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All Journal Jurnal Dedikasi Geo Media: Majalah Ilmiah dan Informasi Kegeografian JURNAL SISTEM INFORMASI BISNIS Jurnal Pendidikan Geografi Undiksha Journal of Tropical Soils Jurnal Simetris SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal Transformatika Media Mesin: Majalah Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal JPG (Jurnal Pendidikan Geografi) Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat BAREKENG: Jurnal Ilmu Matematika dan Terapan JURNAL PENDIDIKAN TAMBUSAI Abdimasku : Jurnal Pengabdian Masyarakat Academia Open JPM: JURNAL PENGABDIAN MASYARAKAT Jurnal Mesin Nusantara Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya Tematik Journal Of Engineering Sciences (Improsci) Jurnal Alat Berat Jurnal Pengabdian Masyarakat Teknologi dan Pendidikan (MANTAP) Sainstech Nusantara Geosfera Indonesia Jurnal DIMASTIK
Edi Widodo, Edi
Magister Sistem Informasi Universitas Diponegoro
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Pengaruh Variasi Komposisi Serbuk Kulit Jagung, Kuningan, dan Aluminium terhadap Kekerasan dan Ketangguhan Komposit Kampas Rem Non-Asbes Tjahjanti, Prantasi Harmi; Widodo, Edi; Mauliana, Metatia Intan; Darmawan, Candra
Jurnal Mesin Nusantara Vol 8 No 2 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i2.25242

Abstract

Kampas rem non-asbes diperlukan sebagai alternatif yang aman dan ramah lingkungan untuk menggantikan kampas rem berbahan asbes. Penelitian ini bertujuan menganalisis pengaruh variasi komposisi serbuk kulit jagung, serbuk kuningan, dan serbuk aluminium terhadap kekerasan dan ketangguhan komposit kampas rem. Tiga variasi komposisi disiapkan dengan perubahan fraksi serat kulit jagung sebesar 50%, 40%, dan 30%, sementara fraksi logam ditingkatkan secara proporsional. Pengujian meliputi uji kekerasan Shore D dan uji impak Charpy. Hasil menunjukkan bahwa peningkatan kandungan logam meningkatkan kekerasan komposit dari 62 menjadi 78 Shore D, sedangkan penurunan kandungan kulit jagung menurunkan energi impak dari 12,57 J menjadi 6,98 J. Komposisi 50% kulit jagung, 25% kuningan, dan 25% aluminium memberikan keseimbangan paling optimal antara kekerasan dan ketangguhan. Komposit ini dinilai potensial sebagai material kampas rem non-asbes yang aman dan memiliki performa mekanik memadai.
Analysis of The Design of Thickness Variations of Pressure Cooker Equipment Using A Strainer Muqaffi, Alfan Dabbar; Harmi Tjahjanti, Prantasi; Widodo, Edi
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.1036

Abstract

Background. In micro, small, and medium enterprises (MSMEs) that make pressure milkfish, the majority still use manual pressure cookers, with the pressure showing that the milkfish is cracked, making it less attractive in terms of performance and appearance. Aims. Therefore, the purpose of this research is to design a presto milkfish pot equipped with a filter. The design uses AutoCAD for 2D drawings and SolidWorks software 2023 for 3D. The results obtained have been used to design pressure-cooker equipment with a filter. Methods. The results of the design of pressure cooker equipment using filters with varying pan thicknesses are for Von Mises stress, displacement (shift)/elongation, strain/strain, and Safety Factor (SF). Result. The analysis of all design results was obtained: (a). The results of the Von Mises stress simulation, with varying pressure cooker thickness, show that the wall thickness is directly proportional to the maximum Von Mises stress. So the wall of the pressure cooker with the greatest thickness (3mm) has the maximum voltage value of Von Mises, also the greatest (978.0 MPa), (b).  The results of the pressure cooker elongation/displacement simulation with varying pressure cooker thickness showed that thickness variation was not significant for elongation/displacement. The average elongation/displacement is 0.008468 mm; the result is quite small, indicating that the thickness of the pan is not related to the elongation of the pressure cooker material at a break or a certain limit (c). The results of the pressure cooker strain simulation with the pressure cooker thickness variation, with a value of 0.004613, indicate that the pressure cooker thickness variation is not significant to the pressure cooker strain, because the strain obtained does not cause a change in the shape of the pressure cooker equipment, even though the pressure cooker wall has a different thickness Conclusion. Safety Factor simulation results/ Factor of Safety (FS) pressure cookers with pressure cooker thickness variations it appears that for the pressure cooker thickness variation, all have an acceptable FS, because the value exceeds the value of 1.
Implementasi Internet of Things dalam Optimalisasi Pengolahan Limbah Tekstil Pada Kelompok Pemberdayaan Kesejahteraan Keluarga Mauliana, Metatia Intan; Indahyanti, Uce; Widodo, Edi
JPM: Jurnal Pengabdian Masyarakat Vol. 6 No. 3 (2026): January 2026
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/jpm.v6i3.2810

