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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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PERANCANGAN ALAT PEMINDAH PERAHU ”MODEL DEREK” UNTUK NELAYAN TRADISIONAL PESISIR PANTAI CURAM Yudhyadi, IGNK; Suartika, I Made; Zainuri, Achmad; Fajar, M.
Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The steep coastal topography makes the traditional fisherman facing a difficulty for moving boat from/to the sea towards the mainland. With the slope of 2 - 3 meters, it required at least 4 people do the job. This situation is very disturbing and reducing the productivity of the fishermen itself. Therefore, it needs a special equipment or appropriate technology to overcomes the drawback situation. So that, it will improve the efficiency and effectiveness of fishing operations. The method used in this study is an applied research method which the tool is designed based on real phenomena. Moreover, the outcome is the design of boat transfer device that will be used as an additional supplement to the teaching material of design and product development, industrial management, as well as a scientific publications. The design expected can improve the steep coastal fishermen productivity and welfare.
Analisa pengaruh jumlah indentasi dan distribusi tegangan geser pada sambungan perekat baja-baja (paper ini telah dicabut) Salman, S.; Sugiman, S.; Sulistyawati, E.D.; Zainuri, A.; Robiansyah, R.
Dinamika Teknik Mesin Vol 9, No 2 (2019): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v9i2.282

Abstract

Adhesive joints are widely used in automotive industry and shipping industry. Efforts to increase the strength of the connection are still underway. This study aims to determine the effect of the amount of indentation on shear strength on low carbon steel joints and the failure mode when the number of indents is different. The connection was made of low carbon steel with epoxy adhesive as adhesive and adhesive thickness of 0.3 mm. The number of indents varied; with and without indentations 4, 9, 16, and 25 respectively. The indentation process was made by using pillar drilling with 1.5 mm diameter of drill bit. From the results, the specimen without indentation had highest shear strength was about 22 MPa. Connection strength tended to decrease with increasing indentation. By finite element modeling, the distribution of shear stress tended to be uniform without indentation, and the stress at the end of the connection for indented connections was higher than without indentation. 
Analisa FRF secara teoritik dan eksperimental pada komponen struktur dengan profil pelat aluminium akibat eksitasi kejut dan random Arman, R.
Dinamika Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v10i2.333

Abstract

The dynamic behaviour of the vibration system in the experimental analysis is observed from the response to the stimulus acting on it. In this case, the relationship between the stimulus at a certain location and direction is specifically related to its response respectively. The relationship between stimulus and response is called the Frequency Response Function (FRF) or better known as the transfer function. In measuring the transfer function, the stimulus to the structure is given in the form of an excitation force while the vibration response measurement depends on the type of sensor or transducer used. Diverging from the above problems, vibration testing is carried out on a structural model. This test uses an Aluminum beam as a specimen by using an excitation signal that comes from an exciter and an impact hammer. This research aims to examine the dynamic response in the form of vibration characteristics response in the frequency spectrum of an Aluminum beam. Based on this spectrum maps, we can observe the dominant frequency (a frequency with large amplitude). Furthermore, from these frequency data, it is expected to determine which frequency components are derived from component element defects and indications of resonance frequencies on machine elements or noise originating frequencies.
Aplikasi Rekayasa Nilai (Value Engineering) Pada Desain Tungku Briket Arang Biomassa Sistem Kontinyu Berpengapian Semi Otomatis Sebagai Upaya Mempermudah Pemanfaatan Energi Alternatif Mengganti Minyak Tanah Wijana, Made; Joniarta, I Wayan
Dinamika Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The biomassa charcoal briquet is one of principal component of cooking in household scale which has some weakness in its operation, such as take a long time for beginning ignitation, flame energy is not stable, the putting out can not be done quickly, once filling up for once cooking. Impractical operational of briquet stove  caused people did not want to change the use of petroleum stove to the use  of biomass briquet stove. Hence, biomass charcoal briquet stove is modified in order to simplify its operation by increase fungsional aspect, technique aspect, and economical aspect.            The method used in this research is value engineering method in order to choose one alternative of modification of biomass charcoal briquet  stove and analyze with five phase of job planning that include (1) information phase, (2) creative phase, (3) analysis phase, (4) development phase, and (5) presentation phase.            At the analysis phase, it is made analysis to eight alternatives of modification and one initial design which is used as reference of performance evaluation. The evaluation result at development phase is the seventh alternative of modification has the highest value that is 1,358 with performance 425,10 and gives some advantages, those are cooking speed is increased (boilling water in seven minute per liter), operational simplicity is very increased that is once filling up for cooking repeatedly (continue system), cutting out of fire can be done quickly without taking apart of stove (semi automatic), pollution is decreased and stinging smell is not happen.            Biomass charcoal briquet stove has high economic value, because its operasional is almost the same as petroleum stove and its operational cost is a quarter of petroleum stove cost.  So, it is good to be developed and applied to society. 
Pengaruh waktu tahan pack carburizing dan penggunaan media quenching cane molasses terhadap sifat mekanik dan struktur mikro baja karbon rendah Darmo, S.; Sulistyowati, E. D.; Wahyu, R. M.
Dinamika Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v12i1.495

