Stereolitografi ve eriyik yığma modellemesi eklemeli imalat yöntemleriyle üretilen numunelerin mekanik özelliklerinin karşılaştırılması

Öz

Eklemeli üretim (AM) teknolojisi, çeşitli uygulamalar için 3 boyutlu parçaların hızlı imalatıyla büyük ilgi gördü. Bu teknolojideki en popüler iki teknik olan Erimiş Biriktirme Modelleme (FDM) ve Stereolitografi (SLA), karmaşık şekillere sahip fonksiyonel parçaların hızlı ve ucuz bir şekilde üretilmesini mümkün kılar. Bu yöntemlerle üretilen parçaların mekanik özelliklerinin belirlenmesi ilgili alanlarda verimli çalışma açısından önemlidir. Bu çalışmada SLA ve FDM tipi 3D yazıcılarda üç farklı polimer malzeme (UVR, PLA ve ABS) kullanılarak çekme, basma ve 3 noktalı bükme testleri dahil olmak üzere kırk beş test numunesi üretildi. Numuneler ASTM standartlarına göre %75 doluluk oranında yazdırılır. Numunelerin mekanik özelliklerinin belirlenmesi amacıyla deneysel çalışmalar yapılmıştır. Numuneler arasında en yüksek dayanım değerleri UVR malzemeden yapılan çekme, basma ve eğme test numunelerinde sırasıyla 60,39 MPa, 127,74 MPa ve 118,35 MPa oldu. Numunelerin yüzey pürüzlülüğünü, yüzey topoğrafyasını ve kompozisyonunu incelemek için mekanik özelliklere ek olarak sertlik ve SEM analizleri yapıldı.

Anahtar Kelimeler

• Eklemeli imalat
• Sıkıştırma testi
• Erimiş biriktirme modellemesi
• Stereolitografi
• Çekme testi
• 3 Nokta Eğme Testi

Comparison of Mechanical Properties of Samples Fabricated by Stereolithography and Fused Deposition Modelling

Abstract

Additive manufacturing (AM) technology has attracted significant attention with the rapid fabri-cation of 3D parts for various applications. With fused deposition modeling (FDM) and stereo-lithography (SLA), the most used methods in this technology, it is possible to produce functional parts with complex shapes quickly and cheaply. Determining the mechanical properties of the parts produced by these methods is important in terms of efficient operation in the relevant fields. This study, 45 test specimens were fabricated using three different polymer materials (UVR, PLA, and ABS) in SLA and FDM type 3D printers, including tensile, compression, and 3-point bending tests. Samples are printed at a 75% fill rate according to ASTM standards. Experimental studies were carried out to determine the mechanical properties of the samples. Among the samples, the highest strength values in tensile, compression and bending test samples made of UVR material were 60.39 MPa, 127.74 MPa and 118.35 MPa, respectively. In addition to mechanical properties, hardness, and SEM analyses were performed to examine the surface roughness, surface topography, and composition of the samples. As a result, the effects on the mechanical properties of the samples fabricated by the UVR-based SLA method and the PLA-ABS-based FDM method were examined and compared.

Keywords

• Additive manufacturing
• Stereolithography
• Fused deposition modelling
• Tensile test
• Compression test
• 3-point bending test

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