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All Journal Rotasi Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Ahmad Fauzan Suryono
Universitas Bengkulu
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pembuatan Alat Ukur Kecepatan Angin Optocoupler dengan SMS Berbasis Mikrokontroler Suryadi, Dedi; Al Ayufhi, Syahlahudhin; Suryono, Ahmad Fauzan; Maimuzar, Maimuzar
ROTASI Vol 21, No 3 (2019): VOLUME 21, NOMOR 3, JULI 2019
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.739 KB) | DOI: 10.14710/rotasi.21.3.187-192

Abstract

Energi listrik merupakan elemen penting dalam berbagai aspek kegiatan manusia. Kebutuhan listirk ini meningkat dengan meningkatnya populasi manusia. Solusi yang dapat diberikan dalam masalah ini adalah energi terbarukan, salah satunya adalah energi angin. Untuk memanfaatkan energi angin, perlu untuk mengetahui potensi angin di daerah yang akan dipasang pembangkit. Penelitian ini akan membuat alat ukur kecepatan angin yang dapat mengukur dan merekam data angina dengan menggunakan optocoupler. Alat ukur ini juga dilengkapi dengan sistem SMS untuk akses datanya dalam jarak jauh. Sehingga alat ini dapat berfungsi bukan hanya sekedar pengukur kecepatan angin tetapi juga bisa mengirim data kepada operator melalui SMS. Dalam penelitian ini, mikrokontroler yang digunakan adalah Arduino Mega 2560. Selanjutnya, alat ukur hasil rancangan dibandingkan dengan alat ukur standar sebagai validasi. Berdasarkan hasil pengujian meninjukkan bahwa alat ukur kecepatan angin berhasil dibuat dan dapat digunakan untuk mengukur potensi angin
Sistem Pakar untuk Mengidentifikasi Kerusakan Mesin Industri Menggunakan Metode Certainty Factor Suryadi, Dedi; Meilianda, Rifki; Suryono, Ahmad Fauzan; Munadi, Munadi
ROTASI Vol 20, No 1 (2018): VOLUME 20, NOMOR 1, JANUARI 2018
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.732 KB) | DOI: 10.14710/rotasi.20.1.56-62

Abstract

Sistem perawatan mesin merupakan suatu hal yang sangat penting di industri untuk memperpanjang umur mesin. Salah satu metode perawat yang sering digunakan adalah predictive maintenance berdasarkan sinyal getaran. Metode ini dapat memprediksi kerusakan mesin berdasarkan sinyal getaran yang timbul, dengan demikian kerusakan parah dapat dihindari. Tetapi metode ini sangat tergantung kepada pakar getaran untuk membaca karakteristik getarannya, sehingga tidak memungkinkan untuk operator biasa tidak bisa berbuat apa-apa apabila para pakar tidak ada. Oleh karena itu, dalam penelitian ini akan merancang sebuah aplikasi sistem pakar berbasis android yang dapat mengidentifikasi kerusakan pada mesin industri. Jenis kerusakan yang dapat diidentifikasi dalam aplikasi ini adalah unbalance, misalignment, kebengkokan poros, kelonggaran, dan kerusakan pada bantalan. Diharapkan aplikasi ini lebih praktis dan dapat digunakan oleh semua operator lapangan untuk mengidentifikasi kerusakan mesin. Metode yang digunakan dalam perancangan aplikasi ini adalah metode certainty factor. Untuk mengukur tingkat keakuratan hasil rancangan, aplikasi yang sudah diintall di android dan divalidasi dengan hasil analisis pakar. Proses validasi data aplikasi meliputi pengujian sistem yang dilakukan dengan membandingkan hasil analisa pakar terhadap hasil analisa aplikasi sistem pakar. Pada penelitian ini, data untuk validasi diambil dari data hasil pengujian getaran pada mesin-mesin di industri. Sinyal getaran inilah yang dianalisis jenis kerusakannya oleh pakar dan dirunning oleh aplikasi. Hasil validasi menunjukkan tingkat akurasi aplikasi mencapai 100%.
SHELL LIFE TIME ANALYSIS FOR INSPECTION PLANNING OF HEAT EXCHANGER OIL REFINERY Suryono, Ahmad Fauzan
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 3 No. 1 (2019): April 2019
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v3i1.9935

