The Effects of Process Parameters on Mechanical Properties and Microstructures of Parts in Fused Deposition Modeling

Abstract

Fused deposition modeling is an additive manufacturing technology that produces parts layer by layer deposition of semi molten thermoplastic materials. Although there are many technologies that can be used for the production of plastic based parts in additive manufacturing, the most preferred method is Fused deposition modeling due to low costs, minimal wastage and the ease of use. In addition to the advantages of the method, it has many process parameters. These parameters have an effect on the mechanical properties of the manufactured parts. In this study, test samples were produced from ABS Plus and carbon fiber reinforced ABS composite materials by using two different process parameters as build angle and infill density then tensile tests were performed on the produced samples. As a result of tensile tests, the effects of the process parameters on the mechanical properties of the parts were investigated. Scanning electron microscopy images were taken from the fracture surfaces and the changes caused by the process parameters were evaluated. The results show that the increase in the infill density exhibited an increase in the mechanical properties in all parts and the different build angles have significant effect on determination of mechanical properties.

Keywords

• Fused deposition modeling,Build angle

Eriyik Biriktirme Yönteminde Üretim Parametrelerinin Mekanik Özelliklere Ve Parçaların İç Yapısına Etkisinin İncelenmesi

Abstract

Eriyik biriktirme yöntemi termoplastik esaslı malzemelerin yarı eriyik hale getirilerek birbiri üstüne katman katman yığılması ile üretim gerçekleştiren bir eklemeli imalat teknolojisidir. Eklemeli imalatta plastik esaslı parçaların üretimi için kullanılabilecek birçok teknoloji bulunmasına karşın, düşük maliyet, düşük artık malzeme oranları ve kullanım kolaylığı gibi nedenlerle en çok tercih edilen yöntem eriyik biriktirme yöntemidir. Yöntem sunduğu avantajların yanı sıra birçok üretim parametresine sahiptir. Bu parametreler üretilen parçaların mekanik özellikleri üzerinde etkili olmaktadır. Bu çalışmada üretim açısı ve doluluk oranı olmak üzere iki farklı üretim parametresi kullanılarak, ABS Plus ve karbon elyaf takviyeli ABS kompozit malzemelerinden test numuneleri üretilmiş ve üretilen numunelere çekme testleri uygulanmıştır. Çekme testleri sonucu üretim parametrelerinin parçaların mekanik özellikleri üzerindeki etkileri incelenmiştir. Kırık yüzeylerden Taramalı Elektron Mikroskobu (SEM) görüntüleri alınarak, üretim parametrelerinin parça içyapısında meydana getirdiği değişimler değerlendirilmiştir. Elde edilen sonuçlarda, doluluk oranının artması tüm numunelerde iyi mekanik özellikler gösterirken, farklı üretim açılarının mekanik özellikler üzerinde önemli etkiye sahip olduğu görülmüştür.

Keywords

• Eriyik biriktirme yöntemi,Üretim parametreleri,Polimer matrisli kompozitler

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