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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Rekayasa Material, Manufaktur & Energi AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Ilmiah Teknik Mesin & Industri (JITMI)
Bobby Umroh
Universitas Medan Area
Aerospace Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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ANALISIS KEKUATAN STRUKTUR RANGKA MESIN PENGERING BAWANG MENGGUNAKAN PERANGKAT LUNAK ANSYS APDL 15.0 Azwir Sofyan; Jean Glusevic; Achmad Jusuf Zulfikar; Bobby Umroh
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 3, No 1 (2019): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v3i1.2417

Abstract

Typical technology for processing red onion affects the quality of red onion produced. The process of drying red onion is one of the important factors in producing the best quality of red onion. Environmentally friendly and easy operation and maintenance technology is the desired technology. In the process of engine design, the strength of the material and structure are the main factors of the building of the machine. Calculation with finite element method (FEM) is the best choice to obtain information on stress distribution on a machine structure. In this study, the calculation of the FEM method was assisted by Ansys APDL 15.0 software. The objectives of this study were: (1) calculation of the load on the tray structure, (2) the distribution of stress on the tray structure, seat, and frame for red onion dryers, and (3) analyzing the strength of the material using the Tresca and Energy Distortion methods. The input load comes from the weight of the tray and red onion. The analytical method used is the finite element method with the type of structural analysis and Beam 3Node 189 element type. Based on the FEM simulation results, the maximum stress that occurs in the tray is 1.22 MPa and the maximum deflection is 0.0055 mm. The maximum stress in the tray support structure is 33.25 MPa and the maximum deflection is 0.014 mm. The maximum stress on the frame structure of the onion drying machine is 0.89 MPa and the maximum deflection is 0.000235 mm which occurs in the middle of the machine structure. Using the Tresca and Distortion Energy theories, it is found that the stresses that occur are still far from the failure criteria for all structures. Likewise, the deflection that occurs is very small so that the construction of the onion drying machine is safe to use.
ANALISA KINERJA MATA PISAU MESIN PENGIRIS KULIT KELAPA MUDA Bobby Umroh; Darianto Darianto; Rinto Supardi Sipangkar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 3, No 1 (2019): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v3i1.2429

Abstract

Kelapa muda umumnya disajikan secara alami dengan bentuk kerucut di atas. Proses pembentukan kelapa ini sudah dilakukan secara manual di industri rumah tangga dengan menggunakan sebilah parang. Proses ini memiliki resiko kecelakaan kerja yang tinggi. Kelapa yang dihasilkan pada proses ini memiliki bentuk yang kurang menarik, tidak seragam, dan sulit untuk dibuka. Oleh sebab itu, dibutuhkan alat pengiris kulit kelapa muda yang dapat menghasilkan bentuk yang lebih baik, seragam, dan aman untuk digunakan. Untuk merancang alat pengiris kulit kelapa muda, penting untuk melakukan analisis mekanisme pemotongan kulit kelapa muda. Tujuan dari penelitian ini adalah untuk menganalisis mekanisme pemotongan kulit kelapa muda, membangun model matematika pendugaan gaya spesifik pemotongan, dan mendapatkan daya pemotongan maksimum pemotongan kulit kelapa muda. Variasi faktor sudut ketajaman, sudut potong, dan sisi mata pisau dioptimalkan untuk menghasilkan gaya potong terendah. Model matematika telah dibangun untuk menduga gaya pemotongan maksimum untuk pisau satu sisi menajam dan dua sisi menajam dengan sudut potong (θ) 00, 150, dan 300. Dari hasil penelitian disimpulkan bahwa jenis pisau yang menghasilkan gaya pemotongan terendah adalah pisau dua sisi menajam dengan sudut ketajaman 100 dan sudut potong 300. Daya terendah untuk pemotongan tegak lurus kulit kelapa muda adalah 0,12 kW yang dihasilkan dengan menggunakan pisau dua sisi menajam dengan sudut ketajaman 100 dan sudut potong 300. Daya pemutaran maksimum yang dibutuhkan untuk memotong kulit kelapa muda adalah 0,75 kW.
PKM USAHA PENGOLAHAN KERIPIK SANJAI BALADO DALAM MENGHADAPI MASALAH PRODUKTIVITAS DI KECAMATAN MEDAN AMPLAS KOTA MEDAN PROVINSI SUMATERA UTARA Bobby Umroh; Darianto; Kamaluddin
AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 4 No. 1 (2020): Amaliah: Jurnal Pengabdian Kepada Masyarakat
Publisher : LP2M UMN AL WASHLIYAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/ajpkm.v4i1.380

