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All Journal Jurnal Rekayasa Material, Manufaktur & Energi Hasil Pengabdian Kepada Masyarakat
Chandra A Siregar
Universitas Muhammadiyah Sumatera Utara
Aerospace Engineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Law, Crime, Criminology & Criminal Justice

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Pengenalan Sistem Kerja Dan Pemberian Mesin Pencacah Botol Plastik Untuk Menambah Penghasilan Panti Asuhan Ahmad Marabdi Siregar; Chandra A Siregar; Affandi Affandi
JURNAL PRODIKMAS Hasil Pengabdian Kepada Masyarakat Vol 4, No 2 (2020)
Publisher : Universitas Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.211 KB) | DOI: 10.30596/jp.v4i2.6315

Abstract

 Bila sampah plastik bisa diolah dan dikelola secara optimal tentu akan sangat mengurangi jumlah sampah plastik di daerah sekitar panti asuhan, disamping juga dapat menambah dan meningkatkan pendapatan panti asuhan. Kegiatan pengabdian ini dilaksanakan di Panti Asuhan Putra Muhammadiyah Cabang Medan kota yang dihuni oleh para pemuda yang berusia sekolah dan produktif. Pelaksanaannya dalam bentuk Sosialisasi Program Kemitraan Pengembangan Muhammadiyah  (PKPM), pembuatan mesin pencacah sampah plastic, pelatihan penggunaan mesin pencacah plastik; dan pendampingan untuk konsultasi. Metode yang digunakan dari sosialisasi, ceramah, pendampingan, tanya jawab, dan praktik serta pemberian mesin pencacah botol plastik. Mesin pencacah botol plastik ini telah disumbangkan dan Kepala panti asuhan putra Bapak Dr.H. Azamris Chanra, M.AP serta pengurus panti asuhan lainnya berterimakasih kepada UMSU dan Pelaksana PKPM Internal UMSU 2019-2020 dan pengurus panti asuhan akan memamfaatkan mesin pencacah botol plastik serta menjadikannya salah satu sumber pendapatan untuk kelangsungan panti asuhan.    
Simulasi Kekuatan Rangka Mesin Pengupas Kulit Luar Buah Pala Bagus Suwandy; Ahmad Marabdi Siregar; Chandra A Siregar
Rekayasa Material, Manufaktur dan Energi Vol 9, No 2: JULI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i2.31747

Abstract

Nutmeg (Myristica fragrans) is one of Indonesia's leading plantation commodities with high economic value in the food, pharmaceutical, cosmetic, and spice industries. However, the outer skin peeling process is still predominantly performed manually by small and medium-sized enterprises, resulting in low productivity, inconsistent peeling quality, and high labor intensity. Although several nutmeg peeling machines have been developed, previous studies have mainly focused on functional performance without comprehensive structural evaluation before fabrication. Consequently, the structural reliability of machine frames under operational loading remains insufficiently investigated. This study aims to design a nutmeg outer skin peeling machine capable of simultaneously peeling and separating the fruit skin from the seed while performing a numerical evaluation of the frame structure using the Finite Element Method (FEM). The machine was designed using SolidWorks 2022, followed by a linear static structural analysis employing the Finite Element Method. The simulation considered fixed boundary conditions at the frame supports and static loads of 39.2 N, 68.6 N, and 186.3 N, representing the operational loads acting on the upper frame, middle frame, and motor mounting, respectively. Structural responses were evaluated in terms of Von Mises stress, maximum displacement, and factor of safety. The numerical results showed that the maximum Von Mises stresses were 0.811 MPa, 0.751 MPa, and 5.112 MPa, respectively, while the maximum displacement reached only 1.164 mm. These values remain significantly below the material yield strength of 250 MPa, resulting in a high factor of safety of 48.9, indicating that the frame structure is mechanically safe under static loading conditions. The study demonstrates that the proposed frame design possesses sufficient structural strength and stiffness for nutmeg peeling applications. Nevertheless, the present work is limited to static numerical analysis and does not consider dynamic loading, vibration, fatigue, or weld joint behavior, which should be investigated in future studies..
Co-Authors Affandi Ahmad Marabdi Siregar Bagus Suwandy