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Journal : Sebatik

ANALISA PARAMETER 3D PRINTING TIPE FDM TERHADAP AKURASI DIMENSI DENGAN FILAMEN BERBAHAN DAUR ULANG PLASTIK LOW DENSITY POLYETHYLENE (LDPE) DAN POLYPROPYLENE (PP) Tri Hannanto Saputra; Adhi Setya Hutama; Ana Ningsih; Herda Agus Pamasaria
Sebatik Vol 26 No 1 (2022): Juni 2022
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v26i1.1682

Abstract

Perkembangan mesin 3D printing dapat membawa dampak negatif bagi lingkungan karena dapat meningkatkan jumlah sampah plastik. Pembuatan 3D printing filament dari bahan plastik daur ulang merupakan salah satu langkah tepat untuk mengatasi permasalahan sampah plastik, selain itu juga sejalan dengan semakin maraknya penggunaan mesin 3D printing khususnya dengan metode FDM. Optimalisasi 3D printing filament dari bahan plastik daur ulang merupakan salah satu langkah tepat untuk mengatasi permasalahan sampah plastik. Namun, diperlukan parameter yang tepat untuk mengolah filamen dari bahan plastik daur ulang menjadi produk cetakan dengan mempertimbangkan kualitas hasil. Penelitian ini bertujuan untuk mendapatkan parameter proses yang optimum pada mesin 3D printing FDM untuk menghasilkan kualitas produk yang maksimal dari bahan plastik daur ulang, sehingga sampah plastik dapat dikurangi. Penelitian ini menggunakan mesin 3D Printing tipe FDM dan filamen plastik daur ulang Low Density Polyethylene (LDPE) dan Polypropylene (PP) sebagai bahan cetak. Metode penelitian yang digunakan yaitu menggunakan metode taguchi. Parameter penelitian yang digunakan adalah printing temperature, layer height dan print speed. Kualitas diukur dengan dimensi yang terdiri dari panjang (sumbu x) dan lebar (sumbu y), geometri yang terdiri dari tegak lurus dan paralelisme, dan kekasaran permukaan produk. Pengolahan data menggunakan metode Taguchi yang dipadukan dengan PCR-TOPSIS. Hasil penelitian menunjukkan bahwa Parameter optimum untuk filament berbahan recycle LDPE adalah kombinasi printing temperature 230 0C, layer height 0.16 mm dan print speed 30 mm/s. Parameter optimum untuk filament berbahan recycle PP adalah kombinasi printing temperature 245 0C, layer height 0.12 mm dan print speed 35 mm/s.
MODEL BISNIS PADA PENDIDIKAN VOKASI SMK JURUSAN TEKNIK PERMESINAN DALAM IMPLEMENTASI TEACHING FACTORY Wardana, Yustinus Rosa Indra; Saputra, Tri Hannanto; Andrea, Reza
Sebatik Vol. 27 No. 2 (2023): Desember 2023
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v27i2.2413

Abstract

Teaching factory adalah suatu konsep pembelajaran di sekolah vokasi yang berbasis produksi atau jasa yang mengacu kepada standar dan prosedur yang berlaku di industri. SMK dengan jurusan teknik permesinan adalah salah satu satuan pendidikan vokasi yang berdampak dalam mengimplementasikan teaching factory. Dampak disebabkan karena peralatan dan bahan yang dibutuhkan dalam implementasi teaching factory tidaklah murah, apalagi jika biaya hanya dibebankan pada sumbangan pembinaan pendidikan (SPP) SMK. Implementasi teaching factory dapat lebih ringan dalam pembiayaan apabila SMK jurusan teknik permesinan tidak hanya menerapkan model pembelajaran praktik saja, namun juga menjalankan bisnis agar bengkel dapat berjalan mandiri secara finansial sebagai tempat praktik peserta didik. SMK jurusan teknik permesinan membutuhkan formulasi model bisnis dengan konsep kanvas berdasarkan kurikulum pembelajaran dan kebutuhan industri untuk implementasi teaching factory. Desain penelitian ini adalah deskriptif kualitatif. Dalam penelitian ini nanti diharapkan mendapatkan data secara mendalam dari obyek pengkajian bersumber dari hasil wawancara dengan narasumber yang sudah ditentukan. Teknik wawancara yang dilakukan adalah tanya jawab terstruktur dengan pemberian pertanyaan. Wawancara dilakukan pada tiga Kepala SMK jurusan teknik permesinan dan perwakilan IDUKA yang menjadi pelanggan SMK terkait. Dari hasil formulasi kanvas model bisnis untuk SMK jurusan teknik permesinan, diharapkan dapat mengimplementasikan teaching factory dengan tepat. Value propotition yang ditawarkan untuk SMK jurusan teknik permesinan adalah jasa manufaktur baik itu permesinan manual, CNC, maupun kerja bangku dengan harga yang lebih terjangkau. Selanjutnya, value propotition terkait penciptaan mesin tepat guna sesuai kebutuhan industri di sekitarnya. Perubahan value propotition ini menuntut SMK jurusan teknik permesinan untuk mengubah statuta dan struktur organisasi sekolah.
Strategy for Improving Vocational Students' Human Skills through Cross-Level Social Project Mentoring Prastiantomo, Gregorius Adi; Wijayanto, St Agus; Prasojo, Yohanes Budi; Saputra, Tri Hannanto; Nugroho, Adi
Sebatik Vol. 29 No. 2 (2025): December 2025
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v29i2.2714