Abstract

Usaha yang dilakukan oleh Bapak Mahdian adalah industri rumah tangga (Home Industry) yang berada di Jl. Panglima Denai Gg.Hasibuan No.10 Kecamatan Medan Amplas. Usaha ini memiliki potensi yang luar biasa karena produk ini berupa Keripik Sanjai Balado yang berasal dari ubi roti melalui proses pengolahan yang sederhana. Selain itu pangsa pasar produk ini sangat luas sebab pengusaha produksi mengalami kewalahan dalam memenuhi permintaan. Jenis usaha yang dilakukan adalah produksi pengolahan ubi kayu menjadi Keripik Sanjai Balado yang dapat digunakan sebagai oleh-oleh dari Kota Medan. Masalah yang dihadapi mitra adalah proses pengolahan masih menggunakan cara-cara tradisional, terutama pada proses pencampuran bumbu dengan keripik ubi, yaitu dengan cara memasukkan bahan ke dalam baskom dengan cara menggoyang-goyangkannya. Kapasitas produksi saat ini sebanyak ±100 kg/hari atau sama dengan 130 kg ubi kayu selama 8 jam kerja/hari. Oleh karena itu, diperlukan sebuah rancangan mesin pencampur keripik ubi dengan bumbu dan mesin penggiling bumbu dengan metode penerapan teknologi tepat guna yang mampu bekerja lebih cepat, efisien, dan higienis dengan indikator peningkatan kapasitas produksi di atas 150 kg/hari Keripik Sanjai Balado selama 8 jam kerja/hari agar masyarakat terbantu secara ekonomi. Dari pengabdian yang dilakukan diperoleh peningkatan produksi dalam waktu 5 jam sebesar 160 Kg/hari dengan peningkatan 200% dari sistem manual.
Implementasi Keselamatan dan Kesehatan Kerja (K3) Pada Aktivitas Fabrikasi (Pengelasan, Pemotongan, Penggerindaan) di Kota Medan Rahmatullah .; Bobby Umroh; Arfis Amiruddin; Ahmad Marabdi Siregar
Rekayasa Material, Manufaktur dan Energi Vol 5, No 2: September 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i2.11447

Abstract

Occupational safety and health (OSH) is basically in the interest of all parties and is a basic right for workers. A safe and comfortable working process is an asset that is maintained continuously for quality and timely production. Work accidents are something that is highly avoided, work accident control must be carried out with methods that are in accordance with the field and industrial conditions. The purpose of the discussion in this paper is, how to control OSH in the fabrication industry in a sustainable manner, how to create good OSH regulations and make the production process safe and comfortable, how to form a good and professional work attitude. Work accidents that occur are actually the end result of a rule and unsafe working conditions. 85% of the causes of accidents are human factors. The fabrication industry carries out several processes such as welding, cutting, final processing and other supporting processes in the workshop. Recommendations have been made and implemented to reduce and control work accidents. The application of OSH in accordance with the concept of occupational health and safety management, theoretically the industry will be able to reduce the number of work accidents even to zero accidents from work accidents.
Analisis Tegangan Mekanik Pada Mesin Press Hidrolik Dengan Beban 20 Ton SS Sarjana; Yogi Prawoto; Bobby Umroh; Rahmatullah .; Muhammad Idris
Rekayasa Material, Manufaktur dan Energi Vol 6, No 2: September 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i2.16551

Abstract

Hydraulic press machine is a tool used for work that requires a compressive action force. The stress distribution that occurs in this study will be determined in the development of a press machine under a state of pressing with a load of 20 tons. Researchers use Finite Element Analysis (FEA) to generate data on the stress circulation in the engine construction. The research objectives: (1) Calculate the hydraulic pressure strength in theory, (2) Calculate the mechanical stress in the hydraulic press construction manually using the ANSYS R15.0 software, (3) Calculate the strength of the hydraulic press construction manually and using the ANSYS R15 software. .0. In this review, FEA estimation is completed with the help of Ansys Workbench R15.0 programming. The information load comes from hydraulic pressure. The inspection strategy utilizes FEA with the type of underlying structural analysis. FEA simulation results stated, the maximum stress that occurs in the table is 98.646 MPa and the maximum deformation is 0.21613 mm. The results of Ansys analysis stated that the maximum stress that occurs on the table is 98.646 MPa and the maximum deformation is 0.21613 mm. Considering the Tresca hypothesis, it is found that the stresses and deformations that occur are below the standard for structural failure. So that the frame of the hydraulic press is safe for use in a load of 20 tons.
Analisis Kualitas Produk Botol 30ml Dengan Parameter Temperatur Pada Mesin Injection Molding Model Blow Bima Yoel Elapri; Dadan Ramdan; Bobby Umroh
Jurnal Ilmiah Teknik Mesin & Industri (JITMI) Vol 2, No 2 (2023): Jurnal Ilmiah Teknik Mesin & Industri (JITMI)
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jitmi.v2i2.3424