Abstract

The problem of waste, particularly textile waste, continues to increase in line with the growing trend of fast fashion and the lack of effective household waste management. Larangan Village, located in Candi Subdistrict, Sidoarjo, has great potential to develop a community-based waste management system through the active role of the PKK Larangan Mega Asri Women’s Group. This community service program aims to improve literacy, skills, and management of textile waste processing integrated with Internet of Things (IOT)-based technology. The implementation methods include socialization, skills training, technical assistance, monitoring, and evaluation of partner competency improvement. Based on the results of questionnaires completed by training participants, the textile waste processing training activities had a positive impact on improving participants’ knowledge, skills, and motivation. Each indicator aspect showed satisfactory results: knowledge (average score 4.60), skills (4.36), attitude, motivation, and sustainability (4.67), as well as program relevance and usefulness (4.70) on a five-point scale, with an overall average score of 4.56 or 91.20%. In addition, the application of technology through the “KLAMBIKU” IOT-based donation box innovation has strengthened the textile waste management system to become more efficient, integrated, and user-friendly. This technology enables real-time monitoring of box conditions, digital storage of donation data, and the provision of information on nearby donation locations to the community. Overall, this program demonstrates that the combination of skill-based education and the application of appropriate technology can serve as an innovative solution for community-based textile waste management.
Measuring Geography Online Learning in The First Year Using The Online Learning Quality Index Based on Teachers and Learners’ Perceptions (OLQ-TLP) Yulianto, Agung; Mukminan; Oktavianto, Dwi Angga; Widodo, Edi; Ramos, Angelou O.
Geosfera Indonesia Vol. 9 No. 3 (2024): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v9i3.43337

Abstract

Online learning is a relatively new thing for some teachers in South Kalimantan. It was the first time for these teachers to do online learning since the government took the policy of learning from home due to the disaster emergencies and environmental change. This study aims (1) to determine the perception of geography teachers in South Kalimantan who have just done online learning for the first time, and (2) to determine the quality of online learning that has been implemented based on the mean index value of each factor. The research was designed with a quantitative approach through an online survey of 26 geography teachers who teach 10th grade at the high school level. The sample was selected by Cluster Random Sampling. The questionnaire instrument used a modified the online learning quality index based on teachers and learners’ perceptions (OLQ-TLP). The research time was from December 2020 to February 2021. The results showed that teachers' perceptions of online learning were in a good category. Based on the index value, factors that have good quality are Learner content, Learner interaction, Instruction interaction, Social Presence, and Course design. Other factors still need to be improved, namely the factors of Learner satisfaction, Knowledge acquisition, Learning platform, Instruction, Learning support, and Ability of transfer. Therefore, to improve teachers' expertise in online geography learning on lithosphere material, training with an innovative Digital Education Shifting (DES) approach is needed.
Computer-Aided Design (CAD) Training for Appropriate Technology (TTG) to Enhance the Competence of Vocational High School Students in East Java Mulyadi; Widodo, Edi; Fahruddin, A'rasy; Ahfas, Akhmad
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 10 No. 2 (2025): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v10i2.22448

