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Sosialisasi Potensi Ekonomi Sampah MMP Untuk Masyarakat di Wilayah Bekasi Timur Anak Agung Ngurah Perwira Redi; Aulia Rachmah; Natasha Ifardo; Arum Githa; Farid Triawan; Christianus I Wayan Eka Budiartha
Charity : Jurnal Pengabdian Masyarakat Vol. 9 No. 2 (2026): Charity-Jurnal Pengabdian Masyarakat
Publisher : PPM Universitas Telkom

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/charity.v9i2.10017

Abstract

Masalah limbah plastik kemasan berbahan campuran di Indonesia, khususnya di wilayah perkotaan seperti Bekasi, menjadi tantangan serius karena sulitnya proses daur ulang akibat struktur lapisannya yang kompleks. Program pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kesadaran dan partisipasi warga RW 023 Villa Taman Kartini, Bekasi Timur, dalam mengenali potensi ekonomi sirkular dari limbah MMP. Melalui pendekatan Participatory Action Research (PAR), kegiatan dilaksanakan dalam lima tahap, meliputi analisis kebutuhan, koordinasi, sosialisasi, pendampingan, dan evaluasi. Hasil menunjukkan bahwa meskipun tingkat kesadaran masyarakat terhadap isu MMP tinggi, tindakan pengelolaan masih rendah akibat keterbatasan infrastruktur dan sistem pendukung. Setelah sosialisasi, 96% responden menunjukkan ketertarikan terhadap produk hasil daur ulang, menandakan terbentuknya motivasi perilaku positif. Temuan ini diharapkan menjadi dasar pembentukan bank sampah MMP berbasis komunitas sebagai model pengelolaan ramah lingkungan di tingkat lokal.
Fabrication of Synthetic Lumbar Vertebrae by a Combination of FDM 3D-Printing and PU Foam Casting from Two Injection Techniques for Surgical Training Farid Triawan; Nisa Khoiriyah; A. Asriyanti; Muhammad Satrio Utomo; Kushendarsyah Saptaji; Nikolas Krisma Hadi Fernandez; Muhammad Akhsin Muflikhun
ASEAN Journal for Science and Engineering in Materials Vol 5, No 1 (2026): AJSEM: Volume 5, Issue 1, March 2026
Publisher : Bumi Publikasi Nusantara

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Abstract

This study aims to introduce a rapid and precise fabrication technique of lumbar vertebrae model that mimics the cortical and cancellous parts of the bone using polylactic acid (PLA) and polyurethane (PU) foam, respectively. An FDM 3D-printing using PLA filament was utilized to fabricate the cortical part, then PU foam was molded into the printed cortical to form the cancellous part. The fabricated model was examined by comparing its dimensions with the stereolithography (STL) model. Sequentially, density measurement, compressive test, and microstructure observation were performed to evaluate the specimen characteristics. The results showed that the dimensions of the vertebrae model agreed well with the STL model, with a discrepancy of less than 4%. The fabricated PU samples exhibited a density in the range of 476–557 kg/m³, elastic moduli of 3.99–7.17 MPa, and a pore size of 136.66–179.80 µm, which are lower than the properties of human bone. Despite that, the PU samples maintain their compressive strength of 0.329–0.589 MPa, which is within the range of cancellous human bone.
Design and Fabrication of Automated Stopper Mechanism with PLC-Controlled System and Ball Screw Mechanism Fahriza Fadhila; Farid Triawan
ASEAN Journal for Science and Engineering in Materials Vol 4, No 2 (2025): AJSEM: Volume 4, Issue 2, September 2025
Publisher : Bumi Publikasi Nusantara

