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Analisis Troubleshooting pada Engine G3408 Generator Set Caterpillar Hersalniar; Firdaus; Oong Hanwar; Hendri Candra Mayana; Yuli Yetri
Manutech : Jurnal Teknologi Manufaktur Vol. 12 No. 02 (2020): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.114 KB) | DOI: 10.33504/manutech.v12i2.139

Abstract

A research has been conducted about Troubleshooting that occurs in the Caterpillar Engine G3408 generator Set which aims to analyze the causes of the hydraulic lock and determine how to solve the problems that occur in the Caterpillar G3408 Engine Generator Set. The research method is to perform detection, diagnostic, and repair on the engine by doing a visual check, looking for the root of the problem and doing the test. The results are engine has a hydraulic lock caused by a damaged one of the components of the Air Intake and Exhaust System. The after cooler is also damaged due to its long service life, causing the coolant to enter the combustion chamber. From the overall analysis it is concluded that the cause of engine failure is one of the components is damaged due to a long service life and to overcome this is doing repair and replacement of components on the After cooler with new components and do the periodic maintenance on the Caterpillar G3408 Engine Generator Set.
Pengaruh Kemiringan Saluran Terhadap Fenomena Flooding Dengan Gangguan Pada Aliran Udara–Air Dan Udara–Minyak Tanah Hendri Candra Mayana
Jurnal Teknik Mesin Vol 11 No 2 (2018): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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Abstract

Some equipments which are used in petroleum industries, chemical industries, steam power-plants and nuclear reactors must avoid the flooding phenomena in order to work at optimal condition. The purpose of this research is to investigate the effects of inclination and obstacle on flooding onset at counter-current air-water and air-kerosene flows with porous inlet and sharp outlet. The model of obstacle was conformed to industrial application i.e .pipe joining or pipe scaling. Experimen ts were conducted in a plexyglass pipe of 25.4 mm diameter and 2500 mm length of test section at annular flow pattern. The variation of inclination of ducts are 90o, 80o and 60o. The geometry of the obstacle is a ring with rectangular cross sectional which is installed with a distance 600 mm or 1200 mm from the inlet. The result of the research indicated that the effects of inclination and obstacle of ducts are significant toward flooding onset. Flooding phenomena was indicated with drastic increase of pressure gradient above the liquid inlet. Flooding phenomena happened earlier of larger inclination of the ducts and nearer obstacle of the inlet. This phenomena also early happened at kerosene which have higher viscosity and lower surface tension than water
PEMBUATAN MESIN PENGIRIS BAWANG Ricky Aldian Desrizal; Rivanol Chadry; Hendri Candra Mayana
Jurnal Teknik Mesin Vol 12 No 1 (2019): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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Abstract

The main goal to be achieved is to be able to make an onion slicing machine so that it can answer the problem if the onion slicing is carried out in a larger capacity. The onion slicing machine is made to support the increase in the production of shallot slices, which are ready to be fried for the production of scallion onions in household industries. In a small scale, the work can be done manually with a knife or other simple cutting tool. Problems will arise if large quantities of sliced or cut production are available. In order to facilitate the community in processing shallots and learn about the problems, namely how to produce a shallot slicing machine with uniform slices results using different slope angles on the knife. the working principle of this machine is the Onion which has been peeled dry skin inserted into the funnel then the plate on the back of which has a knife, will rotate because it is driven by an electric motor. As a result of the rotation the onion will be sliced and the slice will fall down, and below it a container will be used as a cross section of the onion which has been finished sliced as a result
THE IMPLEMENTATION OF PANDAS PROFILING AS A TOOL FOR ANALYZING MECHANICAL PROPERTIES DATA OF NICKEL-BASED SUPERALLOYS BASED ON ALLOY CHEMICAL COMPOSITION Desmarita Leni; Yuda Perdana Kusuma; Muchlisinalahuddin Muchlisinalahuddin; Ruzita Sumiati; Hendri Candra Mayana
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 4, No 3 (2022)
Publisher : Universitas Mercu Buana, Prodi S2 Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v4i3.19439

