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All Journal Jurnal Energi Dan Manufaktur Rotasi Jurnal Simetris ROTOR: JURNAL ILMIAH TEKNIK MESIN Indonesian Journal of Science and Technology Journal of Mechanical Engineering Science and Technology STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Jurnal Polimesin
Ahmad Syuhri
Staf Pengajar Jurusan Teknik Mesin Fakultas Teknik Universitas Jember
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH VARIASI DIAMETER TERHADAP DISTRIBUSI TEMPERATUR PADA MESO COMBUSTOR DENGAN SUDDEN EXPANSION Prabowo Restu Eranio; Rosyadi Adib Ahmad; Syuhri Ahmad; Intan Hardiatama; Andi Sanata; Skriptyan Noor HS; M Edoward Ramadhan
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 1 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Meningkatkan distribusi temperatur pada meso combustor merupakan cara yang efektif dalam meningkatkan efisiensi sistem pembangkit daya micro TPV (thermophotovoltaic). Diameter combustor sangat mempengaruhi distribusi temperatur pada combustor. Tujuan dari penelitian dalam karya tulis ilmiah ini adalah untuk mengamati pengaruh variasi diameter combustor terhadap temperatur dengan mengukur temperatur dinding (Tw) dan ruang bakar (Ti) pada tiga variasi diameter outlet (Do) combustor berukuran 5 mm, 5,5 mm dan 6 mm dengan diameter inlet (Di) yang konstan sebesar 4,5 mm. Hasil penelitian menunjukan bahwa diameter meso combustor sangat mempengaruhi suhu pada dinding dan ruang bakar. Suhu pada dinding combustor (Tw) dipengaruhi oleh besaran surface to volume ratio karena variasi diameter pada combustor, dimana semakin besar nilai rasio (Do combustor kecil) akan menghasilkan suhu dinding yang lebih tinggi, namun dengan heat losses yang besar. Sedangkan suhu pada ruang bakar combustor (Ti) dipengaruhi oleh besarnya vortex yang terbentuk di area sudden expansion. Sudden expansion berukuran besar (Do combustor besar) akan membentuk vortex yang besar sehingga meningkatkan suhu ruang bakar, namun membuat nyala api semakin tidak stabil karena massa berlebih yang dibawa oleh vortex ke dalam zona reaksi.
Characterization of FDM 3D Printed Parts Using TPU + PETG Filaments For Shin Guard Products Mahros Darsin; Agit Yoga Yulio; Ahmad Syuhri; Mochamad Edoward Ramadhan; I Made Ivan W.C.S; Sumarji Sumarji
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4122

Abstract

3D printing machines are used to print products that support sports activities, such as shin guards. During sports, shin guards are protective equipment to prevent injury to the lower legs. Filaments that are suitable for making shin guards are thermoplastic polyurethane (TPU) and polyethylene terephthalate (PETG) because they have impact resistance properties needed to protect the feet during sports. The variation is the level parameter layer height, nozzle temperature, printing speed, and bed temperature. Next, an impact test will be carried out to determine the optimal parameter variation on the 3D printing machine, which is expected to be a reference for printing quality products. This study uses a 3D printer, Ender v3, to print specimens and shin guard products. The material used is TPU+PETG filament. The Taguchi method with the orthogonal matrix L9(3)4 was repeated thrice for each experiment. After that, an analysis of variance was carried out. Parameter variations used in the study were layer height (0.1 mm, 0.2 mm, 0.3 mm), nozzle temperature (220℃, 225℃, 230℃), printing speed (45mm/s, 45mm/s, 50mm/s) and bed temperature. (70℃, 75℃, 80℃). In this study, Charpy impact testing will be carried out. The combination of factors that can produce an optimal impact test is layer height level 2 (0.2 mm), nozzle temperature level 1 (220℃), printing speed level 3 (50 mm/s) and bed temperature level 2 (75℃) with an impact strength value the highest was 27.20 and the lowest was 11.07. The combination of factors that have the most significant effect on the impact test strength values is layer height 63.97%, nozzle temperature 6.19%, printing speed 2.07% and bed temperature 4.74%.
Development of MQL (minimum quantity lubricant) automation in applying cutting fluid on lathes Aris Zainul Muttaqin; Mahros Darsin; Yohan Rizal Kharisma; Ahmad Syuhri; Muhammad Trfiananto
Jurnal POLIMESIN Vol 20, No 2 (2022): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v20i2.2618