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Abstract

The demand for high precision and efficiency in industrial cutting operations has driven the development of automated positioning mechanisms. Most traditional manual stopper systems in panel saws often suffer from inaccuracies, inefficiencies, and material waste. To address these issues, this study presents the design, implementation, and performance evaluation of a PLC-based automated stopper mechanism utilizing a ball screw system for precise linear motion. The system integrates a Programmable Logic Controller (PLC), stepper motor, ball screw mechanism, and Human-Machine Interface (HMI) to enable accurate positioning and real-time operator control. Performance tests validated the system’s reliability, precision, and suitability for industrial cutting applications. Speed evaluations confirmed that the stopper exceeded the 40 mm/s requirement, achieving 43.4 mm/s. Force resistance tests demonstrated structural stability under a 100 N load, with minimal deviations of 0.05 mm at 125 N and 0.10 mm at 150 N. Positioning accuracy tests further confirmed an average error of only 0.1 mm (0.005% deviation). The PLC executed motion commands with an average response time of 0.5 seconds, ensuring quick and reliable adjustments. These findings highlight the effectiveness of PLC-based automation in improving positioning accuracy, production speed, and overall usability in manufacturing environments.
Co-Authors A. Asriyanti AA Sudharmawan, AA Abdi Hanra Sebayang Abdulkareem Sh. Mahdi Al-Obaidi Adi Sutanto Aditiya Harjon Al-Obaidi, Abdulkareem Sh. Mahdi Alfatih, Shahreza Agung Ali, Muchammad Fachrizal Alvin Widjaya Amelia Nuraisyah Quinsi Jemy Anak Agung Ngurah Perwira Redi Anak Agung Ngurah Perwira Redi Anak Agung Ngurah Perwira Redi Andy Saputro Angelica, Putri Antonio, Ryan Anwar Ilmar Ramadhan Ariana Tulus Purnomo Ariq Naufal Rabbani Arnaz Sholeh Arridina Susan Silitonga - Arum Githa Asep Bayu Dani Nandiyanto Asmelash Gebremariam Asriyanti, A. Aulia Rachmah Azhari, Azmir Bahagia, Katherine Luckman Belfaqih, Idrus Husin Bilqist Imeilia Az Zahra Bryan, Jonathan Budiarta, Wahyu Nur Budiman, Bentang Arief Chang, Steven Henderson Charline Tiara Rehuellah Pingak Christianus I Wayan Eka Budiartha Denatra, Geraldy Dindamilenia Choirunnisa Hardiyasanti Djamari, Djati Djati Wibowo Djamari Djati Wibowo Djamari Dyota, Arya Smara Elin Rachmawati Eryanto, Ery Fahriza Fadhila Fini Bestiara Fitri Endrasari Frandito, Raffy Gabriela Chelvina Santiuly Girsang Gilang Raka Rayuda Dewa Girsang, Gabriela Chelvina Santiuly Githa, Arum Given Chris Yuenan Glenn Hanaya Gloria Ellysian Aprilia Hadisujoto, Budi Handani, Nadya Geraldine Hofifah, Siti Nur I Ketut Adhiarta Laksemana Ida Hamidah Ifat, Ifat Ignatius Pulung Nurprasetio Ignatius Pulung Nurprasetio Ihza Lisiano Al Qushai Ilham Prasetyo Ilman Arpi islam, sri susilawati Iwan Setiawan Iza, Nurlaely Rohmatul Kalam, Ikramin Kamila, Fatima Tasya Ken Risa Ayu Ndaru Ningrum Khoiriyah, Nisa Kushendarsyah Saptaji Kusuma, Felicia Laela Nur Fitria Laely Muryanti Lestari, Putri Yuni Lestari, Tika Endah Lubis, Steven Abed Daniel Maria Anggi Octaviani Mei Syaroh Misbakhul Munir Mochammad Rafli Ramadhani Muhamad Rausyan Fikri Muhammad Agni Catur Bhakti Muhammad Akhsin Muflikhun Muhammad Aziz Muhammad Dzulkifly Muhammad Johan Alibasa Muhammad Kunta Biddinika Muhammad Satrio Utomo Muhammad, Azka Aulia Mulia, Vania Katherine Musafri Yetti Nanda Indriana Natasha Ifardo Natayu, Amartya Nikolas Krisma Hadi Fernandez Nisa Khoiriyah Noorfi Azizah Rahim Nurfais, Ahmad Octary, Astrid Vanya Ong, Janice Putra, Indra Pertama Putri, Silmi Ridwan Qurriyatus Zahro Raffy Frandito Rafie Djajasoepena Rahmanda, Wahyu Rakshidatu Lestaluhu Ramadhan, Ammar Ramadhona Saville Reflin, Rhainna Rheizkhira Rizky, Agyl Fajar Robby Dwianto Widyantara Romadhon , Yusuf Safety Husna Pangestika Septiani, Tasya Diana Siagian, Michael Soritua Putrapratama Silmi Ridwan Putri Sineri, Gabriel Ayrton Andares Sinta Widianingrum Siswojo, Nathanael Ansel Siti Nur Hofifah Siti Zulaikah Sri Nararia Anggita Damayanti Surya Danusaputro Liman Sutrisno, Dwiartha Pambudi Alif Syamsuri, Ady Tong Keong Sai Trisnadewi, Titin Tumada, Azhari Unang Solihin Vania Katherine Mulia Wahyu Nur Budiarta Wandy Wandy Wibowo, Djati Wildan Rahmawan Yetti, Musafri Zulaikah, Siti