3B yazıcıda farklı yazdırma hızlarında ABS ve PLA malzeme ile üretilen çekme test numunelerinin mekanik özelliklerinin karşılaştırılması

Öz

Bu çalışmada, Ultimaker 2 Extended 3 boyutu yazıcı ile farklı yazdırma hızlarında (20-40-60-80-100-120-140mm/s), ABS (acrylonitrile butadiene styrene) ve PLA (poly-lactic acid) malzeme kullanılarak çekme test numuneleri üretilmiştir. Yazdırma hızının, mekanik özellikler üzerindeki etkisi araştırılmıştır. Üretilen numunelerin kütleleri, sertlikleri ve yüzey pürüzlülükleri ölçülmüş, porozite değerleri hesaplanmış ve üretilen numunelere çekme testi yapılmıştır. Çekme testi sonrasında kopmuş numunelerin kopma bölgelerinden taramalı elektron mikroskobu (TEM) ile görüntüler alınmıştır. Her iki malzeme ile aynı parametrelerde üretilen numunelerin mekanik özellikleri kıyaslanmıştır. Sonuç olarak; PLA malzeme ile üretilen numunelerin çekme mukavemetlerinin ABS malzeme ile üretilen numunelerden daha yüksek olduğu, ABS malzeme ile üretilen numunelerin kopma uzaması değerlerinin de PLA malzeme ile üretilen numunelerden daha yüksek olduğu tespit edilmiştir.

Anahtar Kelimeler

• 3B yazıcı
• eriyik yığın modelleme (EYM)
• çekme testi
• porozite
• taramalı elektron mikroskobu (TEM)

Comparison of mechanical properties of tensile test specimens produced with ABS and PLA material at different printing speeds in 3D printer

Öz

In this study, tensile test specimens have been produced using ABS (acrylonitrile butadiene styrene) and PLA (poly-lactic acid) material at different printing speeds (20-40-60-80-100-120-140mm/s) with Ultimaker 2 Extended 3D printer. The effect of printing speed on mechanical properties has been investigated. Masses, hardness and surface roughness of the produced samples have been measured, porosity values have been calculated and tensile test has been performed on the produced samples. After the tensile test, images have been taken by scanning electron microscopy (SEM) from the breaking regions of the broken samples. The mechanical properties of the samples produced with the same parameters with both materials have been compared. As a result; it has been determined that the tensile strength of the samples produced with PLA material are higher than the samples produced with ABS material, and the elongation at break values of the samples produced with ABS material are higher than the samples produced with PLA material.

Anahtar Kelimeler

• 3D printer
• fused deposition modelling (FDM)
• tensile test
• porosity
• scanning electron microscopy (SEM)

Kaynakça

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