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All Journal Jurnal Pendidikan Teknik Mesin REKAYASA Jurnal Mechanical Jurnal Teknik Otomotif Kajian Keilmuan dan Pengajaran Turbo : Jurnal Program Studi Teknik Mesin JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Pengabdian, Pendidikan dan Teknologi Jurnal Graha Pengabdian Indonesian Journal of Industrial Engineering & Management Jurnal Abdimas Indonesia : Jurnal Abdimas Indonesia Journal of Indonesian Society Empowerment AMMA : Jurnal Pengabdian Masyarakat IRA Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)
Didin Zakariya Lubis
Universitas Negeri Malang
Religion Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Other

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PENERAPAN TEKNOLOGI PORTABLE PLASTIC PYROLYSIS REACTOR MACHINE (P3RM) UNTUK MENINGKATKAN EFISIENSI PROSES DAUR ULANG SAMPAH PLASTIK MENJADI BBM DI DESA JATIREJOYOSO, KEPANJEN, KABUPATEN MALANG Erwin Komara Mindarta; Didin Zakariya Lubis; Dani Irawan; Taupik Yuhana; Yudha Rian Pratama
Jurnal Abdimas Indonesia Vol. 3 No. 4 (2023): Oktober-Desember 2023
Publisher : Perkumpulan Dosen Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53769/jai.v3i4.556

Abstract

Pengolahan sampah masih menjadi persoalan kita saat ini. Di Desa Jatirejoyoso, pengolahan sampah pun masih dilakukan secara manual dengan dikumpulkan, dipilah dan hanya dibakar. Namun dengan dibakarnya sampah ini menimbulkan polusi udara. Tim pelaksana pengabdian kepada masyarakat dari Jurusan Teknik Mesin Universitas Negeri Malang (UM) menjawab kebutuhan mitra, dengan memberikan solusi berupa teknologi Portable Plastic Pyrolysis Reactor Machine (P3RM). Untuk mencapai tujuan pengabdian ini langkah-langkah berikut ini dilakukan: 1) survey lokasi, 2) pendekatan sosial, 3) pengembangan produk (tahapan pekerjaan dalam bidang produksi), dan 4) penyusunan panduan/program. Sementara tahapan pekerjaan yang perlu diikuti pada bagian pelaksanaan adalah sebagai berikut: 5) penerapan ipteks/TTG melalui kegiatan sosialisasi, introduksi alat/TTG dan pelatihan; 6) tindak lanjut pasca-kegiatan sosialisasi, introduksi alat dan pelatihan melalui percontohan, dan pendampingan; 7) monev: presentasi kemajuan dan laporan akhir; dan 8) memenuhi kewajiban luaran. Mesin ini memiliki manfaat: 1) mengurangi polusi dan limbah plastik, 2) memberi alternatif bahan bakar yang dapat digunakan.
PELATIHAN PENGELOLAAN SAMPAH RUMAH TANGGA DI LINGKUNGAN PKK RT. 27/RW. 03 PERUMAHAN PAKIS HASANAH MALANG Tsamroh, Dewi Izzatus; Nurmalasari, Riana; Lubis, Didin Zakariya; Maulana, Jibril; Sasongko, Muhammad Ilman Nur; Riyanto, Obaja Eden Sentosa; Andrianto, Sis Nanda Kus
Jurnal Graha Pengabdian Vol 7, No 1 (2025): MARET
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um078v7i12025p%p

