The Effects of Different Process Parameters of PLA+ on Tensile Strengths in 3D Printer Produced by Fused Deposition Modeling

Öz

Fused Deposition Modeling (FDM) is a three-dimensional (3D) printing technique in which parts are produced with thermoplastic polymer layers in a highly controlled manner. However, the production of ready-made parts using FDM is quite tricky. At the same time, the mechanical properties of parts printed with current print parameters and low-cost 3D printers also vary. The quality and mechanical characteristics of the final part are influenced by production parameters such as the extrusion temperature, infill density, infill pattern, print speed, and layer height. This study focused on the effects of the infill pattern, infill density and print speed parameters on the tensile strength and production time of model structures printed with PLA+ material. The tensile strength of the printed parts have been determined by a WDM-100E model tensile testing machine. In addition, the tensile strengths and production times of the parts have been optimized by the signal-to-noise (SN) ratio analysis. The results reveal that triangle infill pattern exhibits the best tensile strength at 40 mm/sec printing speed and 100% infill density. On the other hand, the lowest production time is observed in the gyroid infill pattern.

Anahtar Kelimeler

• Fused Deposition Modeling (FDM)
• PLA+
• Infill Density
• ANOVA

Birleştirme Yığma Modellemesiyle Üretilen 3B Yazıcıda PLA+’ın Farklı Proses Parametrelerinin Çekme Dayanımları Üzerindeki Etkileri

Öz

Birleştirmeli yığma modellemesi (BYM), son derece kontrollü bir şekilde termoplastik polimer katmanlar ile parçaların üretildiği 3B baskı tekniğidir. Ancak, BYM kullanılarak hazır parçaların üretimi baskı teknikleri arasında oldukça zordur. Bunun yanında, mümkün olan ayarlarla ve düşük maliyetli 3B yazıcılarla basılan parçaların mekanik özellikleri de değişkenlik göstermektedir. Ekstrüzyon sıcaklığı, dolgu deseni, baskı hızı ve katman yüksekliği gibi üretim parametrelerinin son parçanın kalitesini ve mekanik özelliklerini önemli ölçüde etkilediği bilinmektedir. Bu çalışmada, tarafımızdan imal edilen kartezyen tipi bir 3B yazıcıda, PLA+ malzeme kullanılarak hazırlanan numunelerin çekme dayanımı, baskı hızı ve dolgu deseni parametrelerine bağlı olarak incelenmiştir. ASTM D638-(IV) standardına göre farklı dolgu desenine, baskı hızına ve dolgu yoğunluğuna sahip toplam 36 adet test parçası hazırlanmıştır. Basılan parçalar çekme özelliklerinin belirlenebilmesi için çekme test makinesine tabi tutulmuşlardır. Parçaların çekme dayanımları ve üretim süreleri sinyal-gürültü (SN) oranına dayalı olarak analizleri yapılıp optimize edilmiştir. Sonuçlar, triangles geometrik desen, %100 dolgu yoğunluğu ve 40 mm/sn baskı hızında en iyi çekme dayanımı sergilendiğini ortaya koymaktadır. En düşük üretim süresi, gyroid geometrik desenlerde gözlemlenmiştir.

Anahtar Kelimeler

• Birleştirmeli Yığma Modelleme (BYM)
• PLA+
• Dolgu Yoğunluğu
• ANOVA

Kaynakça

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