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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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Mechanical Design and Analysis of Eco-Print Textile Pounding Machine Reflin, Rhainna Rheizkhira; Chang, Steven Henderson; Saptaji, Kushendarsyah; Triawan, Farid
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study presents the design and analysis of an automated eco-print textile pounding machine to reduce labor intensity and preserve artistic aspects. The machine offers an efficient and cost-effective solution for businesses to meet the demand for eco-friendly textiles while maintaining control over the pounding technique. By utilizing a rotating flywheel mechanism, the device achieves approximately an average of 5 pounds with a force of 8.54 N per second. It features unique characteristics, including disassembly capability and replaceable parts for easy maintenance and longevity. The safety analysis indicates favorable safety factor values of 5.68 and 4.70 for static and dynamic loads, respectively, in the most critical part. Based on these results, it can be concluded that this product is safe and has a predicted infinite lifespan. This study serves as a valuable reference for the development of enhanced eco-print textile pounding machines.
Integrating Instagram Analytics into Information Systems: Enhancing Pastry Sales Through Seasonal and Non-Festive Engagement Insights Weandri, Aliffa Ratumahesa; Wandy, Wandy; Saptaji, Kushendarsyah
International Journal of Computer and Information System (IJCIS) Vol 6, No 2 (2025): IJCIS : Vol 6 - Issue 2 - 2025
Publisher : Institut Teknologi Bisnis AAS Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29040/ijcis.v6i2.228

Abstract

This study investigated the integration of Instagram analytics into the information systems used by MSMEs in the pastry industry, with a focus on engagement trends. Using a descriptive quantitative approach, the research identifies a benchmark engagement rate of 16.5%, calculated from the midpoint between peak festive engagement and regular-day averages. Findings show a sharp increase in engagement leading up to Eid, exceeding the benchmark, followed by a noticeable decline post-event. In contrast, regular day engagement remains consistently below the benchmark. These patterns highlight the impact of cultural events on consumer behavior and the difficulty of sustaining interest afterward. The study concludes that integrating social media data into enterprise systems enables MSMEs to optimize marketing strategies and time promotions more effectively and respond better to seasonal trends, offering a practical model for data-driven decision-making in small businesses.
Implementation of 5S for the Small Business Workshop and Machine Shop: Community Service in RTG Custom Project Workshop Saptaji, Kushendarsyah; Hadisujoto, Ignatius Budi; Wibowo, Djati; Ifat; Putra, Indra Pertama; Nurprihatin, Filscha; Oktaviandri, Muchamad; Abdillah, Sultansyah Reza; Handika, Raditya Edra Raja; Lanaggalih, Jarvis Eros; Wong, Miguel Silvano Hermawan
Journal of Community Services: Sustainability and Empowerment Vol. 4 No. 02 (2024): September 2024
Publisher : Center for Research and Community Service of Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/jcsse.v4i2.503

Abstract

The implementation of the Japanese 5S methodology in a small motorcycle workshop in Bogor, Indonesia, has demonstrated significant improvements in workplace organization, operational efficiency, and safety. As Indonesia continues to lead motorcycle sales in the ASEAN region, the need for well-structured and efficient workshops becomes increasingly critical. However, many small businesses still struggle with inadequate organization and risk management. By applying the 5S principles—Sort (Sisih), Set in Order (Susun), Shine (Sapu), Standardize (Standar), and Sustain (Sinambung)—the workshop experienced reduced disorder, improved workflow, enhanced cleanliness, and well-defined procedures. These changes positively impacted productivity, workplace safety, and customer perception. Initial resistance to change was mitigated through comprehensive training and staff engagement, ensuring long-term adoption. This initiative aligns with Sampoerna University’s commitment to community development and serves as a scalable model for small businesses. With adequate government and NGO support, the 5S framework can enhance efficiency, competitiveness, and working conditions in Indonesia’s expanding motorcycle industry.
Economical 3D-Printed Robotic Arm for Educational Training Purpose Hadisujoto, Budi; Budiarta, Wahyu Nur; Frandito, Raffy; Saptaji, Kushendarsyah; Triawan, Farid; Wibowo, Djati; Ong, Janice
Jurnal Teknologi Vol. 17 No. 2 (2025): Jurnal Teknologi
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.2.89-100

Abstract

The advancement of Engineering technology requires universities as the frontier to educate engineering students with the latest skillset. Fast progress of Artificial Intelligence (AI) shown by the recently released of open AI such as ChatGPT, Genius, etc., has opened a new trend of technological tools. Hence, it is necessary or it can be said a must to train future engineers how to at least use these tools. Robotics and automation have long been used to assist humans in manufacture, logistic, health, and many other areas. Implementing AI into robotics creates intelligent systems which are predicted to be widely used. However, for educational institutions, especially in developing countries, the cost to afford the training robot equipment is still pricy. Here, we present designing and building of an economical robotic arm using 3D printed parts and open sources. The robot arm has six Degrees of Freedoms (DoF) and capable of lifting about 450 grams of maximum load. Some suggestions include future development are presented.
EFFECT OF ANNEALING ON THE MECHANICAL PROPERTIES OF FUSED DEPOSITION MODELING 3D PRINTED PLA Natayu, Amartya; Muhammad, Azka Aulia; Tumada, Azhari; Saptaji, Kushendarsyah; Trisnadewi, Titin; Triawan, Farid; Ramadhan, Anwar Ilmar; Azhari, Azmir
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1625

