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Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin

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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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Pengaruh media pendingin dan waktu pada perlakuan pack carburizing-quenching baja karbon rendah SS400 Sujita, S.; Yudhyadi, I.G.N.K.; Zainuri, A.; Adhi, I.G.A.K.C.; Sutanto, R.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

The SS400 low carbon steel is widely used in the agricultural equipment industry because of its specific properties, malleability good corrosion resistance, and high strength to weight ratio. However, according to several research results it has several weaknesses, low surface hardness, ductility and wear resistance. Therefore, it is necessary to improve its mechanical properties so that the agricultural equipment products produced are of better quality. The purpose of this study was to determine the effect of variations in time and cooling media in the pack carburizing-quenching treatment of SS400 steel specimens. The pack carburizing treatment was carried out at a temperature of 875 ºC, 90 minutes, the carburizing medium was a mixture of corncob charcoal powder and Picntada maxima shell powder, with a composition of 70%: 30%, followed by a quenching process with variations in time (1, 2, 3, 4). minutes) and cooling medium (water, oil SAE 40, cane molasses 10% and cane molasses 30%. The results of the study showed that the time and cooling medium affected the surface hardness, ductility and microstructure of the specimens With 30% cane molasses cooling medium, quenching time of 4 minutes, the largest specimen absorbed impact energy (toughness) is 2.23 J/mm2. On the other hand, the lowest surface hardness number is 285 Kg/mm2.The increased ductility causes the cracking marks to disappear on the specimen surface. Based on observations with SEM, there is a decomposition of the martensite structure with coarser grain sizes.

Pengaruh minyak zippo pada kecepatan rambatan api dan residu dari komposit epoksi dengan penguat serat jute N.M.A.R. Adriani; I.G.K Sukadana; I.G.A.K.C. Adhi; I.D.G.A. Subagia
Dinamika Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin
Publisher : Universitas Mataram

This study investigated the rate of flame propagation and residue quality of epoxy composite with jute fiber reinforcement. Three layer of jute fibers were stacked as reinforcement of composites. It was manufactured by the injection method (vacuum assisted injection, VARI). In this study, the zippo oil as flame trigger was added on the specimen. This study aims to investigate the effects of zippo oil on the rate of flame propagation and residue of composites. The flame rate testing was based on ASTM D 635 standard, with repetitions of 5 times for each sample that conducted inside of the combustion chamber. Test results obtained in addition to carbon dioxide (CO2) are carbon monoxide (CO) and methane (CH4), as well as dust particles (PM10). The result of measuring the flame propagation rate with zippo fuel is 0.23 mm/s, while composite without zippo oil is 0.17 mm/s. Furthermore, CO2 residue with zippo oil addition is 1.55% and without zippo oil is 1.57%, respectively. Meanwhile, residual test results for contaminants such as carbon monoxide (CO) and Methane (CH4) from composites with the addition of zippo oil were 0.006 % and 0.008% respectively. In additional, the remaining composite burned without zippo oil has an equal value of CO and methane about 0.002%. The conclusion shows that there was an increase of flame propagation rate and residual value produced after the addition of zippo oil, and that pollutant residues exceeded threshold value.

Pengaruh waktu operasi dan daya mesin diesel dongfeng r175 berbahan bakar oli bekas terhadap emisi CO, CO2, HC, dan opasitas A. Sasmita; Y. Yohanes; A.R. Widyanto
Dinamika Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin
Publisher : Universitas Mataram

The Production Laboratory of the Department of Mechanical Engineering, Riau University, has modified the diesel engine used as a used oil-fueled generator, but the problem is that the emission feasibility test has not been carried out. The purpose of this study was to analyze the relationship between the operating time and power of the diesel engine as a generator with the amount of emissions produced. This research was conducted by direct measurement of the emission produced by a diesel engine using a gas analyzer, by operating the diesel engine for 30 minutes and measuring emissions every 5 minutes. This study also varied the power load, starting at idle, 700 W, 1000 W, and a maximum power of 2000 W. The calorific value of used lubricant was tested using a bomb calorimeter are 50.445 kJ/kg. The results obtained are that the highest level of CO emission is 0.45%, the highest level of CO2 emission is 8.6%, the highest level of HC emission is 41 ppm, and the highest level of opacity is 70%.e