Abstract

Perumahan Pakis Hasanah Malang merupakan kawasan hunian baru dengan lebih dari 100 kepala keluarga (KK). Namun, pengelolaan sampah di lingkungan ini masih menghadapi kendala, terutama dalam frekuensi pengambilan sampah yang hanya dilakukan dua kali seminggu. Akibatnya, terjadi penumpukan sampah pada hari-hari tertentu yang berpotensi menimbulkan permasalahan lingkungan dan kesehatan. Selain itu, sampah rumah tangga di wilayah ini belum dipilah berdasarkan jenisnya, sehingga peluang untuk pengelolaan yang lebih berkelanjutan belum dimanfaatkan secara optimal. Oleh karena itu, kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan dan keterampilan ibu-ibu PKK RT.27/RW.03 dalam memilah serta mengelola sampah rumah tangga melalui edukasi dan pelatihan pembuatan eco-enzyme. Metode yang digunakan dalam kegiatan ini meliputi sosialisasi mengenai pentingnya pemilahan sampah dan pelatihan praktik pembuatan eco-enzyme sebagai salah satu solusi pengelolaan limbah organik. Hasil kegiatan menunjukkan adanya peningkatan pengetahuan dan kesadaran peserta terkait pentingnya pemilahan sampah serta manfaat eco-enzyme dalam kehidupan sehari-hari. Dengan adanya kegiatan ini, diharapkan masyarakat dapat menerapkan konsep pengelolaan sampah yang lebih baik dan berkontribusi dalam menciptakan lingkungan yang bersih dan sehat
Hardness enhancement of Al-Si alloys from sand casting with runner variations Tsamroh, Dewi Izzatus; Ardiansyah, Mochammad Fachrizal; Yaqin, Mohammad Ainul; Shiddiqy, Taqiyyudin Ahmad As; Lubis, Didin Zakariya
JURNAL MECHANICAL Vol 15 No 2 (2024): JURNAL MECHANICAL
Publisher : Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v15i2.5280

Abstract

Metal casting is one of the oldest and most efficient manufacturing techniques in producing metal components with complex shapes. One of the main challenges in the casting process is controlling the flow of molten metal so that it can fill the mold perfectly without producing defects. The channel in the casting mold is usually called a runner. The runner functions as a distribution channel for molten metal into the mold cavity. Optimal runner design settings are very important to prevent defects in the final product such as porosity, cold shut, and shrinkage. This study aims to identify the effect of runner shape variations on the quality of Al-Si casting. The method used in this study is a laboratory experimental method. The study began with preparing the tools and materials, the materials used in this study were used pistons. The piston melting temperature was carried out at 750°C. The results showed that the results of the cast product using a truncated cone-shaped runner (variation 1) were the best results. Macrostructural analysis showed that specimens in variation 1 had minimum casting defects and lower shrinkage compared to variation 2. Microstructural analysis showed that the cast product produced several phases. Meanwhile, the hardness number for specimen variation 1 reached 98 HRE.
IN-DEPTH INVESTIGATION OF VARIATIONS IN RISER QUANTITY USING EXPENDABLE MOLDS Riyanto, Obaja Eden Sentosa; J, Khansa Farrel; I.Y.H, Kyagus Ahmad; E., Wahyu Dwi; Akbar, Rafi; Lubis, Didin Zakariya
Jurnal Dinamika Vokasional Teknik Mesin Vol. 9 No. 2 (2024)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v9i2.77336

Abstract

This study explores and investigates the impact of the riser quantity on shrinkage and surface quality of two cast products in the sandcasting process.  The research was conducted in several stages: preparing the mold and equipment, performing the casting process, investigating shrinkage, and inspecting the products using a macro camera. Experimental results demonstrated that the number of risers significantly influences the final product quality. Specifically, the average shrinkage for molds with one riser was found to be 3.18% and 5.01% for the first and second products, respectively. In comparison to molds with two risers presented decreased shrinkage, with averages of 0.9% and 2.06% for the first and second product, respectively. Additionally, defects investigated and observed in the first product with a single riser mold underscore the importance of riser quantity alongside casting parameters. The findings of this research highlight that increasing the number of risers can enhance casting quality by minimizing shrinkage. improving surface finish. This research presented essential insights for optimizing riser design and quantity for expendable mold in sandcasting technology to achieve superior cast products quality.
QUANTITATIVE MACRO DEFECT ANALYSIS IN SAND CASTING: 3D SIMULATION AND POROSITY ASSESSMENT IN ASHTRAY PATTERNS Maulana, Jibril; Adjie P.W, Muhammad; M.H, Rachmanda; Aliyudin F, Rifan; Maulana, Yusuf; Lubis, Didin Zakariya
Jurnal Dinamika Vokasional Teknik Mesin Vol. 9 No. 2 (2024)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v9i2.77486