Abstract

 Pack carburizing is one of the methods used to increase the carbon content in steel by using solid media. In this study, the addition of carbon elements was carried out using teak wood charcoal and cow bone powder, after that in quenching using cane molasses. Variations used for holding time are 2 hours, 4 hours, and 6 hours, variations in cane molasses content used 10%, 20%, 30%, and the percentage comparison between cow bone powder and teak wood charcoal is 50%:50%. The results of this study show that the pack carburizing resistance time factor is more influential on the mechanical properties and microstructure of low carbon steel. The highest hardness value is found at a holding time of 6 hours with quenching cane molasses 20% of 799.95 kg/cm2 and the lowest hardness value is found without treatment of 162.62 kg/cm2. For the highest impact toughness is found without treatment of 2.02 Joule/mm2 and the lowest impact toughness value is found at holding time of 6 hours with quenching cane molasses 20% of 1.127 Joule/mm2. For microstructures formed after treatment, martensite structures are formed due to rapid cooling.
Ketahanan balistik plat aluminum berlubang – komposit serat kevlar akibat impak proyektil bentuk hemispherical Fadly, M.S.
Dinamika Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i2.653

Abstract

This study examines the influence of hole diameter on the ballistic resistance of deformable 9 mm full metal jacket (FMJ) calibre projectiles. Both experimental and numerical findings reveal an effective mechanism for overcoming perforated aluminium plate and kevlar fibre composite. The results from experiments and simulations demonstrate that a 3 mm hole diameter can impede the bullet's velocity by penetrating the first and second layers, consequently impacting the back plate that forms a bulge. A hole with a diameter of 5 mm causes projectiles to be perforated with a residual velocity of 20.041 m/s. The 3 mm hole induces a bending effect on the projectile, leading to a deviation from its original trajectory.
Optimasi topologi pada komponen penampan mesin printer 3dimensi dengan metode generative desain Utama, D.W.
Dinamika 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 | DOI: 10.29303/dtm.v7i2.150

