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Dedy Masnur
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Jurusan Teknik Mesin Fakultas Teknik Universitas Riau Jl Soebrantas km 12,5 Simpang Baru Pekanbaru 28293 Riau - Indonesia
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INDONESIA
Proksima
Published by Universitas Riau
ISSN : -     EISSN : 29885841     DOI : https://doi.org/10.31258
Core Subject : Engineering,
Mechanical Engineering
Jurnal Proksima adalah jurnal ilmiah yang mempublikasi artikel orisinal dan memiliki keterbaruan sebagai kontribusi menambah pemahaman tentang dasar-dasar ilmu rekayasa dan pengaplikasiannya terutama dalam bidang ilmu Teknik Mesin. Publikasi ini diharapkan menjadi solusi dari tantangan dan permasalahan di dunia penelitian dan industry. Isi dari artikel mencakup bidang: Konstruksi: Desain konstruksi, Dinamika kendaraan, Getaran Mekanik, Kontak mekanik dan tribologi Produksi: Design Manufacture, Optimasi Sistem Produksi, Perencanaan Produksi dan Pengendalian Persediaan, Computer-Integrated Manufacturing System, Sustainable Product Design and Manufacturing. Konversi Energi: Energi terbarukan, pengkondisian udara, pembangkit, analisis energi dan exergy, motor bakar, mekanika fluida Material: Teknologi pengecoran dan pembekuan logam. korosi dan pencegahannya, perlakuan permukaan, metallurgy serbuk, karakterisasi material, material baru, fatik, komposit, metallurgi pengelasan, pemrosessan material, komputasi dan pemodelan.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 12 Documents
 1   2 
Pengaruh Variasi Serat Fiberglass Terhadap Kekuatan Tarik Komposit High Density Polyethylene Jhenris Ivanly; M Dalil; Dodi Sofyan Arif
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.1-7

Abstract

This research was aimed to determine the effect of fiberglass fibers in increasing the tensile strength of HDPE composites and their advantages over PVC materials. The specimens were printed using a hot press by pressing and heating at a temperature of 140°C, mixing the materials was carried out by mixing in a measuring cup, then cutting was carried out for tensile testing with the ASTM D3039 standard on the specimen. The results of the study obtained tensile strength with a fraction of 70% vol HDPE resin, 30% vol fiber fiberglass average of 13.774 Mpa with short fiber type and fraction 75% vol HDPE resin, 25% vol fiber fiberglass average of 24,334 Mpa for this type of fiber the length and tensile strength of PVC material has a value of 7 25 Mpa, the tensile strength of HDPE fiberglass composite of 24,334 Mpa is sufficient to replace PVC.
Audit Energi Sistem Tata Cahaya dan Tata Udara Rumah Makan di Kota Pekanbaru Awaludin Martin
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.8-12

Abstract

An energy audit is a method for calculating the level of energy use of a building or buildings, in which the results will be compared with existing standards and then look for solutions to save energy consumption if the level of energy consumption exceeds the standard. The purpose of an energy audit is to reduce energy use and save costs in energy use. In this research, energy audits were carried out at restaurants in Pekanbaru City. The method used is a quantitative method including calculating the use of electricity in lighting and air conditioning systems, Calculating Energy Consumption Intensity (IKE), and Energy Conservation Opportunities (ECO). Based on the results of the study, the IKE value was obtained before saving was 11.03 in the efficient category. After saving, IKE fell to 5.42 in the very efficient category. The electricity that can be saved in a year from this restaurant is 48,234.4 kWh with a total cost of Rp. 69,684,284.
Analisis Penggunaan Cathodic Protection dengan Metode Sacrificial Anode Sebagai Pengendalian Korosi Pipa Minyak 16 Inci PT. Chevron Pacific Indonesia Simp. Perawang-Minas Area Dedy Masnur; Eko Saputra; Putri Nawangsari
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.13-17

