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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

Author-ID : 729528

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 Ball Peening terhadap Kekerasan Baja Tahan Karat AISI 316L Widodo, Teguh Dwi; Raharjo, Rudianto
Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

In this work, ball peening was performed in order to evaluate its effect on the AISI 316L hardness. The process was conducted by employing AISI E52100 Chrome Steel ball which has hardness 752 HVN as bomber. In this research ball peening process was performed at three different nozzle pressure (6, 7, and 8 bar) for 5 minutes. Vickers Micro Hardness Tester and Digital Optical Microscope was used to characterize the samples hardness and grains structure respectively. The results showed that the hardness of AISI 316L was improved. It may due to plastic deformation which toke places on its grains.

Analisis Penambahan Coupling Agent terhadap Sifat Tarik Biokomposit Kulit Waru (Hibiscus Tiliaceus)-Polyester Wirawan, Willy Artha; Widodo, Teguh Dwi; Zulkarnain, Akbar
Jurnal Rekayasa Mesin Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

The aim of this research is to investigate the effect addition of silane coupling agents of Waru bast-polyester composite on tensile strength. Biocomposite is an innovation in material engineering made from the environment-friendly and potentially-developed bast fibers of Waru tree. Waru bast fibers, as reinforcement, were prepared by alkali procces employing using 6% NaOH solution for 120 minutes and then were added coupling agent with variation of 0%, 0.25%, 0.5%, 0.75% and 1.0%. The biocomposite was formed by continuous fiber arrangement using 60:40 fiber-matrix mass fractions with vacuum pressure resin infusion method. Tensile test specimens were formulated base ASTM D638-03 standard. Biocomposite investigation was performed by tensile test, while bond quality observation utilized use micro photo. The results of the study show that the highest strength of biocomposite was 401,368 Mpa on the silane coupling agent addition0.75%

Desain Manufaktur Bracket Aluminium Raharjo, Rudianto; Widodo, Teguh Dwi; Bintarto, Redi
Jurnal Rekayasa Mesin Vol 9, No 2 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Machining is one of the processes in a manufacturing of a product. Manufacturing design is needed for improving the quality of a product. The desired manufacturing process is the achievement of a product with a smooth level of roughness and a short time. Bracket is one component of a series of machines. Work on bracket using CNC milling and Turning machine. The material used is aluminum alloy 6063. The main variables in this machining process are the speed of feeding, cutting speed and feeding motion. The results achieved in the machining process of this bracket are for the roughness on the surface of the N5 with Ra (ideal) = 0.4 Î¼m of Ra (actual) = 0.410 Î¼m. As for the roughness of N6 with Ra (ideal) = 0,8 Î¼m obtained result Ra (actual) = 0,832 Î¼m and 0,625 Î¼m. Total machining time for one workpiece are 1 hour 57 minutes 25 seconds.

Analisa Struktur Mikro dan Kekuatan Bending Sambungan Las TIG dengan Perbedaan Kuat Arus Listrik pada Logam Tak Sejenis Aluminium Paduan 5052-Baja Galvanis dengan Filler Al-Si 4043 Bintarto, Redi; Widodo, Teguh Dwi; Raharjo, Rudianto; Maâ€™arif, Moh. Syamsul; Dewi, Francisca Gayuh Utami; Pratama, Gesha Denny
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.14

This study aims to determine the various effect of heat input due to varied electric current on microstructure of the weld joints and the bending strength of 2 dissimilar metals (aluminum alloy 5052 and galvanized steel) with Al-Si 4043 as filler. This experimental research was worked out by varying the strength of the current which can then be calculated into a heat input. The current inputs applied were 30.8 J / mm (70A), 35.2 J / mm (80A) and 39.6 J / mm (90A) while the protective gas flow rate used is 14 liters / minute. This study showed that the increase in heat input greatly affects the shape of the weld area microstructure, i.e. the microstructure and bending strength. Greater heat input due to higher current can melt larger area, so that the join process occured better. The highest bending strength at 9.05 Mpa was achieved for heat input at 39.6 J / mm or strong current of 90 A. The weakest bending strength at 8.88 Mpa was achieved for heat input at 35.2 J / mm or a strong current of 70 A.