Abstract

The process of developing a product is currently demanded faster implementation, where the use of CAD can help speed up the process of product development. The commonly CAD software used is parametric method software, where the user can change the shape of the model by changing the parameters accordingly, after which, the model can be directly analyzed using finite element analysis method. If the design is needed to be changed, then the designer should change the parameters in  CAD module and then performed FEA analysis again. This process is often done repeatedly to produce a product model that meets the needs and criteria specified. Generative design method is a method that uses a series of design criteria and design limitations. In this paper the generative design method is a feature in CAD where topology optimization is applied in creating the design of the tray table. The tray table is the main component of the 3D printer that has design criteria such as static load of 17.912N and geometric boundaries. The generative design used to optimize the weight of the component is reshaped again according to the criteria and aesthetics of the form. The CAD model is retested with the FEA method to ensure safe design. The results show that the best optimazation is at 55% weight reduction with the von mises stress 2.12 MPa and the deflection about 0.129mm.
KARAKTERISTIK KEKUATAN BENDING DAN KEKUATAN TEKAN KOMPOSIT SERAT HYBRID KAPAS/GELAS SEBAGAI PENGGANTI PRODUK KAYU Harsi, Harsi; Sari, Nazmi Herlina; Sinarep, Sinarep
Dinamika Teknik Mesin Vol 5, No 2 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Wood material is very popular in indonesia and all over the world, there are so many people who use it as their buildings contruction and also for their home tools, because the wood material is strong, long lasting, green living, save and lux. On the other hand the wood material will be mouldy if it meets water, thats why this material is not suitable to be placed in humid or wet places we need a new material that can be used as the subtitution of the wood material. The aim of this research is to know about how to make the composite of cotton/glass hybrid fiber and its mecanical using epoxy matrix, and then compare it with wood product. The wood product that used in this research is mahoni.The composite making is using hand lay-up method and the variety fraction volume of cotton fiber and glass fiber are : 30% : 0%, 25% : 5%, 20% : 10%, 15% : 15%, 10% : 20%, 5% : 25%, 0% : 30 %, the epoxy matrix volume fraction is 70 %, where the orientasion of cotton fiber is rondom and 2 cm in lenght, whereas the orientasion of the glass fiber is equally with fiber lenght up to the lenght of mould. The researcher did some test they are: bending test that based on ASTM D 790 standart, compression test that based on ASTM D 695 standart.The bending strenght’s mean of all volume fraction’s varieties of cotton/glass hybrid fiber composite shows the higher bending strenght than the bending strenght of mahoni which is used as the comparator. Afterwards the pressing strenght’s mean of cotton/glass hybrid fiber composite especially in  20%:10% and 0%:30% fraction volume varieties, which is have the values orderly 37,74 MPa and 47,53 MPa, and it shows the higher pressing strenght than the pressing strenght of mahoni, it is 36,78 MPa. Based on the recearch that have been done we can conclude that the characteristic of mechamical cotton/glass hybrid fiber composite can be used as the (alternative) wood subtitution especially mahoni.
Design and simulation of boat pulling system to improve productivity of the traditional fishermen in steep coastal region Yudhyadi, I.G.N.K; Okariawan, I.D.K.; Suartika, I.M.; Adhi, I.G.A.K.C
Dinamika Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v9i1.260

Abstract

The Indonesian coastal line is the largest in the world and has potentially large number of coastal natural resources, such as fish, seaweed etc. However, the Indonesian fishermen, particularly the traditional ones, have always been facing the hard and mediocre life. The situation was derive a specific research whit long-term goal was an attempt to facilitate the traditional fishermens with better tools in order to increase their income. The specific target was designation and implementation of simple and applicable small boat pulling apparatus to cut down the time needed to move the fishing boat on and off shore. It is no doubth that the introduction of the tool will improve the fishermen operation effectiveness and efficiency. Furthermore, the execution of ideas, manual calculation and raw design drawing along with Autodesk Inventor simulations software has been able to produce a model assembly of boat pulling apparatus. The design prerequisite was based on the results of comprehensive series of surveys related to the West Nusa Tenggara coastal conditions which was steep coastal with slope of 15-30 degrees as well as the simplicity of design needed by the fisherman. Based on the results of static analyse with finite element analysis (FMA) and dinamic analysis, the resulting design meets the shafety design requirements. Finally, the design can be said in the safe category and can be used safely in such conditions without harming the fisherman. Finally, this apparatus will economically improve the fishermen traditional life.
REDAMAN SUARA PADA KOMPOSIT SANDWICH POLYESTER BERPENGUAT SERAT SISAL DENGAN CORE STYROFOAM sinarep, S.; Catur, Agus Dwi; Hafidzul, M.
Dinamika Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Penggunaan serat alam pada kulit komposit sandwich dalam  sekat bangunan perlu diteliti kemampuannya untuk menyerap energi suara pada beberapa frekuensi suara target.            Bahan penelitian ini adalah serat sisal anyam, resin polyester, styrofoam. Komposit dibuat dengan metode hand lay-up. Komposit  sandwich polyester tersusun dari dua skin dengan core ditengahnya. Fraksi volume serat komposit sandwich polyester sebagai skin adalah 30 %.  Core yang digunakan ada 2 macam variasi ketebalan yaitu 30 mm dan 40 mm. Spesimen dan prosedur pengujian koefisien redaman suara mengacu pada standar ASTM E1050.Hasil rata-rata redaman suara yang besar terdapat pada spesimen komposit sandwich dengan ketebalan core 30 mm dengan hasil yang fluktuatif pada kenaikan tingkat frekuensi pegujian.  Pada frekuensi rendah 250 Hz dengan nilai redaman 0,809 yang dilapisi kain beludru, frekuensi sedang 750 Hz dengan nilai redaman 0,819 yang dilapisi karpet, dan pada frekuensi tinggi 1500 Hz dengan nilai 0,725 yang dilapisi kain beludru.

Page 39 of 46 | Total Record : 452

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