Abstract

Injection molding is one method that is widely used because of the lower cost required. The resulting plastic product is inseparable from the problem of product defects. This research uses quantitative methods and data collection or field on the subject of research, after that analyzing each parameter. The results of this study the occurrence of several defects in the product, namely short molding product defects have the most defects, namely 3, while over mold, sink mark and weldmark or flow product defects are 2 and the least is the hole product defect, namely 1. The setting at temperature determines the quality, especially in terms of appearance, at a temperature of 190 0C gives a much better product quality compared to temperatures of 180 and 200 0C. Analyze the optimal screw speed of 8 Rpm so that the resulting product can become a desired bottle product. Analysis of product defects that occur are Sink Mark, Weldmark or flow mark, Shrinkage and Over Mold which occurs at temperatures of 180 - 200 0C. The defects that most often arise because the mold has uneven lines so that defects occur in bottle products.
Pembuatan Mesin Internal Mikser Bijih Plastik Kapasitas 50 g/h Jepriadi Purba; Iswandi Iswandi; Bobby Umroh
Jurnal Ilmiah Teknik Mesin & Industri (JITMI) Vol 2, No 1 (2023): Jurnal Ilmiah Teknik Mesin & Industri (JITMI)
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jitmi.v2i1.1952

Abstract

This research aims to test and validate the performance of the IMBP Machine that has been created, ensuring that the machine can operate effectively and perform its components' functions as expected. Additionally, the objectives of this study include achieving the desired processing results of 50 grams per hour of plastic seeds and systematically developing the process of manufacturing the IMBP Machine, starting from the construction of the iron frame, gear housing, end plate, barrel, hopper, cover, packing, knife shaft, blades, binding shaft, and finishing process. The research methodology employed encompasses field observation, literature review, testing and measurement methods, as well as analytical methods. Field observation is utilized to observe and gather data from machines operating in the field. Literature review is conducted to obtain information related to the theory and practices of the IMBP Machine. Testing and measurement methods are employed to evaluate machine performance and collect data regarding the achieved processing outcomes. Furthermore, the analytical method is used to compare the obtained data with the desired specifications, thus validating whether the machine has achieved the intended targets. The research findings demonstrate that this machine successfully produces the IMBP Machine according to the desired specifications. It is proven to function effectively in processing plastic and carbon materials. With the results of this research, it is expected that this machine can contribute positively to plastic waste processing and carbon waste reduction processes.
Rancang Bangun Cetakan Botol Ukuran 30 ml Model Blow Pada Mesin Injection Molding Martua Sangap Siagian; Dadan Ramdan; Bobby Umroh
Jurnal Ilmiah Teknik Mesin & Industri (JITMI) Vol 2, No 1 (2023): Jurnal Ilmiah Teknik Mesin & Industri (JITMI)
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jitmi.v2i1.2009

Abstract

At present, the need to use plastics and the advancement of manufacturing technology for the material itself drive people's demand for plastics, and the development of technology has further increased competition in all fields of industry. Therefore, the plastics industry needs to increase production in terms of quality and quantity. In this way, plastic can slowly replace iron and steel due to its good moldability and light weight. In this research, as a research method, we use quantitative methods by conducting surveys, data collection and field research related to the research theme. After the data is collected, the next step is the fabrication of the test equipment. From the mold fabrication results, the mold is in the shape of a 30 ml bottle with dimensions of 105 mm x 40 mm, inlet ø 6 mm, outlet 3 mm, and the mold is made of aluminum. This mold is called the 3 plate system and the mold consists of 3 main parts which are divided into 3 parts. Good and ideal molding results were obtained with HDPE (High Density Polyethylene) material with injection speed parameters of 8 rpm and temperature of 190°C.
Co-Authors Achmad Jusuf Zulfikar Ahmad Marabdi Siregar Arfis A Azwir Sofyan Bima Yoel Elapri Dadan Ramdan Darianto Darianto Iswandi Iswandi Jean Glusevic Jepriadi Purba Kamaluddin Martua Sangap Siagian Muhammad Idris Rahmatullah . Rahmatullah . Rinto Supardi Sipangkar SS Sarjana Yogi Prawoto