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All Journal International Journal of Science and Engineering (IJSE) TEKNIK Rotasi Sainteknol : Jurnal Sains dan Teknologi Jurnal Teknologi Rekayasa Mesin Sinergi Prosiding Semnastek DINAMIKA Jurnal Ilmiah Teknik Mesin JTT (Jurnal Teknologi Terpadu) Teknika: Engineering and Sains Journal JRST (Jurnal Riset Sains dan Teknologi) RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer) Prosiding Semhavok Jurnal Pengabdian Masyarakat Teknik Journal of Applied Sciences and Advanced Technology BASKARA: Journal of Business and Entrepreneurship Indonesian Journal of Computing, Engineering, and Design ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Borobudur Engineering Review Aceh International Journal of Science and Technology
Anwar Ilmar Ramadhan
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Muhammadiyah Jakarta, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance 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 
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. 
Experimental investigation on stability and thermal conductivity of SiO2 nanoparticles as green nanofluids for application thermal system Ramadhan, Anwar Ilmar; Umar, Efrizon; Hendrawati, Tri Yuni; Sari, Alvika Meta; Rahardja, Istianto Budhi; Aziz, Azmairit; Firmansyah, Firmansyah; Yulianto, Sulis; Azmi, Wan Hamzah
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.018

Abstract

In the last few years, much research has focused on the stability and improvement of the thermo-physical properties of single-component nanofluids. Some studies have not made many improvements to the stability and thermophysical properties of various types of green nanofluids from several variations of nanoparticles. Green nanofluids must be developed to improve heat transfer performance from their stability and thermal conductivity factors. Stability and thermal conductivity of Nano-silicate suspended in a base mixture of water /ethylene glycol with the ratio of 60:40, different volume concentrations were investigated. The experiments carried out were the stability of the green nanofluids investigated for volume concentrations of 0.1~0.3% and temperature conditions from 30 to 70°C for thermal conductivity measurement using TEMPOS Thermal Properties Analyzer. The experimental results showed that the stability analysis of the green nanofluids prepared by the UV-Vis method was stable up to 30 days after preparation with a sonication time of 1 hour with a ratio of 70-80%. The evaluation of the zeta potential for green nanofluids obtained a value of 33.57 mV with a moderate stability classification. The highest thermal conductivity for the green nanofluids was obtained at 0.3%, and the maximum increase was 17% higher than that of the base liquid (W/EG). Green nanofluids with a concentration of 0.1% gave the lowest effective thermal conductivity of 1.09 time at 70°C.
