.

Thanks

This study was supported by the TÜBİTAK 2209-A University Students Research Projects Support Programme under the project titled “Investigation of the Mechanical Properties of SLA-Printed Specimens Produced with Different Infill Ratios Using Milled Carbon Fiber Reinforced Resin.” The authors would also like to thank the Mechanical Laboratory of the Department of Mechanical Engineering and the Automotive Engineering Laboratory of Çukurova University for their valuable support during the experimental studies.

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