Abstract

It is normal to apply cutting fluid to machining, but using it excessively will harm the environment. One of the efforts to reduce it is to apply minimum quantity lubrication (MQL). This study aims to minimize the use of cutting fluid by designing a cutting fluid delivery system with Arduino Uno control. The developed MQL system can be controlled both based on temperature and time. This MQL system was a development from the previous system by replacing the limit and temperature sensor, nozzle, and mini compressor with a sprayer. The performance of this new MQL system was compared to a flooded cutting fluid feeding system. The experimental design of Taguchi L9 (3^4) with additional varied factors such as depth of cut, cutting speed, and feed rate. Each factor consisted of 3 levels. The measured output was cutting fluid consumption. S/N ratio analysis showed that the method of giving the cutting fluid most dominantly affected the outcome. ANOVA showed that more than 97.56% of the factors were dominated by the method. The combination of factors that would produce a minimum burst at a rate of 180 ml/hour if applying a combination of factors and a level of depth of cut 1.8 mm and a cutting speed of 120.89 m/min, provision of cutting fluid with the periodic MQL method and feed rate of 0.122 mm/rev. Meanwhile, the metal removal rate (MRR) analysis recommended the use of periodic cutting fluid methods at a depth of cut of 2.2 mm. The development of the new MQL either temperature control or periodic system control, both were able to comply with the MQL criterion, i.e. the maximum spray of 500 ml/h.
OPTIMASI PARAMETER VACUUM ASSISTED RESIN INFUSION PRODUK FRONT TOP TERHADAP KEKASARAN PERMUKAAN Valerian, Joey; Dwilaksana, Dedi; Syuhri, Ahmad; listyadi S, Digdo; Nashrullah, M Dimyati; Noor HS, Skriptyan
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

The use of composite materials as a substitute for metal materials in the engineering field has become increasingly widespread not only in the field of transportation panels but also in other fields such as property and architecture because alternatives have the advantage of using composite materials to be lightweight, corrosion resistant and strong and can be designed as needed. One of the methods developed to manufacture composite polymers is resin infusion with vacuum assistance. This method is inversely compared to the non-vacuum method. The (VARI) process requires an airtight space in printing and can reduce the fouling effects that occur in non-vacuum processes such as causing a lack of optimal composite material properties. The Taguchi method is a methodology in the field of engineering which is very much aimed at improving a product quality in a time process while at the same time reducing costs and minimal resources. The Taguchi method is a product or process that is robust against noise, therefore this method is a robust design. In writing this research, I have experience in the process of making and researching carbon in body organization in the Mechanical Engineering University of Jember named Tawang Alun, here I will conduct research in analyzing the optimal parameters for the surface roughness characteristics of front cover products made of carbon fiber using a vacuum process. resin infusion aid. The factor that contributes the most to the surface roughness response is vacuum pressure with a contribution of 25.20%. For hardener factor contribution of 14.93% and coating factor of 23.77%. The contribution error that occurs is 36.09%. Each factor has a value contribution that is not too different. Based on the data and analysis results that have been obtained using the Taguchi method with the help of Minitab 19 and Microsoft Excel, it shows that the parameter of vacuum pressure has a significant influence on the results of surface roughness. While the hardener parameter has no significant effect on surface roughness, then the coating parameter has a significant effect on surface roughness. In the calculation of the F test, it can be concluded that the optimal factor parameters in making a front top with a small surface roughness value are 0.4 bar vacuum pressure, 60% hardener and PVAC coating. Keywords: PVAC, vacuum, carbon fiber, resin
Optimalisasi Kinerja Motor Bakar Empat Langkah Berbahan Bakar Bensin dan Penambahan Water Elektrolisis dengan Katalis KOH Aliyansyah, Berly; Ilminnafik, Nasrul; Syuhri, Ahmad
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol 15, No 1 (2024): JURNAL SIMETRIS VOLUME 15 NO 1 TAHUN 2024
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v15i1.10609

Abstract

Indonesia adalah negara dengan penduduk terbanyak didunia. Peningkatan jumlah penduduk juga berdampak dengan bertambahnya kendaraan dan polusi udara.tinginya polusi udara karena kurang sempurnanya pembakaran pada ruang bakar, penambahan elektrolisis air dapat menurunkan emisi gas buang serta dapat menambah kinerja pada motor bakar. Untuk menambah produksi elektrolisis pada penelitian kali ini membandingkan pada kondisi standar dan konsentrasi KOH 3%,6%, 9%. Hasil dari penelitian kali ini mendapatkan kenaikan torsi 2.8% dari standar pada konsentrasi 9%, daya naik 2,2% pada konsentrasi 9%, konsumsi bahan bakar spesifik turun 28.64 % dan emisi gas buang kadar HC turun 94.66 % serta kadar CO turun 97.37%
Analisa Kekasaran Permukaan Baja ST 37 Hasil Proses Milling Vertikal Akibat Variasi Proses Permesinan dan Media Pendingin Cahyono, Hiding; Syuhri, Ahmad; Setiawan, Deny
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 6 No 02 (2024): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v6i02.159

