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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Rekayasa Mesin Journal of Environmental Engineering and Sustainable Technology Journal of Mechanical Engineering Science and Technology Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal Surya Masyarakat Conference on Innovation and Application of Science and Technology (CIASTECH) DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal Surya Masyarakat Pilar Teknologi : Jurnal Penelitian Ilmu-ilmu Teknik International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Mechanical Engineering for Society and Industry Jurnal Pengabdian pada Masyarakat Ilmu Pengetahuan dan Teknologi Terintegrasi Dulang: Jurnal Pengabdian Kepada Masyarakat Sasambo: Jurnal Abdimas (Journal of Community Service)
Teguh Dwi Widodo
Universitas Brawijaya
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Pengaruh Campuran Bahan Bakar Biodiesel WCO - Diesel terhadap Karakteristik Api Hasil Pembakaran Spray Difusi pada Concentric Jet Burner Sukri, Sukri; Sasongko, Mega Nur; Widodo, Teguh Dwi
Jurnal Rekayasa Mesin Vol 12, No 2 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.02.22

Abstract

Biofuels from waste cooking oil (WCO) represent a sizable opportunity not only in terms of energy production but also as a way for sustainable development despite their low yield, higher viscosity, lengthy production time and cost. Alternatively, biodiesel can be blended at an appropriate blending ratio with convention diesel oils. The biodiesel and its blends is proved to give better emission characteristics than conventional diesel oils. This study aims to experimentally investigate the effect of the fuel blend on the combustion characteristics of  WCO biodiesel. The characteristic are the droplet size, flame height, flame width and temperature distribution. In this study, the blended fuel are B0 (Solar), B10, B20, B30, B40 and B100 (WCO biodiesel). Measurement and visualization of the combustion flame for each variation of the fuel mixture was were tested at different pressures, namely 4 bar and 5 bar. The experimental results show that the droplet size increases with increasing WCO concentration in the fuel; on the other hand, visualization and calculations show that the height and width of the flame of the fuel mixture decreases Observation on the temperature distribution shows that the WCO biodiesel mixture has the potential to increase the fire temperature at certain points
Surface Modification with Silane Coupling Agent on Tensile Properties of Natural Fiber Composite Willy Artha Wirawan; Sofyan Arief Setyabudi; Teguh Dwi Widodo; Moch. Agus Choiron
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 2 No. 2 (2017)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v2i2.5053

Abstract

Biocomposite is an innovation of renewable material in engineering made from the bark fiber of waru (Hibiscus tiliaceus, the bark is environmentally friendly and has the potential to be developed. The purpose of this study is to modify biocomposite by adding methacryloxypropyltrimethoxysilane-coupling agent on waru bark fiber (Hibiscus tiliaceus) as an effort to improve tensile properties. Waru bast fibers, as reinforcement, were prepared by alkali procces using 6% NaOH solution for 120 minutes and then added 0.75% coupling agent and  ordered using continous fibers with 0°/0°, 0°/90° and 45°/45° orientation. After that, the Biocomposites  were formed with a polyester matrix using Vacuum Pressure Resin Infusion (VAPRI) method. The results of SEM tested showed the quality improvement of the bonds bringing significant impact on the tensile properties of the waru bark biocomposite. On the continous fiber 0°/90° orientated  showed that the highest strength was 401.368 MPa, while biocomposites with 45°/45° orientation has lowest tensile strength of 65.243 MPa
OPTIMASI PROSES PARAMETER PEMOTONGAN PLASMA ARC CUTTING PADA LOGAM ALUMINIUM MENGGUNAKAN METODE TAGUCHI Abdul Hamid; Oyong Novareza; Teguh Dwi Widodo
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2018): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 9 2018
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (246.209 KB)