Co-Authors Abduh Al Afghani Abrori, Muhammad Reza Achmad Nuril Fajar Adawiyah, Sa'diyah El Ade Muslimat Aditya Firmanto Agung Julianto Agung Siswahyu Ahdiat Leksi Siregar Ahmad Fauzi Ahmad Yakub Ahmad Yakub, Ahmad Akmal Imam Faisal Alfa Taufan Latif Alvika Meta Sari Amri Abdulah Anggoro Septilarso Annisa Mulia Rani Annisa Mulia Rani Aryadi Suwono As Natio Lasman As Natio Lasman Azhari, Azmir Azmairit Aziz Azmi, Wan Hamzah Bambang Setiawan Boy Setiawan Choirul Anwar Dalil Sumiyarsono, Dalil Daruki Daruki Dede Erland Ramadhan Deni Almanda Deni Almanda Deni Almanda Dermawan, Erwin Dharu Dewi Dhian Trisnadi Setyawan Diah Safitri Ningrum Dicky Dimyati Dino Rimantho Djoko Hadi Prajitno Djoko W Karmiadji Djoko W Karmiadji Dodi Mulyadi Dyota, Arya Smara edy susanto Efrizon Umar Efrizon Umar Efrizon Umar Efrizon Umar Efrizon Umar Eka Revi Ruswandi Eka Revi Ruswandi, Eka Revi Eko Kiswoyo Erwin Dermawan Erwin Dermawan Erwin Dermawan Erwin Dermawan Erwin Dermawan Erwin Dermawan Ery Diniardi Fachri Amrulloh Fadliondi Fahmi Al Diansyah Faisal, Akmal Imam Fathan Mubina Dewadi Fatma Sari Fikri, Muhamad Rausyan Fikriyansyah Fikriyansyah Fikriyansyah, Fikriyansyah Firmansyah Firmansyah Firmansyah Firmansyah Fitriana, Rian Frisca Amalia Ummay Govinda Gatot Aditya Hadisujoto, Ignatius Budi Sutanto Hasan Basri Hasan Basri Hasan Basri Hasan Basri Hasan Basri Hayya Afifah Hendra Saputra Hendra, Franka Idhar Mahasen Indra Setiawan Indriasari Indriasari Iphov Kumala Sriwana Irwan Firmansyah Ismiyati Ismiyati Istianto Budhi Rahardja Istianto Budhi Rahardja Istianto Budhi Rahardja Istianto Budhi Rahardja Istianto Budhi Rahardja Iwan Setiawan Januar Parlaungan Siregar Juni Afriani Juniasih, Octarina Adiati Kamila, Fatima Tasya Khoirudin Khoirudin Khoirudin Khoirudin Kisman H Mahmud Korada Viswanatha Sharma Kushendarsyah Saptaji M Al-Haramain M. Ivan Satryo Manasikana, Dinda Arina Maya Dewi Dyah Maharani Mohd Amiruddin Fikri Mohd Fairusham Ghazali Mohd Hamisa Abdul Hamid Mohd Zawawi, Nurul Nadia Muchamad Oktaviandri Muhammad Arifangga Muhammad Arifangga, Muhammad Muhammad Dadi Saputra Muhammad Daroji Muhammad Reza Abrori Muhammad Reza Abrori, Muhammad Reza Muhammad, Azka Aulia Mulyadi Mulyadi Munzir Qadri Murtalim Mushoffa Ali Firdaus Mushoffa Ali Firdaus, Mushoffa Ali Mutiara Salsabila N Nelfiyanti Nana Rahdiana Nana Rahdiana Nana Rahdiana Natayu, Amartya Nathanael Tandian Nur Yulianti Hidayah, Nur Yulianti Nurrochman, Taufik Nurul Hidayati Fithriyah Nurul Nadia Mohd Zawawi Rahardja, Istianto Budhi Rahmawati Suryani Ramadhani, Mochammad Rafli Rantawi, Azhar Basyir Raslan A. Alenezi Rasma Rasma Rasma Rasma Ratri Ariatmi Nugrahani Rian Fitriana Ricko Valderama Ridhwan Adhitya Ibnimatiin Riki Effendi Rikman Rikman Riza Samsinar Rizalman Mamat Rizkyta, Velia Ayu Roni Muhammad Susanto Rudiatin, Endang Rulan Dinary Rulan Dinary Runik Machfiroh Safril Safril Safril Sasi Kirono Semendo, Rifqi Putra Setiawan, Hanif Rama Yuda Sharifah Norsakinah Syed Zainal Abidin Sharma, Korada Viswanatha Shieddique, Apang Djafar Siregar, Ahdiat Leksi Sitti Nurbaya Ambo Sony Hari Mukti, Sony Hari Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sulis Yulianto Sulistiono Sulistiono Sumanto Suripto, Heri Suroto Munahar Susanto, Roni Muhammad Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin Syawaluddin, Syawaluddin Syawaluddin, Syawaluddin Sylvia Madusari Taufik Nurrochman Thomas Djunaedi Tri Yuni Hendrawati Triawan, Farid Trisnadewi, Titin Tumada, Azhari Vector Anggit Pratomo Waldi Isnaini Wan Hamzah Azmi Wan Hamzah Azmi Wiwik Sudarwati Wiwit Kartika Sari Yudi Dermawan Yudistirani, Sri Anastasia Yuli Panca Asmara Yusuf Yusuf