Abstract

Minimum surface roughness in the machining process affects the quality of a material. Likewise with the results of the Vertical Milling process. One of the things that influences surface roughness in the milling process is the selection of machining parameters. Apart from selecting machining process parameters, another thing that influences surface roughness is the presence of coolant. The aim of this research is to determine the surface roughness results of ST37 steel due to variations in cutting speed, feed speed and coolant discharge during the vertical milling process. Data testing uses multiple linear regression. The research results show that the influence of the feeding speed parameter has the greatest influence and the smallest influence is on the coolant discharge, where the results of the regression test results are Ra = 100.636 *(v)-0.577 *(vf)0.159 *(q)-0.245 with a value R Square is 0.846 or 84.6%.
Optimization of the Number of Cylinder Blades in Coffee Pulper Machine: Finite Element Analysis and Simple Additive Weighting Methods Syahriza, Mochamad Rifki; Djumhariyanto, Dwi; Ilminnafik, Nasrul; Darsin, Mahros; Yudistiro, Danang; Basuki, Hari Arbiantara; Wibowo, Robertoes Koekoeh Koentjoro; Syuhri, Ahmad; Sumarji, Sumarji
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 2 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i22024p476

Abstract

The increasing interest in coffee in all circles means that coffee production and quality must always increase due to consumer demands. One way to maintain the quality of coffee beans is by breaking them down using a huller machine. This research aims to improve the optimization of coffee machines by modifying the cylinder blades of huller machines with variations of 3, 4, 5, and 7 cylinder blades in terms of static loading design and quality and production capacity of coffee bean breaking. The experiment was carried out using 400 rpm and breaking 10kg of dry coffee cherries every time the sample was taken. The research results show that the best sample collection is the variation of 3 cylindrical blades with the maximum stress and lowest deformation values of 6.67 MPa and 0.000737 mm. In terms of production quality, it shows that the best sampling was the three cylindrical blade variations with 50% whole and good coffee beans. In terms of production capacity, the most significant capacity was the seven cylindrical blade variations with a value of 294.11 kg/hour. Sampling from the four most optimal variations uses the SAW (Sample Additive Weighting) method. The most optimal result from the 4 test criteria, the variation of 3 cylindrical blades is the best because it has the highest score with a value of 0.9754.
PENGARUH SUDUT DEFLEKSI GEAR TAB ELEVATOR TERHADAP STICK FORCE PILOT PADA PESAWAT N-219 Pribadi, Dicki Hendri; Koekoeh KW, Robertoes; ., Sumarji; Syuhri, Ahmad; Rudi Sugara, Imam
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Indonesia geographically is an archipelagic state that has been recognized by international community according to the PBB law of the sea then was ratified by Indonesia into UUD No.17 of 1985. The number of island in Indonesia currently according to BPS is 17.504 island, that makes Indonesia become the largest archipelagic country in the world and make potentially to have pioneer of aircraft. N-219 Aircraft produced by PT.Dirgantara Indonesia is a pioneer of aircraft that has been developed in Indoensia. Aircraft must meet the flight feasibility criteria to ensure flight safety. One of criteria is the value of a stick force pilot (FE), the force that the pilot receives to control the control surface of an aircraft. Regulation value of the stick force pilot reference is Civil Aviation Safety Regulation (CASR) part 23. The method used in this study is modelling the equations of the motion of the control surface balance tab with the elevator. This study seeks to find the optimum equation to meet the CASR23 regulation where the value of the stick force (FE) is ≤ 75 lbs. The result showed the optimum stick force pilot (FE) value in this modelling is equation III . In critical flight conditions the deflection of the balance tab is not enough to meet the design criteria, trim tab deflection (ẟtrim = 0 – 5˚) is used to reduce stick force pilot value and meets CASR23 regulation. In SLS condition all equation modelling meets the design criteria, where the maximum value stick force pilot (FE) is 51 lbs. keyword : stick force pilot, hinge moment, balance tab, trim tab, elevator.
ANALISIS PENGARUH VARIASI PENDINGIN MINYAK NYAMPLUNG DAN OLI TERHADAP PARAMETER KEAUSAN PAHAT HIGH SPEED STEEL (HSS) PADA PROSES BUBUT PIN SAMBUNGAN GERBONG KERETA Prasetio, Dwi Angga Tary; Hermawan, Yuni; Sidartawan, Robertus; Dwilaksana, Dedi; Syuhri, Ahmad
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 1 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