Abstract

Cathodic protection is a thermodynamic corrosion control method using metal as the cathode. There are two methods of cathodic protection, namely Sacrificial Anode Cathodic Protection (SACP) and Impressed Current Cathodic Protection (ICPP). This study will analyze the use of Cathodic Protection with the Sacrificial Anode method as corrosion control on a 16 inch oil pipe at PT. Chevron Pacific Indonesia. Carbon steel pipe (API 5L Grade B) with cast magnesium anode material. Calculation of anode requirement for corrosion prevention will be compared with actual field data within 10 years. The calculation results show that the number of calculation parameters used affects the results of the anode requirement on an oil pipe with a length of 16 meters, a diameter of 16 inches, anode with a length of 0.648 m, net weight of anode 7.7 Kg, magnesium anode material with an anode output of 10.8 A/m2, anode density 1765 Kg/m3, wear and tear (volume) 2296 x 10-3 m3 A/y, and a life time of 10 years. Theoretical calculations get 6 anode rods while the actual data requires 8 anode rods.
Analisis Kinematika pada Quick Return Mechanism dengan Menggunakan Metode Bilangan Kompleks Nazaruddin Nazaruddin; Warman Fatra
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.18-24

Abstract

Kinematics analysis includes analysis of position, velocity and acceleration of the rods of a mechanism. The complex number method is a kinematic analytical way to express position, velocity and acceleration vectors in the form of complex numbers. The first step that needs to be done is to determine the position vector of the point to be analyzed, then determine the velocity and acceleration vectors by differentiating with time. After that is done, then the algorithm can be made. The mechanism used for this study is the quick return mechanism. The assumed data for this analysis is the angular velocity of rod 2 is 19.0986 rpm and the acceleration of rod 2 is 0 rad/s2. The results of the position analysis show that if rod 2 rotates one full rotation (360o), then rod 4 rotates about 1/6 circle (232.72o - 294.12o) and the slider moves along the X axis (406.939 - 504.111). The maximum speed behind the slider is 121.45 mm/s while the maximum speed forward for the slider is 101.09 mm/s. A large change in velocity (acceleration) is needed when bar 4 and the slider change direction (from CW to CCW or vice versa), this is indicated by a decrease and increase at the beginning and end of the graphic with significant acceleration
Investigasi Kegagalan Poros Pompa Sentrifugal IP251-U153 pada Unit Recovery Boiler I PT. X Dedy Masnur; Putri Nawangsari; Dea Musyafiroh Akbar
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.25-28

Abstract

PT. X is one of the industries engaged in the pulp and paper sector which uses centrifugal pumps to move compounds such as liquor, water, and so on. Failure occurred in the operation of the centrifugal pump, namely the fracture of the shaft component which was made of AISI329 stainless steel. This study aims to investigate the failure of the IP251-U153 centrifugal pump shaft and provide recommendations for actions to prevent failure. The stages of analysis carried out were macroscopic analysis of the fracture surface and testing of chemical composition using a Spectral Metal Analyzer. The results of the analysis show that the fracture pattern is brittle intergranular fracture and there is a difference in the percentage chemical composition of the shaft material with the composition of the standard shaft material in the elements Molybdenum (Mo), Manganese (Mn) and Copper (Cu). These elements affect the durability of the shaft. Checking the material composition when accepting a purchase and carrying out a check for alignment on the shaft installation is necessary to avoid failure.
Analisis Kebocoran Boiler Pipe Akibat Korosi pada Recovery Boiler 5 PT. ABC. Ridwan Abdurrahman; Dedy Masnur; Abdul Rahman
Proksima Vol 1 No 1 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.1.1.29-32

Abstract

Boiler is one component that is widely used in the energy generation industry and reactors. One of the main components of the boiler is the boiler pipe. In field activities, there was a leak in the boiler pipe which experienced corrosion and erosion of the walls of the pipe. This condition results in a decrease in power and capacity in the boiler. The purpose of this practical work is to observe the causes of damage to the boiler pipe, and provide recommendations for prevention due to damage to the boiler pipe. The methods used are: literature study, observation, interviews, and measurement. The results obtained: (1) The calculation results show that the value of the Reynolds number obtained is 16,032,025.86 (Re>4000, turbulent flow). (2) The cause of corrosion on the boiler pipe is due to liquid droplet impingment which is accompanied by an increase in flow velocity and the occurrence of two phases (steam and water) thereby accelerating depletion in the boiler.
A Study on Mechanical Behavior of Coconut Fiber Composite as an Alternative Material for Mobile Phone Housing Muftil Badri
Proksima Vol 1 No 2 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v1i2.10

