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All Journal Rekayasa Mesin Pilar Teknologi : Jurnal Penelitian Ilmu-ilmu Teknik International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Pengabdian pada Masyarakat Ilmu Pengetahuan dan Teknologi Terintegrasi Dulang: Jurnal Pengabdian Kepada Masyarakat
Teguh Dwi Widodo
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya
Automotive Engineering Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.929 KB) | DOI: 10.21776/ub.jrm.2016.007.03.7

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (585.809 KB) | DOI: 10.21776/ub.jrm.2018.009.01.6

Abstract

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%
The Effect of Boiling Time of Wulung Bamboo Fiber (Gigantochloa Atroviolacea) in NaOH Solution on Tensile Strength of Epoxy Matriced Composites Redi Bintarto; Teguh Dwi Widodo; Rudianto Raharjo; Erwin Sulistyo; Bagas Tamtomo
International Journal of Mechanical Engineering Technologies and Applications Vol 3, No 1 (2022)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2022.003.01.3

Abstract

The purpose of this study was to determine the effect of immersion time of NaOH at a temperature of 60-70 ℃ in wulung bamboo fibers on the tensile strength of the epoxy matrix composites. Wulung bamboo fibers (Gigantichloa Atroviolacea) have the potential to be used as reinforced in composites because they have high strength and are widely grown in Indonesia. In this study, bamboo wulung fiber reinforcement was used without treatment and with variations, soaking time 30 minutes, 60 minutes, and 90 minutes in 6% NaOH solution with a temperature of 60-70 ℃. The composite manufacturing method used was vacuum assisted resin infusion and the standard composite specimen used as a tensile test was ASTM D638-01. The results showed that the longer the immersion time resulted in a rougher topography of the fiber surface which caused the composite tensile strength to increase due to the better mechanical interlocking between the fibers and the epoxy resin matrix. The wettability results on the fibers also show that the wetness between the fibers and the epoxy resin matrix is getting better, which is shown from the droplet contact angle on the resulting fibers. The highest composite tensile strength was obtained at 90 minutes immersion time of 169.765 MPa followed by immersion time of 60 minutes of 123.2 MPa, immersion time of 5 minutes of 81.7 MPa and without treatment of 71.6 MPa. Based on the results of the macro photo shows that the treatment given will reduce the failure of the pull out and debonding defects on the composite fracture.
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.
Desain Kawasan Sapi Perah untuk Menopang Wisata Desa Lembah Mbencirang di Desa Kebontunggul Teguh Dwi Widodo; Agus Budiarto; Ari Wahjudi; maftuch Maftuch; runi asmaranto; Rudianto Raharjo; sugiarto sugiarto; redi bintarto
Jurnal Pengabdian pada Masyarakat Ilmu Pengetahuan dan Teknologi Terintegrasi Vol. 7 No. 2 (2023): J-INDEKS
Publisher : P2M Polinema

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jindeks.v7i2.389

Abstract

Ketahanan pangan merupakan program yang telah di canangkan oleh pemerintah. Dalam pelaksanaanya pembuatan wilayah dengan ketahanan dapat diintegrasikan dengan wilayah penopang ekonomi lainnya seperti daerah wisata sehingga akan didapat sentra Ekonomi yang mampu dijadikan sebagai sumber penghasilan warga setempat. Desa Kebontunggul merupakan desa yang ada di Kecamatan Gondang Kabupaten Mojokerto. Melalu program Matching Fund Kedaireka yang didanai oleh Kementerian Pendidikan, Kebudayaan, Riset, dan Teknologi Universitas Brawijaya mengadakan program hilirisasi Teknologi berupa pengembangan Kawasan Peternakan sapi perahyang diintegrasikan dengan Kawasan wisata yang ada di daerah setempat yaitu Lembah Mbendcirang yang sebelumnya sudah beroprasi. Tim Matching Fund Universitas Brawijaya mengadakan pemetaan wilayah di desa Kebontunggul terkait potensi lokasi sapi perah, sumberdaya paka, serta akses lokasi integrasi dengan lembah mbencirang. Selanjutnya dengan bantuan drone dan satelit Map Tim Martching Fund Universitas Brawijaya Melakukan pembuatan Materplan dimana dalam pembuatannya juga melibatkan masyarakat setempat sehingga sesuai dengan harapan masyarakat namun tetap memegang aspek Teknolologi yang dikembangkan oleh Universitas Brawiajaya. Selin itu juga dilakukan pelatihan budidaya sapi perah yang dilakukan oleh Tim Matching fund 2022 Universitas Brawijaya
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 Agus Budiarto Ari Wahjudi Ari Wahyudi Arif Wahyudiono Bagas Tamtomo Erwin Sulistyo I Wayan Gede Suputra Wardiana Maftuch Maftuch Putu Hadi Setyarini Redi Bintarto Redi Bintarto Rudianto Raharjo Rudianto Raharjo Rudy Soenoko Runi Asmaranto Sugiarto Sugiarto Sutrisno Sutrisno Wirawan, Willy Artha Yudy Surya Irawan Zulkarnain, Akbar