ANALISA PENGARUH RASTER ANGLE DAN ORIENTASI PRINTING TERHADAP AKURASI STRUT DIAMETER DAN SIFAT MEKANIK LATTICE BODY CENTERED CUBIC

Surton, Muhammad Salman (2024) ANALISA PENGARUH RASTER ANGLE DAN ORIENTASI PRINTING TERHADAP AKURASI STRUT DIAMETER DAN SIFAT MEKANIK LATTICE BODY CENTERED CUBIC. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Metode 3D printing Fused Deposition Modeling (FDM) membentuk lapisan demi lapisan plastik yang dilelehkan, menciptakan cacat proses berupa step layer. Cacat ini pada strut struktur lattice dapat mengurangi sifat mekanik lattice dan membuat perbedaan geometri diameter dan area kontak yang lebih sempit. Penelitian ini bertujuan untuk menentukan orientation angle dan raster angle yang mendekati hasil uji struktur lattice BCC ideal. Dalam penelitian ini, digunakan dua variasi orientation angle (0° dan 15°) serta dua variasi raster angle (0° dan 45°). Metode eksperimen compression test diterapkan untuk mengukur beban maksimum, kekakuan, dan energi ketahanan dari lattice. Hasil penelitian menunjukkan bahwa kombinasi orientation angle dan raster angle terbaik dalam hal beban maksimum adalah 101 N pada orientasi 0° dan raster angle 45°. Struktur yang paling kaku memiliki nilai kekakuan tertinggi sebesar 95,26 N/mm pada orientasi 0° dan raster angle 45°, sedangkan serapan energi terbanyak tercatat sebesar 63,61 N.mm. Analisis fenomena determinstik dilakukan untuk mengetahui manakah yang lebih kuat menahan beban geser dan beban normal. Hasil ini juga mendekati hasil dengan geometri CAD. Penelitian ini memberikan rekomendasi yang berharga bagi design engineer dalam mengaplikasikan struktur lattice pada berbagai bidang. Dengan memahami pengaruh sudut pencetakan dan raster angle terhadap sifat mekanik, struktur yang lebih kuat dan efisien dapat dirancang, meminimalkan dampak negatif dari cacat proses.

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The Fused Deposition Modeling (FDM) 3D printing method forms layer by layer of melted plastic, creating process defects known as step layers. These defects in the lattice structure struts can reduce the mechanical properties of the lattice and create differences in diameter geometry and narrower contact areas. This research aims to determine the orientation angle and raster angle that approach the ideal BCC lattice structure test results. In this study, two variations of orientation angles (0° and 15°) and two variations of raster angles (0° and 45°) were used. The compression test experimental method was applied to measure the maximum load, stiffness, and energy absorption of the lattice. The results showed that the best combination of orientation angle and raster angle in terms of maximum load was 101 N at 0° orientation and 45° raster angle. The stiffest structure had the highest stiffness value of 95.26 N/mm at 0° orientation and 45° raster angle, while the highest energy absorption was recorded at 63.61 N.mm. A deterministic phenomenon analysis was conducted to determine which combination better withstands shear and normal loads. These results also closely approach the CAD geometry results. This research provides valuable recommendations for design engineers in applying lattice structures in various fields. By understanding the influence of printing angles and raster angles on mechanical properties, stronger and more efficient structures can be designed, minimizing the negative impact of process defects.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Beban Kompressi, Lattice Structure, Metode Elemen Hingga
Subjects:	Q Science > Q Science (General) Q Science > Q Science (General) > Q180 Gravitation.
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Salman
Date Deposited:	08 Aug 2024 01:29
Last Modified:	08 Aug 2024 01:29
URI:	http://repository.its.ac.id/id/eprint/114637

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