Abstract

This community service programme aimed to enhance the competencies of vocational high school students in East Java through Computer-Aided Design (CAD) training for Appropriate Technology (AT). Held on 13 June 2025 at the Mechanical Engineering Study Programme, Universitas Muhammadiyah Sidoarjo (Umsida), the activity was part of the Institutional Community Service Grant initiative. A total of 20 students from four partner schools participated, with each school sending five representatives. The training focused on developing students’ technical skills in designing AT products using CAD software and simulating basic fluid mechanics relevant to product development. Expert instructors, certified by the National Professional Certification Board (BNSP), delivered hands-on sessions to ensure strong practical learning outcomes. The results showed significant improvements in students’ technical abilities in CAD-based product design, a better understanding of engineering concepts, and greater readiness to apply these skills in industry-related contexts. This programme represents a strategic effort to bridge the gap between vocational school graduates’ competencies and industry demands, while also fostering innovation and the potential for technology-based entrepreneurship.
Design and Structural Analysis of Meatball Printing Machine with Arduino Uno-Based Security System for Operator Protection Ramadhan, Bayu Surya; Widodo, Edi; Fahruddin, A'rasy; Mulyadi
SAINSTECH NUSANTARA Vol. 2 No. 4 (2025): November 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i4.119

Abstract

This study presents the design and structural verification of a compact meatball-forming machine that integrates an Arduino Uno–based operator protection system. A redesigned 500×500×1011 mm frame made of 20×20×1.5 mm hollow steel was modeled in SolidWorks 2024 and evaluated using finite element analysis (von Mises stress, displacement, strain, and safety factor) under an applied load representing a 30 kg operating condition. To reduce assembly complexity, two alternative concepts were assessed using Design for Assembly (DFA), and the most efficient configuration was selected for detailed development. The safety subsystem employs an HC-SR04 ultrasonic sensor facing the operator zone; when the detected distance falls below 10 cm, the controller triggers a warning indicator and enables protective control actions. The final concept achieved higher DFA efficiency (18%) than the initial concept (16%) while reducing material use and overall footprint. Structural simulations indicate a peak von Mises stress of 163.6 MPa, below the 250 MPa yield strength of ASTM A36 steel, a maximum displacement of 1.002 mm, and a minimum safety factor of 1.528, confirming adequate stiffness and margin against yielding. The proposed design combines adjustable forming via an iris mechanism with servo-driven cutting to improve process consistency while embedding real-time proximity sensing to enhance occupational safety.
Tensile and Compressive Behavior of Sansevieria Fiber Composites: Perilaku Tarik dan Tekan Komposit Serat Sansevieria Al-Amin , Achmad Nurfadil; Widodo, Edi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2039

Abstract

General Background: Natural fiber reinforced composites have gained attention in mechanical engineering due to their lightweight characteristics and sustainable material potential. Specific Background: Sansevieria fiber combined with polyester resin and alkali treatment has demonstrated promising mechanical properties; however, limited studies evaluate the addition of amylum starch concentration within the matrix system. Knowledge Gap: There remains insufficient experimental evidence regarding how varying amylum manihot concentrations modify tensile and compressive responses of Sansevieria fiber reinforced composites. Aims: This study investigates tensile strength and compressive strength of alkali-treated Sansevieria fiber composites with 6%, 7%, 8%, 9%, and 10% amylum starch addition using ASTM D-638 and ASTM D-695 standards. Results: Experimental findings indicate that starch addition increases tensile strength, with the highest tensile stress of 35.53 MPa at 8% concentration, while compressive strength decreases, with the highest compressive stress of 108.27 MPa observed in specimens without starch addition. Novelty: The research presents a systematic comparison of dual mechanical properties under controlled starch concentration variations in polyester-based Sansevieria composites. Implications: The findings provide reference data for optimizing composition design in natural fiber reinforced composite applications requiring tailored tensile and compressive performance. Keywords: Natural Fiber Composite, Sansevieria Fiber, Amylum Starch, Tensile Strength, Compressive Strength Key Findings Highlights Maximum tensile stress recorded at 8% starch concentration. Highest compressive stress obtained in specimens without additive. Alkali-treated fiber composites show contrasting mechanical trends.
Measuring Geography Online Learning in The First Year Using The Online Learning Quality Index Based on Teachers and Learners’ Perceptions (OLQ-TLP) Yulianto, Agung; Mukminan; Oktavianto, Dwi Angga; Widodo, Edi; Ramos, Angelou O.
Geosfera Indonesia Vol. 9 No. 3 (2024): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v9i3.43337