Abstract

Simulation analysis and quantitative approaches have become very important in the foundry industry to improve product quality and minimize defects. This study aims to analyze macro defects, particularly porosity, in ashtray patterns produced through sand casting. A quantitative approach was used to identify and evaluate macro defects in the castings by utilizing 3D simulation techniques. This process involves taking macro images of the molded samples and then processing them to determine the porosity level. The porosity evaluation was carried out by comparing the simulation results with experimental data, thus enabling a more in-depth understanding of the factors affecting casting quality. The results of this study show the porosity formed by 3-dimensional simulation and the porosity percentage derived from statistical interpretation of macro photographs of sand casting materials. The findings are expected to make a meaningful contribution to the foundry industry, particularly in the effort to improve product quality through process optimization. This study also highlights the importance of quantitative and simulation approaches in analyzing and predicting casting defects, which can ultimately reduce production costs and improve product yield.
Simple Engineering-Based Cardboard Game Media to Support Contextual Learning at Al-Ya'lu Elementary School, Malang. Maulana, Jibril; Riyanto, Obaja Eden Sentosa; Sasongko, Muhammad Ilman Nur; Andrianto, Sis Nanda Kus; Lubis, Didin Zakariya
Journal of Indonesian Society Empowerment Vol. 3 No. 2 (2025): December
Publisher : Yayasan Lentera Avanya Nagari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61105/jise.v3i2.264

Abstract

Educational games have been widely recognized as effective instructional tools that enhance students’ motivation and engagement in learning. This community engagement program aims to strengthen contextual learning for fourth- and fifth-grade students at SD Unggulan Al-Ya’lu through the development and implementation of simple engineering-based cardboard game media. The initiative addresses the school’s demand for practical and engaging teaching aids that connect abstract scientific concepts—such as force, motion, and simple mechanisms—with real-world phenomena. A problem-solving approach was employed, consisting of four key phases: preparation, program socialization, counseling, and hands-on training. During the implementation, students were guided to design and construct low-cost educational games made from recycled cardboard, including hydraulic claw machines and simple vending machines. The impact of the program was evaluated through pre-test and post-test assessments to measure students’ conceptual understanding. The results indicated a significant improvement in comprehension scores, increasing from an average of 64.36 to 87.05. This outcome reflects enhanced cognitive skills and a deeper understanding of basic mechanical concepts. Furthermore, the activity fostered collaboration, creativity, and active participation. These findings demonstrate that simple, low-cost engineering projects can serve as effective contextual learning media and provide sustainable pedagogical strategies for elementary education. Permainan edukatif telah terbukti dapat digunakan sebagai media pembelajaran yang efektif dalam meningkatkan motivasi dan keterlibatan peserta didik. Program pengabdian masyarakat ini bertujuan untuk memperkuat pembelajaran kontekstual bagi siswa kelas IV dan V di SD Unggulan Al-Ya’lu melalui pengembangan dan penerapan media permainan kardus berbasis rekayasa sederhana. Inisiatif ini dilatarbelakangi oleh kebutuhan sekolah terhadap media pembelajaran yang praktis dan menarik guna menjembatani konsep-konsep sains dasar—seperti gaya, gerak, dan mekanisme sederhana—dengan fenomena nyata di lingkungan sekitar. Pendekatan pemecahan masalah digunakan melalui empat tahapan utama, yaitu persiapan, sosialisasi program, penyuluhan, dan pelatihan praktik. Dalam pelaksanaannya, siswa dilatih untuk merancang dan membuat permainan edukatif berbiaya rendah dari kardus bekas, seperti mesin capit hidrolik dan mesin penjual sederhana. Dampak kegiatan dievaluasi melalui pre-test dan post-test untuk mengukur peningkatan pemahaman konsep siswa. Hasil menunjukkan peningkatan signifikan dari skor rata-rata 64,36 menjadi 87,05, yang mencerminkan peningkatan kemampuan kognitif dan pemahaman terhadap konsep mekanika dasar. Selain itu, kegiatan ini juga mendorong kolaborasi, kreativitas, serta partisipasi aktif siswa. Temuan ini menegaskan bahwa proyek rekayasa sederhana berbiaya rendah dapat menjadi media pembelajaran kontekstual yang efektif serta mendukung strategi pedagogis berkelanjutan di pendidikan dasar.
Comparative Analysis of Cost and Performance of Plastic Shredder Machines Using Heatmap-Based Scoring Maulana, Jibril; Tsamroh, Dewi 'Izzatus; Riyanto, Obaja Eden Sentosa; Widowati, Tamara Rahma; Sasongko, Muhammad Ilman Nur; Adrianto, Sis Nanda Kus; Lubis, Didin Zakariya
IJIEM - Indonesian Journal of Industrial Engineering and Management Vol 7, No 1: February 2026
Publisher : Program Pascasarjana Magister Teknik Industri Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijiem.v7i1.33929

