Electronic Theses and Dissertation

Teknologi 3d printing adalah metode manufaktur aditif yang memungkinkan pencetakan objek tiga dimensi dengan menumpuk lapisan-lapisan material secara bertahap. teknologi pencetakan atau dikenal dengan sebutan additive manufacturing (am) mengalami kemajuan pesat. penelitian ini bertujuan untuk mengevaluasi dampak variasi densitas terhadap sifat mekanik poly lactid acid. eksperimen ini melibatkan pengujian tarik pada spesimen hasil pencetakan 3d dengan densitas 10%, 50%, dan 100%. hasil penelitian menunjukkan bahwa pada nozel 0.4 mm, nilai tertinggi mencapai 38,84 mpa pada densitas 100%; pada nozel 0,6 mm, mencapai 44,73 mpa pada densitas 100%; sementara pada nozel 0,8 mm, mencapai 42,08 mpa. analisis sifat mekanik pla menunjukkan semakin tinggi densitasnya, semakin tinggi nilai uji tarik yang dihasilkan. kata kunci : 3d printing, manufaktur aditif, nozzle, density, uji tarik

3D printing technology is an additive manufacturing method that allows printing three-dimensional objects by gradually stacking layers of material. Printing technology, also known as Additive Manufacturing (AM), is experiencing rapid progress. This research aims to evaluate the impact of density variations on the mechanical properties of Poly Lactid Acid. This experiment involved tensile testing on 3D printed specimens with densities of 10%, 50%, and 100%. The results showed that at the 0.4 mm nozzle, the highest value reached 38.84 MPa at 100% density; on a 0.6 mm nozzle, it reaches 44.73 MPa at 100% density; while on a 0.8 mm nozzle, it reaches 42.08 MPa. Analysis of the mechanical properties of PLA shows that the higher the density, the higher the resulting tensile test value. Keywords: 3D Printing, Additive Manufacturing, Nozzle, Density, Tensile test