Abstract

The purpose of this study is to evaluate the mechanical properties of nickel-based superalloys with variations in alloy chemical compositions using the Exploratory Data Analysis (EDA) method with the assistance of the pandas profiling library on Google Colab. In this study, data from 312 tensile tests of nickel-based superalloys were used as research samples, with alloy chemical compositions including carbon (C), manganese (Mn), silicon (Si), chromium (Cr), nickel (Ni), molybdenum (Mo), vanadium (V), nitrogen (N), niobium (Nb), cobalt (Co), tungsten (W), aluminum (Al), and titanium (Ti), as well as mechanical properties such as yield strength (YS), tensile strength (TS), and elongation (EL). The methodology used in this study was the EDA method with the assistance of the pandas profiling library on Google Colab, which enables the automatic creation of a dataset report, presenting information on various aspects such as data structure, descriptive statistics, correlation, distribution, and missing values. The results show that yield strength has a fairly high correlation with titanium (0.51), medium correlations with nickel (0.25), vanadium (0.2), and cobalt (0.2). Tensile strength in nickel-based superalloys has a fairly high correlation with yield strength (0.88), carbon (0.49), and cobalt (0.55), and medium correlations with titanium (0.25) and vanadium (0.25). Elongation in nickel-based superalloys has a negative and fairly high correlation with tensile strength (-0.62) and yield strength (-0.58). Some warnings for missing data and zero values in some variables were identified. These results indicate that the pandas profiling library can be used as a tool to analyze the data of mechanical properties of nickel-based superalloys quickly and easily, and provide clear information on data patterns, data structure, and correlation among data.
Steering System Design for the Marapi Electric Car Politeknik Negeri Padang Hendri Candra Mayana; Hanif
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 2 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i2.37

Abstract

This research aims to design and build a steering system for electric cars at the Padang State Polytechnic. This design is focused on meeting the minimum turning radius requirement of 6 meters in accordance with the KMHE 2023 regulations, with the aim of demonstrating compliance with expected safety and maneuverability standards. The steering system used is Rack and Pinion, which has proven to be effective in controlling the turning angle of the wheels with the turning angle of the inside front wheel being 15.74º and the outside front wheel being 13.71°. This ensures that the vehicle can make turns with optimal smoothness and stability. Ackerman Angle Analysis for a Tire Slip Angle of 7.35° confirms that this steering system design is successful in optimizing vehicle performance in various turning conditions. Overall, the design of this steering system satisfies the essential technical requirements for urban electric vehicles, increasing efficiency and effectiveness in energy use and ensuring user safety.
Analisis Exergoeconomic Pada Kompresor Gas Engine Siklus Miller Berbahan Bakar Pome Fajri, Ahmad Hasnul; Adriansyah, Adriansyah; Mayana, Hendri Candra; Leni, Desmarita
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1636

Abstract

Energy efficiency is a crucial challenge in energy resource management. One innovative approach to improving efficiency is through exergy and exergoeconomic analysis. Exergy analysis considers not only the quantity of energy but also its quality, based on the second law of thermodynamics. Meanwhile, exergoeconomic analysis integrates exergy analysis with economic aspects, such as cost calculations. This study uses the Tandun Biogas Power Plant (PLTBg) as a case study to evaluate energy efficiency and operational costs. The analysis begins with the collection of economic data, including investment costs, fixed operation and maintenance (OM) costs, and variable OM costs.The results show that the investment cost is $0.016/kWh, fixed OM costs are $0.030/kWh, and variable OM costs are $0.009/kWh. The cost losses due to exergy destruction before the overhaul of the gas engine were recorded at $127.23/hour, with contributions from each component as follows: combustion chamber ($51.63/hour), compressor ($21.62/hour), and turbocharger ($53.98/hour). After the overhaul, the total cost losses significantly decreased to $3.3752/hour, with detailed losses from the combustion chamber ($1.168/hour), compressor ($2.193/hour), and turbocharger ($0.0142/hour). This study demonstrates that exergy and exergoeconomic analysis can identify significant opportunities to improve energy efficiency and reduce operational costs in biogas-based power plants. This approach serves as a practical guideline for optimizing energy systems in the renewable energy industry sector.
Rancang Bangun Mesin Penepung Pakan Ternak Multifungsi Untuk Kelompok Tani Berkah Mandiri Mayana, Hendri Candra; Mulyadi, Mulyadi; Nofriadi, Nofriadi; Z, Dito Farizal; Putri, Elsy Kumala
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1653

Abstract

Animal feed is one of the essential components supporting livestock growth and development. High-quality feed can significantly enhance farm productivity. However, in the preparation of feed in powdered form, efficient machinery is often required to process raw materials into fine particles. This study aims to design and develop a multifunctional animal feed grinder capable of processing various raw materials, such as corn, rice husks, oil palm fronds, wild grass, and straw, into fine powder. The machine is designed with a power output of 4,856.95 watts, utilizing a 6.5 HP gasoline engine, and has a production capacity of 11.34 kg/hour at 3,600 rpm. The trial results demonstrated the machine's production capacity for each material per hour: corn at 32.2 kg, rice husks at 22.9 kg, oil palm fronds at 30.2 kg, wild grass at 16.5 kg, and straw at 10.8 kg. This multifunctional grinder is expected to assist farmer groups in processing animal feed more efficiently and effectively.
Design Of Portable Cold Storage Using Solar Power Defri Pratama; Desmarita Leni; Dedi Erawadi; Hendri Candra Mayana
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 3 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i3.47

