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Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia
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Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
Published by Universitas Mataram
ISSN : 2088088X     EISSN : 25021729     DOI : https://doi.org/10.29303/dtm.v14i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Mechanical Engineering Physics
The Dinamika Teknik Mesin is a peer-reviewed academic journal which publishes originally research papers or simulation/computational articles in all aspect of Mechanical Engineering such as energy conversion, materials, design and production/ manufacturing. The Dinamika Teknik Mesin publishes in two issues per volume annually appearing in June and December. Due to administrative constraints, then starting in January 2018, the Dinamika Teknik Mesin publishes the volume and issue in January and July. However, starting in 2020, the Dinamika Teknik Mesin publishes issues in April and October due to the new administration.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 452 Documents
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ANALISA VARIASI TINGGI KELUARAN TABUNG KOMPRESOR TERHADAP UNJUK KERJA POMPA HIDRAM Suparman Ahmadi; Rudy Sutanto; Arif Mulyanto
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.698 KB)

Abstract

Water is one factor that is very important and necessary in the life of living creatures. Therefore, water should be available whenever and wherever in sufficient number, time, and it’s quality. The distribution of water in the plateau required an environmentally friendly tool and lower of operational cost. Hydraulic Ram (Hydram) pump is a pump which does not require external energy as the main driving force. This research would observe the effect of discharge input‘s variation and high variation of the compressor tube output (Air Chamber) toward the efficiency resulting.The specifications of Hydram pump which is used in this research is a 3-inch compressor tube (Air Chamber) with 60 cm of height. On the compressor tube there are five high variations output with 10 cm range in each pump’s body. The high levels of water used is 6 meter from the pump and the high water lift (output) used is 9,2 meter. Whereas, the parameter measured in this research are discharge input, discharge output, and the efficiency.The research result shows that the variation in output which produces high output discharge is greatest at 10 cm high output is 102,24 mℓ/s for input variations discharge 12421,63 mℓ/s, while the output of the lowest discharge generated by high output 50 cm which is 42,08 mℓ/s for input variations discharge 1730,10 mℓ/s. Whereas the highest efficiency that is 5,084 % higher output obtained from 10 cm to 1730,10 mℓ/s discharge input and the lowest efficiency is 1,023 % derived from 50 cm high output with input discharge 12421,63 mℓ/s.
PERANCANGAN PIPA PESAT, DAN DAYA KELUARAN PEMBANGKIT LISTRIK TENAGA AIR KOKOK PUTIH DESA BILOK PETUNG KECAMATAN SEMBALUN KABUPATEN LOMBOK TIMUR Mahendra, Berlian; Mara, Made; Padang, Yesung Allo
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Inconsequent of decreasing fossil energy, It is necessary to developing an alternative energy source. One of the alternative energy that can be developing in Indonesia especially at Bilok Petung village, district of Sembalun, East Lombok Regency is water power station.This design is to review power station plan in Koko Putih that will have finished. Inputs in this design are flow rate and head which are available in Koko Putih. From this design, it is obtained that the inside penstock diameter  987 mm and the thickness  penstock in head 286.72 m is 15.15 mm, penstock material is carbon steel with specification ASTM A252 Grade 2. Head effective of Koko Putih water power plan is 249.603 m. Output power of turbine is 3.9 MW and output power of generator is 3,6 MW.
Study Kekuatan Bending Dan Struktur Mikro Komposit Polyethylene Yang Diperkuat Oleh Hybrid Serat Sisal Dan Karung Goni I Gede Widiartha; Nasmi Herlina Sari; S. Sujita
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

AbstractThe purpose of this study is to investigate and study the mechanical properties of polyethylene strukrur micro hybrid composites reinforced by fibers sisal and jute sacks.Preparation of composites by hand lay-up method with a ratio of fiber volume fraction of sisal and jute sacks 30%: 0%, 20%: 10%, 15%: 15%, 10%: 20%, 0%: 30%. With unidirectional sisal fiber orientation and fiber length random burlap gunny sack fibers 2 cm. Specimen testing is performed with a standard bending test ASTM D790, and microstructure.Test results obtained from the average bending strength of composites with high fiber volume ratio fraksin 30%: 0% is 74.43 Mpa. While the lowest average for bending strength found in composites with fiber volume fraction of 0%: 30%, the bending strength of 32.21 MPa. Therefore we can conclude the increasing volume fraction of sisal fiber with unidirectional fiber orientation, the higher the bending strength of its appeal and reverse the growing volume of burlap fibers with random orientation of the fibers feeding the lower the bending strength and the strength.
Kajian Pengaruh Fraksi Volume Serat Akibat Perlakuan Alkali Terhadap Ketangguhan Impak Komposit Limbah Serat Aren-Polyester Wijoyo, Wijoyo; Nurhidayat, Achmad; Purnomo, Catur
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The purpose of this study is to investigate the influence of fiber volume fraction of the impact strength of palm fiber-unsaturated polyester composite and investigate the mechanism of fracture caused by impact loads. This research material is palm fiber (Arenga pinnata), unsaturated polyester matrix yukalac BQTN-EX 157 type, hardener metyl etyl ketone peroxide (MEKPO), alkali solution (NaOH) and H2O. Testing with Charpy impact tester, impact test specimens prepared according to standard test ASTM D-5942. While the macro picture is used for the analysis of the fracture. The results showed that the most optimum impact toughness of palm fiber-polyester composite reached 0.011 J/mm2 on volume fraction (Vf) 40%. While the interaction characteristics of palm-fiber bond strength polyester showed matrix cracking behavior of failure on volume fraction (Vf) 10% to 30%, and fiber pull out the volume fraction (Vf) 40% and 50%, the same fracture behavior between the matrix and fibers in volume fraction (Vf) 40% indicates that fiber and matrix has a strong bonding interaction.
Dinamika Teknik Mesin January 2011 Dinamika Dinamika
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Dinamika Teknik Mesin January 2011
Optimasi kekuatan tarik komposit polyester diperkuat serat sisal dengan filler serbuk gergaji kayu sengon menggunakan metode respon surface Okariawan, IDK.; Fajar, M.; Hidayatullah, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 6, No 2 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.917 KB) | DOI: 10.29303/dtm.v6i2.10