Abstract

Tujuan penelitian ini yaitu untuk mengetahui pengaruh variasi kuat arus dan gas flow rate terhadap lebar celah alur pemotongan menggunakan cutting plasma pada Aluminium 5083. Metode penelitian yang digunakan ialah rancangan penelitian eksperimental. Teknik analisis data menggunakan analisis metode Taguchi Anova. Analisis statistik tersebut digunakan untuk mengatahui kombinasi parameter yang optimum serta kontribusi setiap parameter. Penerapan metode Taguchi ini dalam optimasi parameter proses pemotongan plasma arc cutting menghasilkan 3 faktor terkontrol yaitu kuat arus, tekanan gas, dan jarak pemotongan dan faktor respon adalah kekasaran (SR), lebar kerf, dan conicity. Berdasarkan analisis Taguchi setiap faktor respons memiliki urutan faktor terkontrol yang berbeda – beda. Jumlah kontribusi untuk setiap variabel respon pada gambar pada kekasaran logam (SR), kuat arus memiliki kontribusi sebesar 93 %, jarak pemotongan 6.01% dan gas 0.9%. Selanjutnya variabel respon yang lain kerf, jarak pemotongan memiliki kontribusi sebesar 85%  diikuti variabel yang lain. Pada conicity kontribusi yang terbesar adalah jarak pemotongan dengan nilai prosentase 66.06% diikuti yang lain. Kata kunci : kuat arus, gas flow rate, lebar kerf, Aluminium, Cutting Plasma, Taguchi, ANOVA
INCREASED TENSILE STRENGTH OF DISSIMILAR FRICTION WELD JOINT OF ROUND BAR A6061/S15C USING UPSET FORCE AND ONE-SIDE CHAMFER ANGLE Yudy Surya Irawan; Dwi Prasetyo; Teguh Dwi Widodo; Wahyono Suprapto; Tjuk Oerbandono
Journal of Environmental Engineering and Sustainable Technology Vol 6, No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2019.006.01.2

Abstract

An effort to increase the tensile strength of dissimilar friction weld joint of round bar A6061/S15C was done in this study using upset force and one-side chamfer angle. Commercial round bar aluminum alloy A6061 and carbon steel S15C were used as rotated and a stationary part, respectively in continuous drive friction welding (CDFW) process. Upset force variations of 10.5, 14, and 17.5 kN were used. CDFW process used burn of length of 15 mm for all CDFW specimens. Chamfer angle was machined on friction area of the S15C stationary part with the variation of 0 (without chamfer angle), 30 and 45 degrees. Tensile strength test, macrostructure observation and micro Vickers hardness testing, SEM-EDX analysis were performed. It was found that the smaller chamfer angle (30 degrees) produced maximum tensile strength of A6061/S15C CDFW joint. It occurred due to smaller formed flash, the lower temperature of the flash that indicate lower heat input and caused smaller heat affected zone and higher hardness in the CDFW joint. The higher upset force also yields higher tensile strength of CDFW joint due to the higher degree of plastic deformation during the upset stage of CDFW joint and this state contributes to higher hardness and tensile strength of A6061/S15C CDFW joint. SEM-EDX analysis result also confirmed that more aluminum existed on the fracture surface of the A6061/S15C CDFW specimen with maximum tensile strength.
KARAKTERISTIK API HASIL PEMBAKARAN DIFUSI SPRAY BIODIESEL WASTE COOKING OIL AKIBAT PENGARUH TEKANAN BAHAN BAKAR Sukri Sukri; Mega Nur Sasongko; Teguh Dwi Widodo
Conference on Innovation and Application of Science and Technology (CIASTECH) CIASTECH 2020 "Peranan Strategis Teknologi Dalam Kehidupan di Era New Normal"
Publisher : Universitas Widyagama Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Minyak jelantah merupakan limbah murah yang melimpah yang dapat dijadikan sebagai bahan pembuatan biodiesel dengan melewati pengolahan terlebih dahulu. Umumnya, minyak jelantah melewati proses esterifikasi dan transesterifikasi untuk menghasilkan asam lemak bebas agar dapat dikatakan sebagai bahan bakar biodiesel. Pada mesin diesel, bahan bakar disemburkan melalui nosel sehingga cairan mengalami atomisasi dan berubah menjadi partikel-partikel kecil (droplet) sebelum mengalami detonasi dan berlanjut pada pelepasan kompresi. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh tekanan bahan bakar terhadap karakteristik api pembakaran difusi spray biodiesel waste cooking oil dengan hasil yang diharapkan yaitu visualisasi nyala api dan tinggi api. Pada peniltian ini menggunakan minyak jelantah (B100) dan bahan bakar solar (B0) dengan variasi tekanan yakni 3.5 bar, 4 bar, 4.5 bar dan 5 bar. Hasil penelitian didapatkan bahan bakar solar (B0) dengan variasi tekanan 5 bar memiliki nilai tinggi api 129,367 cm yang lebih tinggi jika dibandingankan dengan tekanan bahan bakar yang lainnya maupun minyak jelantah (B100). Hal ini disebabkan oleh nilai viskositas pada bahan bakar biodiesel minyak jelantah (B100) lebih besar, sehingga hal tersebut dapat menghambat deformasi dari bahan bakar yang disemburkan.
Pengaruh Perendaman Serat Sabut Kelapa Pada Air Batu Kapur Terhadap Wettability Sutrisno Sutrisno; Rudy Soenoko; Yudy Surya Irawan; Teguh Dwi Widodo
JURNAL PILAR TEKNOLOGI Jurnal Ilmiah Ilmu Ilmu Teknik Vol. 5 No. 1 (2020): JURNAL PILAR TEKNOLOGI
Publisher : LPPM Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/piltek.v5i1.47