Pengaruh Tegangan dan Waktu pada Proses Elektropolishing terhadap Surface Roghness Material Stainless Steel AISI 316L Widodo, Teguh Dwi; Raharjo, Rudianto; Kusumaningsih, Haslinda; Bintarto, Redi; Siswoyo, Redi Cipto; Sasongko, Mega Nur
Jurnal Rekayasa Mesin Vol 10, No 3 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.03.11

The purpose of this work is to reveal the surface roughness and topography of AISI 316L stainless steel due to electropolishing processes. In this paper, AISI 316L was electropolished in various times of immersion and various voltage of the processes. The mechanism of electropolishing is eroding the surface of the substrate by controlling the electron excitation process. The electropolishing processes were carried out at 4, 5, and 6 minutes also in three different voltage 4, 6, and 8 volts. The results show that the surface roughness decrease as the treatment time and also as an increase in voltage.

Pengaruh Clamping Frame Kayu Meranti dan ASTM A36 pada Friction Spot Joining AL 1100 dan PVC Raharjo, Rudianto; Hamidi, Nurkholis; Widodo, Teguh Dwi; Bintarto, Redi; Habibulfalah, Endi
Rekayasa Mesin Vol 11, No 2 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.02.12

In this paper, the effect of welding parameters on the shear strength of Al-PVC hybrid structures was discussed. This Research developed welding parameters in the form of Plunge Depth, heating time, and clamping frame materials. By these different parameters would result in different shear strength of welded materials. Following optimization of the process, a detailed comparison of the properties and microstructures of two different materials (meranti wood and ASTM A36 Steel) would affect to different values of thermal conductivity. The Aluminum used was Al 1100, which was welded by using a friction stir spot welding method with Polyvinyl Chloride (PVC). In this study, by the different heating times, the shear test was carried out with the ASTM D3163 standard. In this study, it was found that the maximum temperature of Aluminum occurs during the 2nd second of the welding process and then decreased in the 5th second until 60th second. However, the optimum shear strength found at 20th second. Following heat transfer and degradation materials, the 2mm plunge depth has a higher temperature and higher shear strength than 1,5mm plunge depth. Differences in the response of the two depth were attributed to the difference in mechanical interlocking. This study found that the ASTM A36 clamping frame maximum shear load of 182.4 N is higher than meranti wood frame of 125.5 N. Differences in these value are attributed to the differences of the thermal conductivity, which meranti wood had a lower thermal conductivity than ASTM A36. These have findings significant implications for the commercial application of welding hybrid structures. The best way to take advantage of the benefit of AL-PVC Structure Hybrid for friction stir spot welding would appear to be 20 second heating time, 2mm plunge depth with ASTM clamping frame.

Pengaruh Kecepatan Pengadukan pada Proses Stircasting terhadap Sifat Mekanik pada Paduan Aluminium Jauhari, Mochamad Helmi; Darmadi, Djarot B; Widodo, Teguh Dwi
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.5

The composite material is a material composed of a mixture or combination of two or more of the major elements that macro differ in shape and material composition that basically can not be separated. In this research, the aluminum used was the outcome of production cesspool with the addition of volcanic dust from Mount Kelud by 2% as reinforcement. The stir casting process is the casting process by adding a material (powder form) in pure metal (aluminum), which has been melted and then stirring constantly. After that, the composite materials (the volcanic dust from Mount Kelud) were mixed slowly into the stirred liquid material. In this research, the variations of stirring speed were 0,200,300,400,500Â and 600 rpm. The stirring each time for 4 minutes. In this study, the stirring speed in the casting process was 0, 200, 300, 400, 500, and 600 rpm. Tensile test, Impact test, and microstructure observations were carried out on the casting results. From these tests, the highest modulus of elasticity and impact value was obtained at the 600rpm stirring process. It may due to globular grains are more evenly distributed. And the result of metallographic testing was stirring speed could affect the amount and density of composite grain structure. The faster the stirring, the grain structure was getting smaller and close.

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

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 Â 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

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

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

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.

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 Maâ€™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

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