Abstract

Online learning is a relatively new thing for some teachers in South Kalimantan. It was the first time for these teachers to do online learning since the government took the policy of learning from home due to the disaster emergencies and environmental change. This study aims (1) to determine the perception of geography teachers in South Kalimantan who have just done online learning for the first time, and (2) to determine the quality of online learning that has been implemented based on the mean index value of each factor. The research was designed with a quantitative approach through an online survey of 26 geography teachers who teach 10th grade at the high school level. The sample was selected by Cluster Random Sampling. The questionnaire instrument used a modified the online learning quality index based on teachers and learners’ perceptions (OLQ-TLP). The research time was from December 2020 to February 2021. The results showed that teachers' perceptions of online learning were in a good category. Based on the index value, factors that have good quality are Learner content, Learner interaction, Instruction interaction, Social Presence, and Course design. Other factors still need to be improved, namely the factors of Learner satisfaction, Knowledge acquisition, Learning platform, Instruction, Learning support, and Ability of transfer. Therefore, to improve teachers' expertise in online geography learning on lithosphere material, training with an innovative Digital Education Shifting (DES) approach is needed.
Co-Authors Agung Yulianto Agus Susilo Nugroho Agusta Praba Ristadi Pinem Ahmad Ahfas Akbar, Syaeful Akhmad, Afandi Al-Amin , Achmad Nurfadil Alamsyah, Erika Ali Akbar Ananto, Ami Dwi Andri Triyono Angga, Pratama Ansori, Faisal April Firman Daru Arbiantara, Difta Arum, Dhika Malita Puspita A’rasy Fahruddin Bambang Syaeful Hadi Basri Basri Boy Isma Putra Candra Darmawan, Candra Chilmi, Muchammad Dessy Wardiah, Dessy Dhika Malita Dwi Angga Oktavianto Efendi, Moch Miqdar Eko Supriyadi Fahruddin, A'rasy Fathoni, Muhammad Rizal Febriyanto, Eko Wahyu Hadi, Soiful Hanif, Muhammad Burhan Harapan, Edi Hastuti Hastuti Hastuti Himam, Muhammad Tauhid Ibnu Widiyanto Indah Sulistiyowati iswanto Iswanto Iswanto Kartika Imam Santoso Khoirunnisa, Safira Kristanto, Arnes Budi Kristianto, Denny Kurniawan, Teguh Tri Martiana, Aris Maulana, Achmad Bagas Mauliana, Metatia Intan Ma’arif, Daffa Nurin Nabil Muhsinatun Siasah Masruri Mukminan MULYADI Muqaffi, Alfan Dabbar Mustafid Mustafid Nursida Arif Nurtriana Hidayati Pamungkas, Wahyu Aji Prantasi Harmi Tjahjanti Pratama Angga Buana Prind Triajeng Pungkasanti, Prind Triajeng Priyambudi, Gagah Deffi Putro, Eko Prasetio Rachmawati, Eka Putri Ramadhan, Bayu Surya Ramadhani, Aditya Ramos, Angelou O. Rastri Prathivi Riantika, Rasti Fajar Peni Rifa'atussa'adah, Nahida Rofiq Salam, Rois Nur Setiawan, Luthfi Frans Siti Irene Astuti D Sri Rum Giyarsih Sulis Yulianto Surjati, Endang Susanto Susanto Syahruddin Syahruddin Titin Winarti Uce Indahyanti Wardani, Kasa Kusuma Wawan Setiawan Windarta, Windarta Zanyc, Yuinta Diaz Aprilia