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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.
PELATIHAN PENERAPAN PANEL SURYA SEBAGAI PEMBANGKIT LISTRIK TENAGA SURYA MENDUKUNG PROGRAM HEMAT ENERGI DI SMP MUHAMMADIYAH 3 MEDAN Abdullah, Abdullah; Susan Silitonga, Arridina; Haq, Moh. Zainul; Putri, Maharani; Cholish, Cholish; Yusof, Nor Aizam bt Muhamed Yusof; Azhari, Syahdika Kurnia; Hutauruk, Pius Fernando Hendra; Ratama, Raka
Bestari: Jurnal Pengabdian Kepada Masyarakat Vol 4 No 3 (2024)
Publisher : Sekolah Tinggi Keguruan dan Ilmu Pendidikan (STKIP) Melawi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46368/dpkm.v4i3.2765

Abstract

Kebutuhan akan energi listrik yang terus meningkat di Indonesia menuntut adanya solusi inovatif yang ramah lingkungan, salah satunya adalah dengan memanfaatkan energi surya. Kegiatan pengabdian Thematic Community Service Collaboration (TCSC) bertujuan untuk memberikan pelatihan penggunaan panel surya sebagai pembangkit listrik tenaga surya di Sekolah SMP Muhammadiyah 3 Medan dengan fokus kepada perancangan PLTS sederhana  sebagai pelatihan penerapan teknologi tepat guna dengan skala pembelajaran. Metode yang digunakan dalam Pengabdian ini yaitu metode ceramah dilanjutkan dengan metode diskusi dan tanya jawab dilanjutkan dengan metode demonstrasi alat beserta cara kerjanya dan metode interaksi langsung yaitu siswa dan guru dapat mencoba atau mempraktikkan secara langsung. Kegiatan Pengabdian ini memiliki tahapan kerja, dimulai tahap melakukan survei sampai tahap evalusi agar kegiatan Pengabdian sesuai target, yaitu menambah pengetahuan, ketrampilan dan kreatifitas guru dan siswa terhadap perkembangan teknologi berupa penerapan panel surya sebagai pembangkit listrik tenaga surya dalam mendukung program hemat energi.
The Utilization of a Combination of Heatsink Material And A Water Cooler Block As An Effort To Reduce Heat From Solar Panels Abdullah; Putri, Maharani; Syahruddin, M.; Silitonga, Arridina Susan; Dharma, Surya; Jumaat, Abdul Kadir; Ridzuan, Abdul Rahim; Aritonang, Gideon
International Journal of Applied Research and Sustainable Sciences Vol. 2 No. 5 (2024): May 2024
Publisher : MultiTech Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59890/ijarss.v2i5.1806

Abstract

Solar panels are an important utilization in generating renewable energy, but high temperatures can reduce energy conversion efficiency and shorten the lifetime of solar panels. This research aims to explore and evaluate the utilization of a combination of heatsink material and cooling water block as a solution to reduce the heat generated by solar panels. The research method includes the design and manufacture of a prototype consisting of solar panels mounted on a combination of heatsink material and water block. Experiments were conducted by varying the use of passive cooling and the absence of cooling on solar panels according to environmental conditions to evaluate the effectiveness of the system in reducing the temperature of solar panels. A power increase of 43.3% was achieved by comparing the system without cooling design with the passive cooling design system. The results showed that the use of a combination of heatsink material and cooling water block significantly reduced the solar panel temperature under various operational conditions. In addition, data analysis showed an increase in the energy conversion efficiency of the solar panel after the implementation of the cooling system. This research makes an important contribution to the development of more efficient and durable solar panel technology by addressing the problem of heat generation.
Two Decades of Biodiesel Research from Waste Cooking Oil: A Bibliometric and Literature Review of Heterogeneous Catalysts Suherman, Suherman; Muharnif, Muharnif; Abdullah, Ilmi; Silitonga, Arridina Susan; Yusfiani, Marnida; Hamzah, Wan Azmi Wan
Automotive Experiences Vol 8 No 3 (2025)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.14776

Abstract

Waste cooking oil (WCO) represents an abundant yet underutilised feedstock for biodiesel production, constrained primarily by challenges related to catalyst performance and recyclability. Conventional homogeneous catalysts, such as sodium hydroxide (NaOH) and potassium hydroxide (KOH), often suffer from deactivation after several reuse cycles due to leaching and sensitivity to impurities. In contrast, heterogeneous catalysts, including calcium oxide (CaO) and biomass-derived materials, offer promising, reusable, and environmentally benign alternatives for WCO-based biodiesel synthesis. This study presents a comprehensive bibliometric and literature review examining global research trends in biodiesel production from WCO using heterogeneous catalysts. As environmental concerns and fossil fuel depletion intensify, biodiesel has gained increasing attention as a sustainable and renewable energy substitute. A total of 974 publications indexed in the Scopus database between 2006 and June 2024 were systematically analysed to identify key research trends, influential authors, geographical distribution, and thematic clusters. Data retrieved from the Scopus database were exported in RIS format and subsequently processed using VOSviewer for bibliometric visualisation. Keyword analysis revealed dominant clusters around “WCO biodiesel” and “heterogeneous catalysts”, encompassing research topics such as transesterification, oxidation stability, performance optimisation, and corrosion behaviour. The bibliometric mapping highlights strong interconnections among research themes, particularly those associated with catalysts, transesterification mechanisms, engine performance, and emission reduction. The literature review further evaluates various types of heterogeneous catalysts including CaO, biochar, and metal- and biomass-based catalysts focusing on their synthesis routes, physicochemical properties, and optimal operating conditions. Research productivity on WCO biodiesel peaked during 2020–2021 but declined after 2022, suggesting research saturation or shifting interest toward emerging renewable technologies. Co-country analysis identified India and Malaysia as leading contributors, while Tabatabaei et al. and Bae et al. were the most prolific authors. This study offers a holistic overview of research progress and future directions, providing valuable insights for advancing cleaner, more efficient, and sustainable biodiesel production technologies.