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All Journal Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat METALOGRAM
Adriansyah, Muhamad
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Public Health

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Pelatihan Pembuatan Pupuk Organik Cair dari Limbah Kulit Kopi di Desa Pakis Jember Amini, Helda Wika; Rizkiana, Meta Fitri; Palupi, Bekti; Hidayati, Nurul; Raharjo, Sonya Hakim; Nurani, Yukti; Aziz, Mohamad Naufal Nizaar; Saputri, Ocha; Permatasari, Intan; Fandora, Ardan Jauza; Adriansyah, Muhamad; Nurjannah, Lailia; Rachman, Darryl Akeyla; Firmansyah, Alex; Devara, Arighy Zahirah Faiqy; Ulfiani, Khoirun Nisya'
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 1 (2025): Community Empowerment through Higher Education Community Service Programs
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i1.583

Abstract

Indonesia is one of the largest coffee-producing countries in the world. Indonesia recorded a large coffee harvest capacity reaching 774.96 thousand tons in 2022. The coffee processing naturally results in coffee hull waste that continues to be produced in large quantities. About 40 to 48% of the coffee hull composition contained in a coffee cherry is often discarded during processing and is not optimally utilized. One sustainable solution that can be implemented is processing coffee hull waste into liquid organic fertilizer (POC) through fermentation with EM4. This community service program was implemented in Pakis Village, Panti District, Jember Regency, which has 441.40 hectares of coffee plantations with an annual production of around 1,200 tons of robusta coffee. The program includes bioreactor development, socialization, and training for the community regarding the processing of coffee hull waste into POC. The result is increased community knowledge and skills as well as economic benefits for coffee farmers in Pakis Village through improved soil productivity. The results of the activities showed that the clarity of the knowledge with community needs increased to 70%, public interest in POC activities increased to 85%, and resulted in public satisfaction of 95%.
Analyis Of Gear Strenght In Machine Construction amiko, amiko; Pratama, Yuki Alvandi; Gusman, Beny; Adriansyah, Muhamad; Hasibuan, Fardin; Efiano, Eddy
METALOGRAM Metalogram Vol.2 No.2 (April, 2026)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v2i2.7457

Abstract

Gears are essential components in mechanical transmission systems, responsible for transferring power between shafts in various types of machinery. The strength of gears plays a critical role in the efficiency and reliability of these systems, as improper load handling can lead to material failure or gear damage. This study aims to analyze the strength of gears by considering several factors such as material properties, geometry, and operational conditions. The materials tested in this research include carbon steel SAE 1045, alloy steel SAE 4140, and stainless steel (SS 304), all of which are commonly used in gear applications. The gear geometry analyzed includes variations in module (2 mm and 3 mm), the number of teeth (20 teeth), and the pressure angle (20 degrees). The research methodology includes Finite Element Analysis (FEA) to simulate stress distribution on gears under both dynamic and static loading conditions, along with experimental testing to validate the simulation results. The results show that SAE 4140 alloy steel exhibits superior tensile strength and wear resistance compared to SAE 1045 carbon steel, though at a higher cost. Stainless steel (SS 304) offers excellent corrosion resistance but lower tensile strength, making it less suitable for high-load applications. Additionally, increasing the gear size (3 mm module) reduces stress on the teeth but increases the overall size and weight of the gear. This study provides important insights into material selection and gear design, helping to improve the strength and durability of mechanical transmission systems.
Co-Authors amiko, amiko Aziz, Mohamad Naufal Nizaar Bekti Palupi Devara, Arighy Zahirah Faiqy Efiano, Eddy Fandora, Ardan Jauza Fardin Hasibuan Firmansyah, Alex Gusman, Beny Helda Wika Amini Intan Permatasari Meta Fitri Rizkiana Nurani, Yukti Nurjannah, Lailia Nurul Hidayati pratama, yuki alvandi Rachman, Darryl Akeyla Saputri, Ocha Sonya Hakim Raharjo Ulfiani, Khoirun Nisya'