The use of coolant in the machining process aims to reduce the temperature in the cutting area and reduce friction due to friction between the workpiece and the tool which has an impact on the surface quality of the product. Commercial coolants such as Dromus oil use minerals, which are non-renewable and have a negative impact on the environment. Therefore, to overcome this problem, several studies have been carried out to replace or combine commercial coolants with vegetable oils. In this research, an experiment was carried out on the effect of using nyamplung oil ascutting fluidby mixing three different liquids (nyamplung oil, dromus oil, and water) (25%:25%:50%, 20%:30%:50%, and 30%:20%:50%) and the influence of the contribution of Turning machining parameters on tool wear. Machining was carried out on S45C steel using HSS type M2 chisels. This research method uses the Taguchi methodorthogonal array L9(33) with 3 factors (spindle rotation speed, coolant variation, and cutting depth). The results of this experiment show that a coolant composition of 25%:25%:50% (nyamplung oil:dromus oil:water) in 100ml of liquid contributes to reducing tool wear. Based on the average value, it shows that the highest parameter contribution is spindle speed at 60.26%, followed by cutting depth with 29.14% and coolant variation with a contribution of 9.40%.
PERANCANGAN MESIN PAN GRANULATOR KAPASITAS 250 KG/JAM Hermawan, Yuni; Sidartawan, Robertus; Syuhri, Ahmad
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 1 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Mesin pembuat pupuk organik granul ini merupakan mesin yang digunakan untukmembuat pupuk berbentuk butiran granul guna mempermudah penyimpanan pupuk dannantinya akan lebih effisien dalam penggunaannya. Proses pembuatan pupuk organikgranul diawali dengan pupuk kandang sebagai bahan pupuk organik yang sudahdikeringkan kemudian dihaluskan. Pupuk kandang yang sudah dihaluskan kemudiandibentuk menjadi butiran granul dengan alat pan granulator. Pupuk kandang yang sudahmenjadi butiran granul kemudian dikeringkan. Mesin pan granulator ini dibuat denganmenggunakan perhitungan daya motor, perhitungan poros, perhitungan sabuk, pengaturansudut, dan kecepatan putar pan granulator. Mesin ini memiliki dimensi 200 cm x 170cm x 200 cm yang cocok untuk kelompok tani yang merupakan mitra petani.Mesin ini mampu mengranulkan pupuk organik 250 kg/jam dengan kapasitas produksi setiaphari 2000 kg untuk 8 jam kerja perhari dan ukuran hasil pengranulan 5 – 7 mm.
Co-Authors ., Sumarji Achmad Fitoyo Agit Yoga Yulio Agus Triono Ahmad Adib Rosyadi Ahmad Amril Nurman Ahmad Amril Nurman, Ahmad Amril Ahmad Ayyub Syaiful Aliyansyah, Berly Andi Sanata Aris Zainul Mutaqien Aris Zainul Mutaqqin Aris Zainul Muttaqin Arya Ramadhanu Arya Ramadhanu, Arya Boy Arief Fachri Cahyono, Hiding Danang Yudistiro Dedi Dwi Laksana Dedi Dwilaksana Deny Setiawan Digdo Listyadi, Digdo Dwi Djumhariyanto Gaguk Jatisukamto Haidzar Nurdiansyah Hari Arbiantara Hari Arbiantara Hari Arbiantara Basuki Hari Arbiantara, Hari Hary Sutjahjono Hendry Wicaksana Indra Surya Iwanata Intan Hardiatama Koekoeh KW, Robertoes Kristianta, FX Lazuardi Rahmadhani Luh Putu Ratna Sundari M Edoward Ramadhan M Yuda Pratama M. Angga Saputra Mahros Darsin Mochamad Edoward Ramadhan Muhammad Abduh Muhammad Ardian Firmansyah Muhammad Dimyati Nashrullah Muhammad Hafri Evan Tofianto Muhammad Trfiananto Muhammad Trifiananto Muhammad Wildan Nashrullah, M Dimyati Nasrul Ilminnafik Noor HS, Skriptyan Prabowo Restu Eranio Prasetio, Dwi Angga Tary Pribadi, Dicki Hendri Raihaan, Raihaan Ridha, Fabrobi Rika Dwi Hidayatul Rika Dwi Qoryah Robertus Sidartawan Rudi Sugara, Imam Santoso Mulyadi Sella Devianty Sella Devianty, Sella Skriptyan Noor HS Skriptyan Syuhri Sujana, I Made Ivan Wiyarta Cakra Sumarji Syahriza, Mochamad Rifki Valerian, Joey Veni Dwi Sulastri Wibowo, Robertoes Koekoeh Koentjoro Widyono Hadi Yohan Rizal Kharisma Yuni Hermawan