Abstract

Additive manufacturing or 3D printing is a rapidly moving fabrication technology with many usages in various fields. One of the methods used in 3D printing is Fused Deposition Modeling (FDM), where polylactic acid (PLA) filament is melted and deposited layer by layer to form the desired parts. This study explored the impact of annealing on the mechanical properties of 3D printed PLA specimens. Tensile specimens were produced using FDM following ASTM D638 standards. The specimens were annealed at 95°C and 145°C for 30, 60, and 120 minutes. Two untreated specimens served as benchmarks. Tensile tests were conducted on all specimens to evaluate their mechanical properties. The most optimal result was achieved with annealing at 95°C for 30 minutes, producing Young’s modulus of 3.3 GPA and the highest ultimate tensile strength (UTS) of 38.9 MPa. Other parameters resulted in lower properties compared to the untreated specimens.
A quad-cliff mechanism for eco-printing by pounding technique: design, manufacturing, and testing Triawan, Farid; Dyota, Arya Smara; Kamila, Fatima Tasya; Saptaji, Kushendarsyah; Fernandez, Nikolas Krisma Hadi; Silitonga, Arridina Susan; Sebayang, Abdi Hanra
Jurnal Polimesin Vol 22, No 5 (2024): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i5.5738

Abstract

Indonesia produces many types of textile products, such as clothing and custom fabrics often with unique patterns. To generate the patterns, there are many methods, including eco-printing by pounding process. However, the process, which was later referred to as eco-pounding, requires much time and energy, which can have a negative impact, such as musculoskeletal disorders, on the human body. To address this issue, the present work proposes a machine that can help the process of eco-pounding. Shigley’s method is applied to guide the design process of the machine. The design and manufacturing processes of the eco-pounding machine are presented, in which three machine design models are first introduced and then analyzed for finalization by benchmarking method. Subsequently, a machine model that uses a so-called quad-cliff mechanism is selected for manufacturing and testing. As a result, the proposed machine can achieve the design requirements that were set. Three pounding movements per second can be obtained by the machine, with possible increases by an engine upgrade. This machine can be considered a prototype for a semi-automatic eco-printing process by pounding technique.
An experimental approach to evaluate the stability and thermal conductivity of SiO₂/oil as green nanolubricant Anwar Ilmar Ramadhan; Tri Yuni Hendrawati; Kushendarsyah Saptaji; Efrizon Umar; Kukuh Haryadi
Mechanical Engineering for Society and Industry Vol. 6 No. 1 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.15463

Abstract

The application of nanotechnology in lubrication science has enabled the creation of nanolubricants with superior stability, improved thermal performance, and greater environmental compatibility than conventional lubricants. In this work, the stability and thermal conductivity of SiO₂ nanoparticles dispersed in base oil were experimentally examined as a green nanolubricant. SiO₂ nanoparticles were chosen owing to their chemical inertness, excellent thermal resistance, and eco-friendly nature. The nanolubricants were synthesized using a two-step method at volume concentrations of 0.1%, 0.2%, and 0.3%, with ultrasonication applied to ensure uniform particle distribution. Their stability was assessed using UV–Vis spectrophotometry, zeta potential testing, and visual sedimentation monitoring over 30 days. Thermal conductivity was determined via the transient hot-wire method. The results demonstrated that incorporating SiO₂ nanoparticles enhanced thermal conductivity by up to 12% compared to the base lubricant. Furthermore, stability evaluation showed zeta potential values of 41.2 mV, confirming strong electrostatic repulsion and low levels of agglomeration. Overall, these outcomes emphasize the promise of SiO₂-based green nanolubricants for thermal engineering applications, offering efficient and sustainable substitutes for traditional lubricants.
UAV Technology Seminar for Elementary School Teachers Rafie Djajasoepena; Patrick Lingga; Iwan Setiawan; Kushendarsyah Saptaji; Djati Wibowo; Aditiya Harjon; Ahmad Fadhil Tsani; Eko Sulistyo; Wandy Wandy
Journal of Community Services: Sustainability and Empowerment Vol. 6 No. 01 (2026): March 2026
Publisher : Center for Research and Community Service of Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/