Abstract

The growing problem of plastic waste requires innovative and sustainable solutions in terms of processing and recycling. One of the key technologies in the recycling process is the shredder machine, which serves to shred plastic waste into smaller sizes before further processing. However, in practice, industry players, especially at the microscale, often face a dilemma in choosing the optimal shredder machine between performance and cost aspects. This research aims to fill the gap by conducting a comparative analysis of three shredder designs based on price and technical performance criteria. The method used in this research involves quantitative measurements of vary in several key aspects, namely: physical dimensions (body area), frame length, transmission system (gearbox and/or clutch), storage capacity, chopper type, motor specifications (power), speed controller, additional features such as presser, foldability, and total price. Furthermore, the data was analyzed using a simple machine learning approach based on heatmap scoring with the help of Python libraries such as Pandas, Seaborn, and Matplotlib. The analysis results show that the 3rd design provides the best performance. This research contributes to data-driven decision making in shredder machine selection, with an approach that combines technical and economic aspects in an integrated manner. The findings are expected to serve as a reference for the development of efficient and sustainable waste plastic processing technology in the microscale industry sector.
INOVASI TEKNOLOGI PORTABLE CHOPPING GRASS MACHINE DALAM OPTIMALISASI PRODUKSI PAKAN SAPI DI DESA SAMBIGEDE Amat Nyoto; Erwin Komara Mindarta; Didin Zakariya Lubis; Ken Aulia Azizi M; Ahmad Munawwirul Furqonul Khulidi; Rama Adi Setiawan
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 6 (2024): Vol. 5 No. 6 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i6.37283

Abstract

Penggemukan sapi di Desa Sambigede, Kecamatan Sumberpucung, Kabupaten Malang menghadapi tantangan efisiensi produksi pakan ternak. Sebagian besar peternak masih mengandalkan metode manual yang memerlukan waktu dan tenaga besar, serta meningkatkan biaya operasional. Untuk mengatasi masalah ini, pengabdian masyarakat ini menerapkan teknologi Portable Chopping Grass Machine, yang dirancang untuk memotong dan mengolah rumput secara cepat dan efisien. Metode pelaksanaan dimulai dari identifikasi masalah melalui observasi dan wawancara, dilanjutkan dengan desain dan uji coba teknologi, serta evaluasi dampaknya. Hasil menunjukkan peningkatan efisiensi produksi pakan hingga 60%, penurunan biaya operasional sekitar 40%, serta peningkatan kualitas pakan. Dampak ini tidak hanya meringankan beban kerja peternak, tetapi juga membuka peluang perluasan usaha penggemukan sapi dengan biaya lebih rendah. Kesimpulannya, penerapan teknologi ini berpotensi meningkatkan kesejahteraan peternak melalui efisiensi dan kualitas produksi yang lebih baik. Dukungan dari pemerintah dan lembaga lokal menjadi kunci dalam keberhasilan adopsi teknologi ini, yang berpotensi memperkuat ekonomi desa dan berkontribusi pada praktik peternakan yang lebih modern dan berkelanjutan di Desa Sambigede.
Peningkatan Kualitas Produk Cetak 3D melalui Integrasi Autoresume dan Pemantauan Suhu pada Mesin Double Vertical Frame Didin Zakariya Lubis; M Ihwanudin; Muhammad Ilman Nur Sasongko; Miftakhul Huda; Farhan Ardi Prayoga; Abdah Fikri Hamdani
Rekayasa Vol 19, No 1: January - April 2026
Publisher : Universitas Trunodjoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v19i1.31307