Abstract

Mobile phone is one of the most widely used electronic products. Housing is part of a very important component of mobile phone. Mobile phone housing refers to the outer housing of the device that encompasses its internal components. Mobile phone housing materials have been widely developed, such as polyester, polyurethane, carbon fiber, wood and leather. This paper proposes to conduct tensile tests and fabrication of mobile phone housing to determine the mechanical characteristics of coconut fiber composites as an alternative material for mobile phone product. Finite element simulation of drop test is then conducted to determine the impact robustness of a product. The investigation of tensile characteristics was carried out using variations in fiber direction. Vacuum assisted resin infusion is used as a method for manufacturing mobile phone housing product. Finite element simulation of mobile phone housing with various drop test positions was also conducted and the impact behaviour of coconut fiber composite housing materials was also obtained. It was shown that coconut fiber can be used as an alternative material for mobile phone housing. The design of the mobile phone housing also needs to be considered at the corner position of the housing because this is the location where the maximum impact stress occurs.
Experimental study of Undershot Type Water Wheels as Picohydro Power Generators in Irrigation Channels
Proksima Vol 1 No 2 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v1i2.12

Abstract

The need for electrical in rural areas are continues to increase. Meanwhile, the procurement of power plants are limited and experiences many obstacles. The aim of this testing study a hydroelectric power plant in a tourism area is to provide the electricity appropriate that location by utilizing the potential of natural resources. The undershot type water wheel is used as a driving force to drive the electric generator. The resources used come from the flow of irrigation canal which is usually used to irrigate rice fields and the others needs of farmer communities. Measurements of rotation speed, electrical voltage and power produced were carried out within seven days. It is estimated that the generator can produce 75 Watts. The electricity can be utilized for lighting the entrance of tourism areas, food stalls and a residence house. To increase power production found modifications to the irrigation canals need to be considered.
Development of Automatic Hydroponic Plant Watering Based Arduino Microcontroller
Proksima Vol 1 No 2 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v1i2.13

Abstract

This paper aims to develop a design for an automatic hydroponic plant nutrient sprinkler. This plant watering device used an Arduino Mega 2560 microcontroller as the interface and an LCD (Liquid Cristal Display) as a display to indicate nutrient levels. The device design deployed a time system set using an Arduino microcontroller and RTC (Real Time Clock) based watering time settings. The development of this automatic nutrient watering device was equipped with a TDS (Total Dissolve Solid) sensor, which reads the value of the nutrient solution content in the water. The LCD displayed monitoring system performance and the relay functions to turn on and off the water pump connected to the hydroponic media watering pipe installation. The benefits of the device can save time and energy. Therefore, the device is more efficient than the manual watering system.
Analysis of the Braking System in the Gardapati Prototype Energy Saving Car Halim Davista; Syafri Syafri; Fablil Huda; Kaspul Anuar
Proksima Vol 1 No 2 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v1i2.14

Abstract

The braking system is one of the crucial components in a vehicle because braking is a vital safety feature of the vehicle. The braking system functions to reduce or slow down the speed and stop the vehicle, as well as to enable the possibility of parking the vehicle on a downward slope. The braking system under investigation is examined in the prototype vehicle called Gardapati, which employs a hydraulic brake system. Gardapati is a vehicle created by students from the University of Riau's Mechanical Engineering Department, affiliated with the UKM Selembayung, following the standard references provided by the Energy-Efficient Vehicle Competition organized by BPTI. This final project will involve several calculations related to the braking system, following the specifications used in the Gardapati vehicle. First, calculations will determine the dynamic braking force required (Fb) when the vehicle is moving at a speed of 50 km/h with a distance of 20 meters, as well as the static braking force (Fb) required when the vehicle is on an incline of 11.2 degrees, adjusted to the requirements and regulations of the 2023 Energy-Efficient Vehicle Competition (KMHE). Then, the braking distance will be calculated for speeds of 30, 40, and 50 km/h on dry and wet asphalt road conditions. From the calculation results and data analysis, it is found that the required dynamic braking force (Fb) is 510,76 N, and the static braking force (Fb) is 830,31 N. Meanwhile, the minimum braking distance is observed on dry asphalt road conditions at a speed of 30 km/h with a percentage error of 1,59 %, where the theoretical value is 5.67 m and the actual value is 5,76 m. On the other hand, the highest braking distance is observed on wet asphalt road conditions at a speed of 50 km/h with a percentage error of 7,39%, where the theoretical value is 14.47 m and the actual value is 15.54 m. Of the two road conditions, the largest percentage error occurs when testing the vehicle at speeds of 30, 40, and 50 km/h on wet asphalt conditions, amounting to 4,61%. With this level of percentage error, it can be concluded that the variation in the obtained data is relatively small, which is less than 10%.

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