Abstract

An Unmanned Aerial Vehicle (UAV) is commonly referred to as a drone or an aircraft with no onboard pilot. The drone technologies have been applied in many sectors such as military, hidden area exploration, medical, and many more. Purpose of this community service activities were to have elementary school teachers have basic knowledge of UAV. Initial discussions established with the teacher a month prior the seminar. Internal discussion more within the faculty members during office days and office hours through weekly offline meeting or via instant messaging service. There were 2 UAVs prepared for this seminar, and the school also already have drone for event documentation operational purposes. D-day seminar activities were only 2 hours on 27 November 2025 including preparation in the school classroom. Post-seminar activities were generating certificates for the resource persons also for all participants. The seminar has been successfully conducted with around 10 participants. Participants earned the basic knowledge about UAVs delivered by the resource person; this was essential to have both technical and non-technical information about the UAVs for teachers.
Challenges in the Implementation of Internet of Things (IoT) in Irrigation and Fertilizer Management System in Indonesia Kushendarsyah Saptaji; Azahri Tumada; Muhamad Lukman Baihaqi Alfakihuddin; Dilla Ayu Wardani; Tiara Kusuma Dewi; Octarina Adiati Junaisih; Muhamad Rausyan Fikri; Muhammad Sobirin Hendrawan Achmad
Jurnal Keteknikan Pertanian Vol. 13 No. 2 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.2.265-283

Abstract

Agriculture is critical to many countries' economies, especially related to gross domestic products (GDP) and employment. However, as a result of industrialization, leading to a problem in fulfilling the expanding global food supply demand. The Internet of Things (IoT) can enhance automatic data transfer in agricultural, improve production, increase quality, improve cost-effectiveness, and reduce environmental impact. However, the obstacles related to IoT application in agriculture have received little discussion especially in the development countries such as Indonesia. This research seeks to fill that gap by investigating the specific issues of adopting the Internet of Things (IoT) in the context of an irrigation and fertilizer management system in Indonesia. To fully study this, a stratified multistage random sampling was conducted to acquire significant insights and data. According to the interview results, respondents voiced worries regarding IoT deployment in agriculture, including, costs implementation (CI), their own knowledge (perceived knowledge (PK)), user experiences with the technology (perceived ease of use (PEU)) and intention of use (IU). The study finds weak CI-IU and PK-IU links but a strong PEU-IU correlation, underscoring the multifaceted factors influencing IoT adoption in agriculture. It is found that the easiness of the use of IoT is the main factors that influence Indonesian farmers to implement the IoT in their farmers. Although the cost of the implementation is an essential factor, easiness to use IoT is the most significant factor. Lastly, researchers, policymakers, and agricultural stakeholders can leverage these insights to advance IoT integration and sustainability in farming practices.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
Co-Authors A. Asriyanti Abdi Hanra Sebayang Abdillah, Sultansyah Reza Aditiya Harjon Ahmad Fadhil Tsani Alvika Meta Sari Anak Agung Ngurah Perwira Redi Anwar Ilmar Ramadhan Arnaz Asa Sholeh Arridina Susan Silitonga - Asep Bayu Dani Nandiyanto Asmelash Gebremariam Asriyanti, Asriyanti Azahri Tumada Azhari, Azmir Azmairit Aziz Bryan, Jonathan Budiarta, Wahyu Nur Chang, Steven Henderson Dilla Ayu Wardani Dindamilenia Choirunnisa Hardiyasanti Djati Wibowo Dyota, Arya Smara Efrizon Umar Efrizon Umar Efrizon Umar Eko Sulistyo Fernandez, Nikolas Krisma 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 Kukuh Haryadi Lanaggalih, Jarvis Eros Lubis, Steven Abed Daniel Manasikana, Dinda Arina Muchamad Oktaviandri Muchammad Fachrizal Ali Muhamad Lukman Baihaqi Alfakihuddin Muhamad Rausyan Fikri Muhamad Rausyan Fikri Muhamad Rausyan Fikri Muhammad Akhsin Muflikhun Muhammad Dadi Saputra Muhammad Satrio Utomo Muhammad Sobirin Hendrawan Achmad Muhammad, Azka Aulia Mulia, Vania Katherine Muryanti, Laely Natayu, Amartya Nikolas Krisma Hadi Fernandez Nisa Khoiriyah Nurprihatin, Filscha Octarina Adiati Junaisih Ong, Janice Patrick Lingga Priyandoko Gigih Putra, Indra Pertama Rabbani, Ariq Naufal Raffy Frandito Rafie Djajasoepena Ramadhani, Mochammad Rafli Ramadhona Saville Ramdan, Raden Dadan 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 Tiara Kusuma Dewi Tong Keong Sai Tri Yuni Hendrawati Triawan, Farid Trisnadewi, Titin Tumada, Azhari Wandy Wandy Weandri, Aliffa Ratumahesa Wibowo, Djati Widianingrum, Sinta Wong, Miguel Silvano Hermawan Yheni Mulyaningsih Yuli Panca Asmara