Abstract

Masalah umum pada proses pencetakan 3D printer adalah gangguan listrik mendadak dan suhu nozzle yang tidak stabil, yang dapat menyebabkan kegagalan cetak serta menurunkan kualitas produk. Penelitian ini bertujuan merancang dan mengintegrasikan sistem autoresume serta sensor suhu berbasis thermistor pada mesin 3D printer Double Vertical Frame guna meningkatkan kontinuitas dan mutu hasil cetak. Metode yang digunakan adalah Research and Development (RD) melalui tahap observasi, studi literatur, perancangan sistem, pengujian, dan analisis data. Pengujian dilakukan pada tiga skenario gangguan daya (10, 15, dan 30 menit) dan tiga variasi suhu nozzle (190 °C, 210 °C, dan 260 °C) menggunakan filamen PLA. Hasil menunjukkan sistem autoresume mampu melanjutkan proses pencetakan secara otomatis dengan hasil stabil. Suhu 210 °C menghasilkan cetakan terbaik, sedangkan suhu 190 °C menunjukkan lemahnya adhesi lapisan, dan 260 °C menyebabkan over-extrusion serta ketidaksesuaian dimensi. Sistem ini terbukti meningkatkan efisiensi pencetakan serta meminimalkan risiko kegagalan akibat gangguan eksternal.
Optimasi Desain dan Analisis Struktur Bracket Kombinasi Menggunakan FEA dan Topology Optimization untuk Kendaraan Hemat Energi Adrian Fasa Putra; Amrul Khasani; Didin Zakariya Lubis
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 1 (2026): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i1.5126

Abstract

The increasing consumption of fossil fuels in the transportation sector has encouraged the development of energy-efficient vehicles through structural weight reduction. However, previous studies generally optimized axle brackets and brake caliper brackets separately while employing only a single optimization approach. This study proposes an integrated bracket combining both functions through the integration of Aluminum 6061 material selection, wall thickness adjustment, topology optimization, finite element analysis (FEA), and weighted scoring. Topology optimization was performed using a minimize mass objective with a 60% retained mass, producing four design alternatives evaluated based on mass, von Mises stress, deformation, and safety factor. The results indicate that Design 4 achieved the highest weighted scoring value of 0.995 and reduced bracket mass by 43.9% compared with the initial design while maintaining a maximum stress of 38.664 MPa, a maximum deformation of 0.0266 mm, and a safety factor of 2.229. The scientific contribution of this study lies in the development of an integrated bracket evaluated through multiple optimization strategies within a single design framework. Practically, the proposed design has the potential to reduce vehicle weight and support higher energy efficiency in Urban Concept Shell Eco-marathon vehicles.
Co-Authors Abdah Fikri Hamdani Adjie P.W, Muhammad Adrian Fasa Putra Adrianto, Sis Nanda Kus Agung Budi Darmawan Agus Suyetno Ahmad Munawwirul Furqonul Khulidi Akbar, Rafi Aliyudin F, Rifan Ambar Isna Azizah Amrul Khasani Andoko Andoko, Andoko Andri Wisnu Wardana Andrianto, Sis Nanda Kus Ardiansyah, Mochammad Fachrizal Dani Irawan Darmawan, Muhammad Wahid Dewi Izzatus Tsamroh E., Wahyu Dwi Erwin Komara Mindarta Farhan Ardi Prayoga I.Y.H, Kyagus Ahmad Imam Sudjono Ipan Arianto J, Khansa Farrel Jibril Maulana Ken Aulia Azizi M Lea Rachmat Indrasepta M. Ihwanudin M.H, Rachmanda Miftakhul Huda Mohammad Ainul Yaqin, Mohammad Ainul Muhammad Ilman Nur Sasongko Muhammad Ilman Nur Sasongko Muhammad Sultan, Muhammad Nur Ali Ridho Pasha, Muhammad Faizullah Prasetya, Riduwan Puteri Ardista Nursisda Mawangi Putri Nadia Furoidah Rahmatullah Rahmatullah Rama Adi Setiawan Redyarsa Dharma Bintara Riana Nurmalasari Riyanto, Obaja Eden Sentosa Rizky Ramadhan Rosyi Damayani Rr. Poppy Puspitasari Shiddiqy, Taqiyyudin Ahmad As Suharmanto Taupik Yuhana Vidya Purnamasari Wicaksono, Moch. Wahyu Widowati, Tamara Rahma Wiwik Mardiana Yoto Yoto Yudha Rian Pratama Yusuf Maulana, Yusuf