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All Journal ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Penyuluhan Pertanian Sultra Journal of Mechanical Engineering
Kemal Mahfud
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Analisys of Farmers Perceptions of Alsintan Service Business (UPJA) In UPJA Tirtosari, Gunung Kidul, D.I Yogyakarta Irwanto; Adi Prayoga; Kemal Mahfud; Temy Indrayanti
Jurnal Penyuluhan Pertanian Vol 18 No 1 (2023)
Publisher : Politeknik Pembangunan Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51852/jpp.v18i1.584

Abstract

This study aims to determine the level of farmers' perceptions of Alsintan Service Enterprises (UPJA) and the factors that influence farmers' perceptions of UPJA. The research was conducted using survey techniques, descriptive analysis and inferential statistics. The research location was determined purposively, namely Gunungkidul Regency, Yogyakarta Special Region. The UPJA sample was determined purposively, namely UPJA Tirtosari. The sample of farmers was determined purposively, namely UPJA customer farmers as many as 30 respondents, both members of the UPJA group and not members of the UPJA group. Analysis of the level of farmers' perceptions of UPJA statistically quantitative descriptive using a Likert scale with a score of 1 - 5, and the factors that influence farmers' perceptions using multiple linear regression analysis with the Ordinary Least Square (OLS) method. The results showed that farmers' perceptions of UPJA with a score of 4.31 were in the very good category. Perception-forming factors, namely length of formal education, age, farming experience, land area, access to information, the role of extension workers and the role of farmer groups simultaneously influence farmers' perceptions of UPJA significantly. The factor of the role of farmer groups influences farmers' perceptions of UPJA very significantly.
Perancangan desain grain handler sistem screw Aninditya, Mas Wisnu; Muhamad Fadillah; Kemal Mahfud
Sultra Journal of Mechanical Engineering Vol. 4 No. 2 (2025): Sultra Journal of Mechanical Engineering
Publisher : Program Studi Teknik Mesin, Universitas Sulawesi Tenggara

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Abstract

Meningkatnya permintaan pangan di Indonesia menuntut peningkatan efisiensi dalam proses pertanian, khususnya dalam penanganan pasca panen. Salah satu solusi yang dapat diterapkan adalah penggunaan alat mekanis seperti grain handler berbasis sistem screw conveyor. Tugas akhir ini bertujuan untuk merancang grain handler berbasis screw khusus untuk gabah, jagung dan kedelei menggunakan perangkat lunak SolidWorks serta melakukan simulasi struktural pada desain rangka. Proses yang dilakukan meliputi studi literatur, pengukuran, pembuatan sketsa, pemodelan 3D bagian, perakitan, dan simulasi pembebanan. Hasil simulasi menunjukkan tegangan maksimum sebesar 55,69 MPa, perpindahan maksimum sebesar 1,147 mm, dan factor of safety (FOS) minimum sebesar 6,374, yang mengindikasikan bahwa struktur tersebut cukup aman. Proyek ini menghasilkan desain grain handler yang dapat dijadikan referensi untuk pengembangan alat pascapanen di sektor pertanian.
Analisis Kekuatan Struktur Rangka Greenhouse Tipe Single Span Menggunakan Metode Finite Element Analysis Mas Wisnu Aninditya; Muhammad Salman Fadhil; Kemal Mahfud
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.11013

Abstract

The structural integrity of greenhouse facilities is fundamental to agricultural safety and productivity, necessitating rigorous analysis of material stiffness and strength to withstand physical loads. This study evaluates the structural feasibility of a single-span greenhouse frame constructed from galvanized iron, specifically comparing the mechanical performance of a design integrated with "W" type support against a conventional frame without additional support. By employing SolidWorks for Finite Element Analysis (FEA), the research determined critical values for Von Mises stress, resultant displacement, and Factor of Safety (FoS). Simulation results revealed that the frame utilizing W-support exhibited superior rigidity, recording a maximum stress of 1.533×107 N/m2, a displacement of 1.105 mm, and a high Factor of Safety of 13.31. Conversely, the frame without W-support demonstrated increased mechanical susceptibility, yielding a maximum stress of 5.517 ×107 N/m2, a displacement of 5.554 mm, and a Factor of Safety of 3.697. Crucially, the stress values obtained for both configurations remained significantly below the galvanized iron's yield strength of 2.039 ×108 N/m2. Consequently, while the W-support design offers enhanced stability, both structural configurations are deemed safe and feasible for agricultural implementation.
Co-Authors Adi Prayoga IRWANTO Mas Wisnu Aninditya Mas Wisnu Aninditya Muhamad Fadillah Muhammad Salman Fadhil Temy Indrayanti