ANALISIS PENGARUH KETEBALAN LAPISAN TERHADAP KEKASARAN PERMUKAAN PRODUK CETAK PLA MENGGUNAKAN TEKNOLOGI FDM UNTUK INDUSTRI MANUFAKTUR
Abstrak
Manufaktur aditif (AM), umumnya dikenal sebagai pencetakan 3D, menggunakan berbagai metode, termasuk Pemodelan Deposisi Fusi (FDM). Penelitian ini berfokus pada performa kekasaran permukaan baling-baling yang dicetak 3D menggunakan FDM dengan material PLA. Penelitian ini bertujuan untuk menentukan ketebalan lapisan yang optimal untuk mencapai kualitas permukaan terbaik dalam manufaktur aditif. Kekasaran permukaan diukur dengan menggunakan rata-rata aritmatika (Ra) dan diukur pada titik tengah, pangkal, dan ujung baling-baling dengan mikroskop pemindaian laser Olympus. Percobaan dilakukan dengan ketebalan lapisan 0.1 mm, 0.2 mm, dan 0.3 mm, dengan tetap menjaga parameter pencetakan lainnya tetap konstan, yaitu temperatur pencetakan pada 210°C, kecepatan pencetakan 50%, diameter nozzle 0.4 mm, temperatur bed 70°C, garis pola pengisi, kerapatan pengisi 100%, tipe penyangga tepi, ketebalan dinding 0.8 mm, dan diameter material eSUN 1.75 mm. Hasilnya menunjukkan bahwa ketebalan lapisan 0.1 mm menghasilkan kualitas permukaan dan akurasi dimensi tertinggi pada semua titik yang diuji pada baling-baling, tetapi mempengaruhi waktu pencetakan. Hasil ini menggarisbawahi peran penting ketebalan lapisan dalam mengoptimalkan permukaan akhir dan integritas struktural komponen cetak 3D dalam proses manufaktur aditif
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