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All Journal Jurnal Keteknikan Pertanian Jurnal Teknologi Rekayasa Mesin Sinergi Journal of ICT Research and Applications Indonesian Journal of Science and Technology JOURNAL OF SCIENCE AND APPLIED ENGINEERING Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas) Jurnal Pengabdian Masyarakat Teknik Journal of Applied Sciences and Advanced Technology Indonesian Journal of Computing, Engineering, and Design International Journal of Computer and Information System (IJCIS) Mechanical Engineering for Society and Industry Makara Journal of Science Journal of Community Services: Sustainability and Empowerment Jurnal Polimesin ASEAN Journal for Science and Engineering in Materials
Kushendarsyah Saptaji
Universitas Sampoerna
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Journal : Sinergi

 1 
DEVELOPMENT OF ELECTRIC DISCHARGE MACHINING (EDM) USING SOLENOID ACTUATOR FOR EDUCATIONAL PURPOSE Kushendarsyah Saptaji; Arnaz Asa Sholeh; Gigih Priyandoko; Ignatius Budi Hadisujoto
SINERGI Vol 25, No 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.3.005

Abstract

The increasing number of materials with variation in properties, especially hard-to-cut, leads to the need for an advanced machining method to process such material. Electric Discharge Machining (EDM) is one of the advanced machining methods widely used for hard-to-cut alloys. The EDM process uses an electrode as the conductor of electrical current to erode the metal alloys and is supported by other components. Due to EDM's high cost and high energy consumption, developing a low-cost EDM and simpler EDM setup is necessary, especially for educational purposes in laboratory activity. However, the EDM design and setup required to produce the desired “spark” have always been a challenge for researchers and manufacturers. In this research, a small-scale EDM setup was built. A solenoid actuator is used to generate simple mechanical movement. The movement is used to control the gap between the workpiece and the electrode to produce a spark. The solenoid actuator is used because of its low cost and simple mechanism. The proposed EDM setup is successfully fabricated and works appropriately by generating sparks and a hole cavity during the process. There are six cavity holes produced in mild steel workpiece during the experiments with various parameters such as current (5A, 7A, and 10A) and frequency (10 Hz and 20 Hz). The varied parameter shows that the higher current and lower frequency removed more materials. In contrast, the higher frequency produced a better quality of the cavity hole. However, the lack of flushing quality on the material debris during the process results in the formation of excess metals around the edge of the hole. 
Improvement of ankle foot orthotics fabrication using 3D printing method Saptaji, Kushendarsyah; Manasikana, Dinda Arina; Juniasih, Octarina Adiati; Ramadhani, Mochammad Rafli; Oktaviandri, Muchamad; Ramadhan, Anwar Ilmar; Asmara, Yuli Panca
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.015

Abstract

Orthotics are the body support devices used for correction, immobilization, fixation, and prevention of paralysis. The greatest number of orthotics utilized by people suffering from plantarflexion and dorsiflexion disability, especially in Indonesia, is ankle foot orthotic (AFO). However, the duration associated with fabricating AFO through conventional methods is considered time-consuming. This paper aims to fabricate ankle foot orthotics (AFO) using innovative combinations of 3D scanning and 3D printing. The method begins with 3D scanning of the patient’s lower limb using photogrammetry (3DF Zephyr). The design is generated and adjusted, afterwards, the orthotic prototype is produced by fused deposition modeling (FDM) 3D printing using polypropylene (PP) material. This choice is attributed to the material's advantages, such as being lightweight, rigid, durable, and cost-effective. The 3D mesh model scanned using 3DF Zephyr shows good quality and more precise results. In addition, the prototype produced using 3D printing was tested by walking based on normal gait analysis’s angle of foot and calf measurement, which shows a maximum range of motion (ROM) of 16.1˚. The proposed methods of fabricating orthotic prototypes can successfully reduce the processing time by approximately 70% compared to the conventional method. 
Co-Authors Abdi Hanra Sebayang Abdillah, Sultansyah Reza Adiati Junaisih, Octarina Aditiya Harjon Alvika Meta Sari Anak Agung Ngurah Perwira Redi Anwar Ilmar Ramadhan Arnaz Asa Sholeh Arridina Susan Silitonga - Asep Bayu Dani Nandiyanto Asmelash Gebremariam Asriyanti, A. Asriyanti, Asriyanti Ayu Wardani, Dilla Azhari, Azmir Azmairit Aziz Bryan, Jonathan Budiarta, Wahyu Nur Chang, Steven Henderson Dindamilenia Choirunnisa Hardiyasanti Dyota, Arya Smara Efrizon Umar Efrizon Umar Fernandez, Nikolas Krisma Fernandez, Nikolas Krisma Hadi Fijai Naja Azmi Fikri, Muhamad Rausyan Firmansyah Firmansyah Firmansyah Firmansyah Frandito, Raffy Gloria Ellysian Aprilia Hadisujoto, Budi Hadisujoto, Ignatius Budi Hadisujoto, Ignatius Budi Sutanto Handani, Nadya Geraldine Handika, Raditya Edra Raja Ifat Ifat Ifat Ifat, Ifat Ignatius Budi Hadisujoto Ignatius Budi Sutanto Hadisujoto Ignatius Budi Sutanto Hadisujoto Indra Pertama Putra islam, sri susilawati Istianto Budhi Rahardja Iwan Setiawan Iwan Setiawan Iza, Nurlaely Rohmatul Juniasih, Octarina Adiati Kalam, Ikramin Kamila, Fatima Tasya Khoiriyah, Nisa Kusuma Dewi, Tiara Lanaggalih, Jarvis Eros Lubis, Steven Abed Daniel M.S. Hendriyawan Achmad Manasikana, Dinda Arina Muchamad Oktaviandri Muchammad Fachrizal Ali Muhamad Rausyan Fikri Muhamad Rausyan Fikri Muhammad Akhsin Muflikhun Muhammad Dadi Saputra Muhammad Lukman Baihaqi Alfakihuddin Muhammad, Azka Aulia Mulia, Vania Katherine Muryanti, Laely Natayu, Amartya Nurprihatin, Filscha Ong, Janice Priyandoko Gigih Putra, Indra Pertama Rabbani, Ariq Naufal Raden Dadan Ramdan Raffy Frandito Ramadhani, Mochammad Rafli Ramadhona Saville Rausyan Fikri, Muhamad Reflin, Rhainna Rheizkhira Safety Husna Pangestika Semendo, Rifqi Putra Setiawan, Hanif Rama Yuda Sholeh, Arnaz Asa Siswojo, Nathanael Ansel Siti Nur Afiqah Surya Danusaputro Liman Tedi Kurniawan Tiara Kusuma Dewi Tong Keong Sai Tri Yuni Hendrawati Triawan, Farid Trisnadewi, Titin Tumada, Azahri Tumada, Azhari Utomo, Muhammad Satrio Wandy Wandy Weandri, Aliffa Ratumahesa Wibowo, Djati Widianingrum, Sinta Wong, Miguel Silvano Hermawan Yheni Mulyaningsih Yuli Panca Asmara Yuli Panca Asmara