Abstract

Heat exchanger is a device where there is a flow of heat transfer between two or more fluids at different temperatures, where both fluids flow in the system. Fluids with a higher temperature will transfer heat to a lower temperature fluid. The shell and tube type is chosen because it has a good mechanical arrangement with a form that is good enough for pressurized operations. Many factors that affect the life span of a heat exchanger include thickness, the rate of reduction in shell thickness and corrosion rate. In this study, the calculation of the corrosion rate is a variable to get the value of remaining life in order to find out whether the shell is still feasible to use. And also know the limits of the process from the shell for further inspections obtained after performing minimum thickness calculations and MAWP. In this calculation carried out using International Standards namely API 660 and ASME Section VIII Division I with material ASTM A-285 Grd CFrom the results of calculations and analysis it was found that the estimated corrosion that occurred in the shell and tube heat exchanger 6-2A at the oil refinery for 14 years (2001 to 2015) amounted to 0.0857 mm/year and the Remaining Life (RL) which is 156.17 years. From these results it was concluded that the shell was feasible to be used until the year 2171. In addition, the MAWP value was also obtained at 5.414 MPa.
PENGARUH POST CURING TREATMENT DAN PERENDAMAN AIR LAUT PADA KOMPOSIT HYBRID KEVLAR/KARBON Suryono, Ahmad Fauzan; Faizal, Ahmad; Hestiawan, Hendri
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 4 No. 1 (2020): April 2020
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v4i1.13273

Abstract

In composite engineering, there are also known hybrid composite types which allow the presence of two or more reinforcing particles and are usually arranged by a straight type and a random type. In this research, hybrid composites are made from a combination of kevlar fiber and carbon twill fiber using the vacuum assisted resin infusion (VARI) method. This fiber will be made into a composite consisting of ten layers with a composition of six layers of kevlar fiber and 4 layers of carbon twill fibers. Vinylester resin is used as a matrix on the composite. The hybrid composite material was given post curing treatment and soaked by sea water. From the tensile test results obtained an average ultimate tensile strength (UTS) value of 314.38 MPa at post curing temperature of 100 °C, then the results of compressive test of the kevlar/carbon hybrid composite with ASTM D6641 obtained an average compress strength value of 87.76 MPa at 100 °C postcuring and the results of the kevlar + carbon-vinylester composite shear test with ASTM D5379 obtained an average shear strength value of 20.45 MPa at post curing room temperature.
RANCANG BANGUN MODEL PINTU GARASI OTOMATIS MENGGUNAKAN SENSOR RFID Budiharjo, Rahmat Satrio; Suryadi, Dedi; Suryono, Ahmad Fauzan
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 4 No. 2 (2020): Oktober 2020
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v4i2.18392

Abstract

The aim of this research is to develop a model of automatic home garage door using RFID sensor. Here, mechanical and control systems were designed. Mechanical systems were used 12V DC motors. Whereas, automatic control systems were carried out using PLC and Arduino UNO microcontrollers. Therefore, the desired speed and time can be controlled. Automatic garage doors worked with a drive system that is the influence of the distance to the distance and time generated during opening and vertical automatic doors. Theresult showed that automatic home garage door has been successfully developed.
PROSES ALIGNMENT PADA SHAFT TURBIN UNIT 2 PLTA TES Gultom, Hendriadi Pargaulan; Suryono, Ahmad Fauzan
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 5 No. 1 (2021): April 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v5i1.20146

Abstract

TES Hydroelectric Power Plant is engaged in power generation. In the process of generating electricity, hydro power relies on a turbine unit that can convert the potential and kinetic energy of water into electrical energy. In the process of the turbine producing electrical energy there are many obstacles that occur which result in a reduction in the productivity of the turbine work, one of the causes is misalignment of the shaft. Misalignment on the shaft can be overcome by carrying out an alignment process which aims to make the shaft return to its initial position so that it is parallel to the other shaft. The alignment process is carried out to get the axial and radial values on the shaft which is then carried out by the adjusting process. The adjusting process is carried out so that the position of the shaft that is out of tolerance returns to the tolerance position and the work of the turbine can return to normal.
Failure Analysis of Axial Compressor Rotor Blade on Alshtom Gas Turbine with Capacity 20 MW at PLTGU Maulana Nasution, Ahmad Rizki; Hestiawan, Hendri; Suryono, Ahmad Fauzan
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 5 No. 2 (2021): Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v5i2.20172

Abstract

This was the work in one of the Gas-Steam Power Plant (PLTGU) in the Southern Sumatra. The compressors on the Alsthom gas turbine suffered damage to the rotor blade section causing it to stop operations. In this study discussed the analysis of the cause of damage to the axial compressor rotor blade with the aim of knowing the causative factors of damage, the mechanism of damage, the shape of the microstructure and the size of the grain. Observations are made by direct macro observations. After making observations, it continues with the analysis of observations. From the results of the analysis, it was concluded that the damage occurred was influenced by several factors, namely corrosion, service life and environmental conditions. If the damage is compared to the size of the grain then the part that is a lot of damage has a larger grain size compared to the slightly damaged part.
Co-Authors Ahmad Faizal Al Ayufhi, Syahlahudhin Budiharjo, Rahmat Satrio Dedi Suryadi Gultom, Hendriadi Pargaulan Hendri Hestiawan Maimuzar Maimuzar Maulana Nasution, Ahmad Rizki Meilianda, Rifki Munadi Munadi