Abstract

Composite is an engineering material, which is made from combination of two or more different materials into a new material with new properties. The aim of this research is to investigate optimum composition of sisal fiber reinforced sawdust sengon filled polyester composites on the tensile strength using respon surface methodology.The testing of tensile strength is based on ASTM D 3039 standard. It has dimension 6 mm in thick, 25 mm in width and 340 mm in length. The composites are made by using compaction method. The volume fraction of sisal fiber is 25%, 30% 35%, 40% and 45%. The ratio matrik with filler is varied 5, 10, 15, 20 and 25. The fiber length is 90 mm and the direction of fiber orientation is random.The results shows that the respon surface methodology capable to search value of independent variables to give optimum values of tensile strength. The application of respon surface methodology for the research optimation composition of sisal fiber reinforced sawdust sengon filled polyester composites on the tensile strength showed that the optimum value of tensile strength response could be achieved at volume fraction of sisal fiber 38,6565% and ratio matrik with filler 24,601.
Analisis tegangan pada batang utama mekanisme bukaan payung raksasa Santoso, G.; Permana, M.S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 7, No 2 (2017): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (967.123 KB) | DOI: 10.29303/dtm.v7i2.165

Abstract

Spacious areas as venues for events such as weddings, gatherings, musical performances, bazaars even as parking lots, need to be protected from climate change. Therefore, it is necessary to develop the design of a giant umbrella axle mechanism measuring 12 x 12 meters with a height of 8 meters. This paper describes and stresses the stress analysis on the main bar of the giant umbrella opening mechanism. The result of modeling on the stem is presented in the form of stress contour, factor of safety (FOS), and displacement. The largest working voltage is 2 MPa in the connection area, but this voltage is still low when compared with ASTM A36 rod material structure or equivalent to SS-41 which has a yield strength of 100 MPa. The low voltage von misses are relevant to FOS values that generally reach 100 or more. The largest displacement value is in the center of the stem, which is 0.3 mm. Thus, the modeling results are able to withstand a load of 1 ton.
POTENSI PASIR LOKAL TANJUNG BINTANG PADA ALUMINIUM SAND CASTING TERHADAP POROSITAS PRODUK HASIL COR ALUMINIUM Yusup Hendronursito; Yogi Prayanda
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.085 KB) | DOI: 10.29303/dtm.v6i1.27

Abstract

Green sand is one of the most important components in the process of metal casting. The sand in Indonesia region is varied level of subtlety, size of sand, and shape of sand. Green sand used in the process of metal casting is possible can affect the quality of casting product. This aims to determine the potential of Tanjung Bintang sand as green sand and the quality of the product in terms of porosity defects. The research was conducted by varying sand river from Tanjung Bintang and sand from Maringgai. Composition made varying  is 100%,75%, 50%, and 25% Tanjung Bintang sand compared Maringgai sand with bentonit and water is 10% and 5% constantly .The Examine of the green sand by SNI 15-0312-1989 among other water content, clay content, Grain Finnest Number (GFN), Shape of grain. The result said aluminium casting product with  50% Tanjung Bintang sand has the lowest value of porosity, 5.08% and the higher value with 75% composition of Tanjung Bintang sand, 6.98%.
BENDING AFTER IMPACTKOMPOSIT SANDWICH BERPENGUAT SERAT BAMBU-FIBERGLASS DENGAN COREPOLYURETHANE RIGID FOAM Catur, Agus Dwi; Sinarep, S.; Setyawan, Paryanto Dwi; Zainuri, Achmad; Supriadi, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Impact of the composite sandwich made of materials that become defect, how defects after impact  in material need to be examined .Is that defected composites and wich still has the strength toremain in use?, then the bending after impact strength testing must be done to answer these questions.Composite sandwich with bamboo fiber-fiber glass reinforcement and with a core of 25mm rigid polyurethane foam sheet was produced. Composite sandwich made with two composite sandwich laminate as skinflanking the core. Laminated composite sandwich in this study varied number of layers of reinforcing fibers and type of fiber. Specimens subjected to drop weight impact with varying energy then defect researched and bending  after impact strengthtested. Defects formed on the composite experiencing a drop weight impact loads are: delamination, basin and through hole. The more layers of reinforcing fibers in the composite skin causing moreshallowbasinformed by theresidualimpact. The greater the impact energy causes greater depth of residual basin. Composite sandwich still has the bending strength after impact. Residual bending strength decreases with increasing impact energy imposed on the composite.
PEMANFAATAN SERBUK TEMPURUNG KELAPA PADA KOMPOSIT Al2O3-EPOXY Syafruddin Zohri, Ahmad; Sari, Nasmi Herlina; Sujita, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The purpose of this research is utilization of coconut shell powder on Al2O3-Epoxy composite so it can be used as an alternative material of brake linings that are enviromentlly friendly. In this research, coconut shell powder is used as a filler on Al2O3-Epoxy composites that are made using hand lay up method. Comparison volume fraction of coconut shell powder and Al2O3 was varied amount 0:40, 10:30, 20:20, 30:10 and 40:0 (%). Adhesive was used is epoxy resin namely amount 60%. Test conducted is wear test. The results showed that utilization of coconut shell powder on Al2O3-Epoxy can be decrease the wear so it can be used as an alternative material of brake linings that are environmentally friendly

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