Investigasi Flexural Properties Hasil Cetak 3D Printer Berbahan Carbon Fiber Polylactic Acid untuk Pembuatan Telapak Kaki Palsu
DOI:
https://doi.org/10.23887/jstundiksha.v13i3.84387Keywords:
Flexural Properties, 3D Printing, Carbon Fiber, Polylactic AcidAbstract
Telapak kaki palsu jenis Energy-storing-and-returning dan Bionic harus mempunyai kekuatan dan kekakuan tertentu. Material Polylactic Acid yang diperkuat dengan serat karbon (CF-PLA) dapat digunakan untuk meningkatkan kekuatan dari foot yang dibuat dengan 3D printing. Parameter proses dari 3D printing juga bisa digunakan untuk mendapatkan kekuatan tertentu dari foot. Tujuan dari penelitian ini adalah untuk menyelidiki pengaruh parameter 3D printing yaitu infill density, shell thickness, dan temperatur ekstruder terhadap rasio kekuatan tekuk dibanding massa, modulus kekakuan tekuk, dan regangan tekuk dari hasil cetakan berbahan CF-PLA serta memberi rekomendasi nilai parameter yang optimal. Rancangan eksperimen yang digunakan mengikuti metode Taguchi Grey Relational Analysis dengan tiga level dan dua kali replikasi. Spesimen uji tekuk berdasarkan standar ISO 178 digunakan sebagai obyek penelitian ini. Dari hasil penelitian dapat disimpulkan bahwa parameter infill density dan shell thickness adalah parameter yang berpengaruh. Penelitian ini berkontribusi memberikan wawasan bahwa material CF-PLA berpotensi digunakan untuk membuat telapak kaki palsu dengan proses 3D printing. Untuk mendapatkan nilai rasio kekuatan tekuk dan massa, modulus elastisitas tekuk, dan regangan tekuk yang maksimum, nilai yang direkomendasikan untuk infill density adalah sebesar 40%, shell thickness adalah sebesar 1,2 mm, dan temperatur ekstruder adalah sebesar 210 °C.
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