Abstract

This research aims to design and analyze a portable cold storage system that uses solar energy as the main power source. The research methods used include literature studies, system design, and design analysis to evaluate the performance of the cold storage being designed. The designed system has a volume of 2.93 liters with an operational temperature of -2°C, which requires a total energy requirement of 114,912 kWh per day to maintain storage temperature stability under external environmental conditions of 30°C. The solar panels used have an efficiency of 18% with a standard irradiation exposure of 1000 W/m², capable of producing 4,788 watts of power, which shows sufficient efficiency to meet the cold storage energy needs. Based on the analysis, it is estimated that 43.2 solar panels are needed to meet daily energy needs, which indicates the large scale of energy infrastructure needed to maintain cold storage operations 24 hours a day. In addition, to ensure operational continuity, especially at night or when exposure to sunlight is low, energy storage capacity in the form of batteries of 230 kWh is required so that the cold storage can function without interruption. The results of this research show that with proper planning, the use of renewable energy through solar power can be optimized to support the sustainability of cold storage operations, even in environments with significant energy availability challenges. This research makes an important contribution to the development of efficient and sustainable portable cold storage technology
Implementasi Mesin Pencacah Rumput Serbaguna Untuk Pembuatan Pupuk Organik Upaya Mengatasi Kelangkaan Pupuk Pada Petani Jahe Kelompok Tani Makmur Hendra, Hendra; Leni, Desmarita; Mulyadi, Mulyadi; Mayana, Hendri Candra; Erawadi, Dedi
Jurnal Vokasi Vol 9, No 1 (2025): Jurnal Vokasi (Maret)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v9i1.5870

Abstract

Kelangkaan pupuk dan tingginya biaya pengadaan menjadi kendala utama bagi Kelompok Tani Makmur di Kanagarian Sako, Kelurahan Batu Gadang, sehingga menurunkan produktivitas pertanian, khususnya budidaya jahe. Program pengabdian masyarakat ini bertujuan memberikan solusi melalui penerapan mesin pencacah rumput serbaguna untuk produksi pupuk organik. Kegiatan utama meliputi penyerahan mesin, uji coba fungsional, dan pelatihan intensif pembuatan pupuk organik kepada anggota kelompok tani. Hasil uji coba menunjukkan bahwa mesin ini mampu memproses bahan organik secara cepat dan efisien, dengan hasil cacahan yang optimal untuk kompos. Pelatihan berjalan interaktif, dengan petani antusias mempelajari cara memanfaatkan limbah organik yang tersedia di lahan sekitar. Penggunaan mesin ini menjadikan proses produksi pupuk lebih hemat biaya, mengurangi ketergantungan pada pupuk kimia, dan meningkatkan ketersediaan pupuk murah secara berkelanjutan. Program ini berhasil mendukung peningkatan hasil panen jahe sekaligus mendorong kemandirian petani dalam penyediaan pupuk organik yang ramah lingkungan untuk mitra kelompok Tani makmur.
Deteksi Kerusakan Ban Mobil Menggunakan Convolutional Neural Network dengan Arsitektur ResNet-34 Hendri Candra Mayana; Desmarita Leni
JURNAL SURYA TEKNIKA Vol. 10 No. 2 (2023): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v10i2.6336

Abstract

The examination of tire damage can be categorized as part of vehicle maintenance with the aim of ensuring the tires are in good condition. Visual inspection using human observation has limitations, making it not always accurate and prone to errors in determining tire roadworthiness. This study designs a machine learning model using Convolutional Neural Network (CNN) with a ResNet-34 architecture to detect car tire damage. The parameters used in training this CNN model include the Adam optimizer, a learning rate of 0.0001, batch size 32, and 50 epochs. In this study, there are two predicted image classes: normal tires and damaged tires. The research results indicate that the CNN model with ResNet-34 architecture can predict both classes very well, as evidenced by the model evaluation results with an accuracy of 0.916, precision of 0.907, recall of 0.927, and an F1 score of 0.917. These results suggest that the CNN model with ResNet-34 architecture can be used as an effective tool for inspecting tire damage.