Optimization of Printing Parameters of PLA and ABS Produced by FFF

Yıl 2024, Cilt: 5 Sayı: 2, 286 - 302, 20.12.2024

İsmail Aykut Karamanlı , Kadircan Tahnal

https://doi.org/10.55546/jmm.1566700

Öz

In this study, the changes in tensile strength of PLA and ABS specimens, the most commonly used materials in additive manufacturing with FFF, were investigated as a function of fill rate and print speed. Tensile specimens were fabricated for different fill rates and speeds and tensile tests were performed. Increasing the fill rate increases the tensile strength. Increasing or decreasing the print speed too much has a negative effect on tensile strength. Filament usage and printing times were also calculated. With the data obtained, an optimization model was created using response surface methodology. The aim of this study is to optimize the strength/cost of ABS and PLA, the two preferred FFF materials. The novelty of the study is to investigate the strength/cost optimization for different material types in terms of UTS, filament consumption and printing speed. For each material type, high tensile strength, low printing time and low filament used conditions were determined for the optimization model. The optimum parameters for PLA are obtained at 66.77% fill level and 78.43% speed rate. For ABS, optimum values are obtained at 79.5% fill rate and 135% speed rate. Then, samples were produced for optimum conditions and experiments and calculations were repeated. The numerical results obtained with the model were compared with the experimental results. It is found that the model estimates the output parameters with high accuracy. This proves the accuracy of the proposed optimization model.

Anahtar Kelimeler

3D printing, Tensile strength, ABS, PLA, Optimization

Proje Numarası

1919B012302277

Teşekkür

This study was supported by Scientific and Technological Research Council of Turkey (TÜBİTAK) with Project number of 1919B012302277.

FFF ile Üretilen PLA ve ABS'nin Baskı Parametrelerinin Optimizasyonu

Öz

Bu çalışmada FFF ile katmanlı imalatta en çok kullanılan malzeme türleri olan PLA ve ABS numunelerinin, doluluk oranı ve baskı hızına bağlı olarak, çekme dayanımlarındaki değişim araştırıldı. Çekme numuneleri farklı doluluk oranları ve farklı hızlar için üretildi ve çekme testleri yapıldı. Doluluk oranı artışı çekme dayanımını arttırmaktadır. Printing hızının çok arttırılması veya çok azaltılması ise çekme dayanımını olumsuz etkilemektedir. Ayrıca harcanan filament miktarları ve üretim süreleri de hesaplandı. Elde edilen verilerle yüzey yanıt yöntemi kullanılarak bir optimizasyon modeli oluşturuldu. Oluşturulan optimizasyon modeli her bir malzeme türü için ile yüksek çekme dayanımının, düşük üretim süresi ve harcanan filamentin olduğu baskı koşulları belirlendi. PLA için optimum parametreler %66.77 doluluk oranı, %78.43 baskı hızı koşullarında elde edilmektedir. ABS için ise optimum değerler; %79.5 doluluk oranı, %135 baskı hızı koşullarında elde edilmektedir. Sonrasında optimum koşullar için numuneler üretilerek deneyler ve hesaplamalar tekrarlandı. Model tahmini ile elde edilen nümerik sonuçlar ile deneysel sonuçlar karşılaştırıldı. Modelin çıktı parametrelerini büyük bir doğrulukla tahmin ettiği bulundu. Bu da önerilen optimizasyon modelinin doğruluğunun bir kanıtıdır.

Anahtar Kelimeler

3D baskı, Çekme dayanımı, ABS, PLA, Optimizasyon

Destekleyen Kurum

TÜBİTAK

Proje Numarası

1919B012302277

Teşekkür

This study was supported by Scientific and Technological Research Council of Turkey (TÜBİTAK) with Project number of 1919B012302277.

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