Abstract

Abstract— Processing of natural fibers as a support material for composite materials has been widely carried out. Some studies use chemicals as a medium for processing fiber while the treatment with natural ingredients has not been done much. This study discusses the ability of the matrix to penetrate the coconut fiber. Coconut fiber that has been cleaned soaked in a solution of limestone water. Immersion is done with a variation of the lime mass percentage of 0; 2.5; 5; 7.5; 10% with 8 hours soaking time. The matrix used is unsaturated polyester yucalac 157 BQTN-EX. Wettability testing by dripping a matrix on coconut fiber. Coconut coir fibers that have been dripped with a matrix in the photo to determine the contact angle. The results of measurements and observations that with variations in mass percentage of 5% limestone with an immersion time of 8 hours have a contact angle of 11O˂Φ˂31O. Immersion with a percentage of 2.5% shows the surface of the fiber has not changed. Immersion of 7.5% and 10% of the surface of the fiber has been damaged, so the matrix can not absorb the coconut fiber to the maximum. Keywords—: coconut fiber; limestone water; contact angle; wettability; SEM.
PENGARUH PENAMBAHAN HIDROKSIAPATIT DAN KITOSAN PADA PLA DAN ABS TERHADAP SIFAT MEKANIK DARI KOMPOSIT BIOMATERIAL I Wayan Gede Suputra Wardiana; Putu Hadi Setyarini; Teguh Dwi Widodo
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1224