Abstract

Vocational higher education often emphasizes technical competence (hard skills), whereas modern industrial dynamics demand mastery of human skills such as adaptive communication, empathy, and collaborative leadership. This study aims to analyze the effectiveness of Project-Based Learning (PjBL) implementation in Compulsory Curriculum Courses (MKWK) as a strategy for developing human skills among Politeknik ATMI Surakarta students. Using a descriptive qualitative method, this study involved students in mentoring cross-level social projects at five partner schools in Solo Raya, ranging from elementary to vocational high school levels. Data were collected through participatory observation, in-depth interviews, project portfolio documentation, and Focus Group Discussions. The results indicate that cross-level interaction encourages a significant transformation in students from being technical-minded to becoming more socially aware. Improvements in human skills are concretely visible in adaptive communication skills when teaching elementary students, leadership in managing junior high student group dynamics, and team collaboration in mural projects at vocational schools. This strategy proves effective in bridging the social skill gap of vocational students, preparing them to be graduates who are not only technically competent but also humanist, adaptive, and possess civic engagement.
Design and Initial Testing of Augmented Reality Learning Media for Manufacturing Engineering Drawing Materials Saputra, Tri Hannanto; Ismadi, Ignatius Henry; Hapsari, Fransiska Karlentina; Nugroho Cahyo Widodo, Petrus Iwan; Prasetyo, Benedictus Alvin; Aditomo, Muhammad Amin
Sebatik Vol. 29 No. 2 (2025): December 2025
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v29i2.2715

Abstract

The rapid development of the manufacturing industry requires vocational graduates to possess high competence in technical drawing literacy according to the International Organization for Standardization (ISO). However, students often face cognitive barriers in visualizing 2D technical drawing representations into 3D forms, particularly in orthogonal projection and section view materials. This study aims to design and conduct initial testing of an Augmented Reality (AR)-based learning medium developed using the Rapid Application Development (RAD) method. The application is built on the Android platform using Unity 3D marker-based tracking method. This research produced a prototype application capable of projecting 3D models of machine components in real-time on top of printed technical drawing modules. Initial testing was conducted using the Black Box Testing method to validate system functionality. Test results indicate that key features such as marker detection, interactive object rotation, and visualization of hidden lines ran successfully under various lighting conditions. This application offers a potential solution to reduce students' cognitive load in understanding abstract spatial concepts.
Mechanical System Design for a Handling System Demonstrator for Simulating Real Production Environments Ismadi, Ignatius Henry; Saputra, Tri Hannanto; Widyatmoko, Ratmono Hari; Prasetyo, Andi; Wijaya, Dikky Kusuma; Supriyono, Romi; Praba, Alto Gandhang
Sebatik Vol. 29 No. 2 (2025): December 2025
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v29i2.2719

Abstract

The paradigm shift in manufacturing towards Industry 4.0 requires the availability of vocational education infrastructure that is capable of representing actual production floor conditions. The material handling system is a vital component in the integration of the industrial supply chain, which involves precise synchronization between mechanical design and control systems. However, the educational tools currently available often fail to simulate the complexity of this integration due to designs that are too simple or not industry standard. This study aims to design and realize a mechanical system in a material handling system simulator by adopting the Learning Factory concept. The research was conducted using the Research and Development (R&D) method with the ADDIE approach. The main focus of the research was the design of a modular mechanical structure using aluminum profiles, conveyor transmission mechanisms, and an integrated electro-pneumatic control system. The design results were validated through the realization of physical prototypes and functional testing. The research results show that the developed mechanical design has high rigidity and is capable of simulating the material transportation process with stability. The designed control system successfully integrated inductive and optical sensors and pneumatic actuators with 100% sorting logic accuracy. This simulator provides a realistic platform for students to learn about the interaction between mechanical and control components in a safe but authentic production environment.