Abstract

The purpose of this study is determine the mechanical properties of PLA-Hap-Chitosan and ABS-HAp-Chitosan composites. Poly lactic acid (PLA) and acrylonitrile butdie styrene (ABS) are polymers that can be applied in the biomedical field because they the to decompose naturally in the human body. To streng and not make the body wear out, a ceramic element that has bioactive, biodegradable and biocompatible properties is added, namely hydrochiapatite (HAp). In addition to hydroxyapatite, chitosan is also added as a natural element that has as an anti-bacterial. The materials used are PLA and ABS with variations using HAp powder and chitosan. The process of making this composite uses an injection molding process with a temperature of 190oC on PLA and 250oC on ABS. The results showed that the addition of HAp and chitosan powder to PLA and ABS caused a decrease in the mechanical properties of the composite, this was due to the difference in polarity which led to the formation of agglomeration in the composite and resulted in poor interactions, causing the mechanical properties of the composite to decrease. The maximum mechanical properties are aimed at the composition of PLA-Hap-Chitosan 90-0-10 and the minimum is PLA-Hap-Chitosan 90-2-8. Meanwhile, for the ABS-HAp-Chitosan composite, the maximum mechanical properties were aimed at the ABS-HAp-Chitosan 90-8-2 composition and the minimum for the ABS-Hap-Chitosan 90-0-10 composition.
PENGARUH LAJU ALIR TUNGSTEN IN-ERT GAS TERHADAP KEKUATAN TARIK DAN KEJUT PADA SAMBUNGAN LAS TIG BAJA GALVANIS DAN ALU-MINIUM 5052 DENGAN FILLER AL-SI 4043 Redi Bintarto; Moh. Syamsul Ma’arif; Denny Widhiyanuriyawan; Teguh Dwi Widodo; Rudianto Raharjo; Nugroho Adi Purnomo
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.656

Abstract

This study aims to determine the effect of the protective gas flow rate on the tensile and shock strength of welded joints of dissimilar metals, namely aluminum 5052 – galvanized steel with Al-Si 4043 filler using argon gas as a shielding gas. The protective gas flow rate parameters used in this study were 14, 17, and 20 liters/minute with a current of 80 A. The results showed that the higher the flow rate of the shielding gas, the lower the porosity defects that occurred in the welding results, resulting in higher tensile and shock strength values. Based on the analysis through the results of penetrant testing, it shows that the addition of the protective gas flow rate is given to reduce the porosity defects in the welding area. The surface area experiencing porosity decreases with the addition of the protective gas flow rate of 14, 17, and 20 liters/minute of 59.748%, 50.918%, and 48.857% respectively. The highest tensile strength was obtained from welding with a protective gas flow rate of 20 liters/minute of 20.01 MPa, then a protective gas flow rate of 17 liters/minute of 16.32 MPa, and the lowest at a protective gas flow rate of 14 liters/minute of 10 ,44 MPa. The highest shock strength is obtained from welding with a protective gas flow rate of 20 liters/minute of 0.5644 mJ/mm2, then a protective gas flow rate of 17 liters/minute of 0.4048 mJ/mm2, and the lowest is a gas flow rate protection 14 liters/minute of 0.2981 mJ/mm2.  
PENGARUH TINGGI CELAH ALIRAN PADA SLUICE GATE TERHADAP KINERJA KINCIR AIR JENIS SUDU MELENGKUNG Ridho Dwi Syahrial; Rudy Soenoko; Teguh Dwi Widodo; Alfeus Sunarso
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.1095

Abstract

This study aimed to determine the effect of adding the sluice gate and the optimal width of the sluice gate on the waterwheel performance. Tests have been carried out experimentally on a laboratory scale. In the test, this study used an open channel waterwheel with variations in the flow gap width gate width of 25mm, 35mm, and 40mm. Each variation of the flow gap width will be tested at a flow rate of 12 liters/second. Parameters such as mill power, turbine torque, and efficiency will be determined based on the measurement results of the rotational speed of the waterwheel wheel, water level, and braking load. The results showed that the width of the sluice gate flow gap affects the performance of the waterwheel. The highest performance was obtained at a flow gap of 25mm followed by a flow gap width of 35mm, and the lowest performance was obtained at a variation of the slit width of 40mm. The maximum performance of the waterwheel is obtained at variations in the width of the flow gap of 25mm at 50 rpm rotation conditions with a discharge of 12 liters/second where liters were generated 15.06 watts and the efficiency 29.82%.
MAINTENANCE PERALATAN PRODUKSI DI PONDOK PESANTREN DARUL MUTTAQIN KOTA BATU Teguh Dwi Widodo; Ari Wahyudi; Rudianto Raharjo; Redi Bintarto; Arif Wahyudiono
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 3 No. 02 (2023): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v3i02.308

Abstract

Darul Muttaqin Islamic boarding school product production activities are very dependent on the equipment that supports the production of these products. By increasing the reliability of production equipment, production from Islamic boarding schools will increase so that the economic level can be achieved well. Production equipment whose reliability is maintained by maintenance includes chili sauce making machines, tempe chips making machines, transportation equipment and other workshop equipment. The maintenance process is carried out by starting with mapping damage data for each component of the existing equipment. This data is taken from several sources that are close to or equal to existing treatments. From the existing analysis, several care and maintenance processes need to be carried out on certain parts of the equipment. The problem found by the Darul Mutaqin Islamic boarding school is a lack of knowledge regarding the proper maintenance process. This maintenance is carried out by the students of the Darul Mutaqin Islamic boarding school with direction and supervision from the service team from the Mechanical Engineering department of Brawijaya University. This activity will result in an increase in students' skills in the field of maintenance.
Co-Authors ABDUL HAMID Abdullah, Harnan Malik Abidin, Muhammad Zaimi Bin Zainal Achmadi Achmadi Adli, Danung Nur Agus Budiarto Ahmad Robittah Alfeus Sunarso Anindito Purnowidodo Anjasari, Asri Aprilia Rizky Riadini Ari Vithon Khasib Mubarok Ari Wahjudi Ari Wahyudi Arif Wahyudiono Atsir Farhan Azahra, Siti Amalina Azhar, Andika Bilqis Afifa Dana Putri D, Dhimas Kaukabi Darmadi, Djarot Bangun Denny Widhiyanuriyawan Dewi, Francisca Gayuh Utami Diah Ayu Fitriani, Diah Ayu Djarot B Darmadi Djarot B. Darmadi, Djarot B. Dwi Kristanto Dwi Kristanto Dwi Prasetyo Erwin Sulistyo Femiana Gapsari MF Fikrul Akbar Alamsyah Firas, Alfian Gayuh Utami Dewi, Francisca Habibulfalah, Endi Hanifa Zahra Wibowo I Wayan Gede Suputra Wardiana Irawan , Yudy Surya Jauhari, Mochamad Helmi Kamil, Muhammad Prisla Kozin, Muhammad Kusumaningsih, Haslinda Lilis Yuliati Ma’arif, Moh. Syamsul Maftuch Maftuch Margono Margono Mega Nur Sasongko Mega Nur Sasongko Moch. Agus Choiron Moch. Syamsul Ma'arif Moh. Syamsul Ma’arif Nadia Ananda Prasetia Dion Nugroho Adi Purnomo Nugroho, Arief Budi Nurkholis Hamidi Oyong Novareza Prabowo Puranto Pratama, Gesha Denny Putri, Debri Harynia Putu Hadi Setyarini Rahmadhani Angger Syahputra Redi Bintarto Redi Bintarto Redi Bintarto, Redi Ridho Dwi Syahrial Rudianto Raharjo Rudianto Raharjo Rudianto Rudianto Rudy Soenoko Rudy Soenoko Runi Asmaranto Sabitah, A'yan Saputra, Indra Adi Saputra, Muhamad Hendra Setiawan, Yustiza Rahadian Siswoyo, Redi Cipto Sofyan Arief Setyabudi Sugiarto S Sukri Sukri sukri Sukri, sukri Sutrisno Sutrisno Sutrisno, Sutrisno Suwarso, Wahyu Handoyo Tamtomo, Bagas Tjuk Oerbandono Utomo, Slamet Prasetyo Wahyono Suprapto Wibisono, Aryasatya Rafli Widi Nugroho Wirawan , Willy Artha Wirawan, Willy Artha WIWIEN ANDRIYANTI Yudy Surya Irawan Zulkarnain, Akbar