Kajian timbulan sampah untuk menentukan produksi sampah rumah tangga dan evaluasi kapasitas TPS (studi kasus: kelurahan Jemmpong Baru-Mataram) I.M. Suartika; S. Syahrul; M. Mirmanto; M. Wirawan
Dinamika Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin
Publisher : Universitas Mataram

TPS is a temporary shelter of garbage before it is transported or disposed of to landfill. In order for TPS to accommodate garbage, it is necessary to know the volume of garbage to be served. This study aims to; firstly knowing the occurrence of household waste produced in the village of Jempong Baru, the second conducts an evaluation of the feasibility of TPS capacity to temporarily accommodate the waste produced based on the results of the study. The method used is descriptive method by conducting garbage survey based on SNI-19-3964-1994 and TPS capacity evaluation based on PERMEN PU RI No. 03/PRT/M/2013. From the results of the study obtained the emergence of household waste produced by the community in the village of Jempong Baru 6183 kg / day or 41907 liters / day equal to 41.9 m3 / day. Organic waste 3779 kg / day, plastic waste 572.5 kg / day, other non-organic waste 1775 kg / day. Then the results of measurement and evaluation of existing TPS with a capacity of 32 m3 with a waste ritasi one rate per day. So the existing TPS capacity is not enough to accommodate the volume of waste produced per day as much as 41.9 m3. The TPS capacity should be greater than the volume of waste produced. The results of this study are very useful to make improvements to the waste management system in Mataram city and especially in the village of Jempong Baru which is efficient and effective.

Perilaku water absorption pada komposit hybrid serat agel tenun dan serat gelas Hestiawan, H.; Jamasri, J.; Kusmono, K.; Puspawan, A.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

This study aimed to investigate the effect of alkali treatment and stacking sequences on water absorption and flexural strength in woven agel and glass fibers reinforced hybrid composites. The research materials are woven agel fiber, E-200 glass fiber, unsaturated polyester resin Yukalac 157 BQTN, and catalyst of methyl ethyl ketone peroxide (MEKP). The alkali treatment is carried out on the woven agel fibers by soaking the fiber in 5% NaOH solution for 1 hour. Then the fiber is washed with fresh water and dried for 48 hours. Manufacturing techniques used vacuum bagging with suction pressure of 70 cmHg at room temperature. The amount of reinforcing fiber 7 fibers consists of 3 glass fibers and 4 agel woven fibers. The water absorption test uses a 3.5% NaCl solution for 1080 hours at room temperature. Water absorption test specimens based on ASTM D570 standard. The research results showed that alkali treatment with glass fiber arrangement on the specimen surface effectively decreased water absorption and increased the flexural strength of woven agel and glass fibers hybrid composites. This can be seen from the decrease in water content in equilibrium by 8.67%, the diffusion coefficient of 5.74 x 10-12 m2/s, and the flexural strength before and after immersion, which are 135 MPa and 125 MPa respectively.

Pengembangan alat uji tarik dengan beban maksimal 2 kN Zariatin, D.L.; Kurniawan, R.M.; Ikhsan, N.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

To find out the characteristics of a material, various tests are needed. One of them is the tensile test. Various brands of tensile testing machines for natural fibers and composite materials applications are available on the market. However, it becomes a challenge to design and manufacture a prototype tensile test machine by utilizing existing components. The Pahl & Beitz design method was used in the design process. The third variant among the three generated variants was chosen and manufactured. The performance test was carried out on a specimen according to ASTM D 638 type 1. It is found that the tensile load was 698 N, and the tensile strength was 16.6 MPa. As a comparison, similar specimens were tested by using UTM tension RTF-2410. The average tensile strength was 17.4 MPa. It can be concluded that the tensile test machine worked adequately with a deviation of 0.8 MPa. This deviation can occur due to differences in specimens.

Efek suhu sintering dan komposisi bahan terhadap karakteristik mekanik komposit berbahan limbah aluminium dan kaca menggunakan metode metalurgi serbuk Triadi, A.A. A.; Wangi, K. G.K.; Setyawan, P. D.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

The waste has been a big problem for human and environment and has become a hot issue until recently. One of the wastes that we often encounter is aluminum waste. Aluminum waste can indeed be re-melted, but the results of the smelting will produce even more dangerous waste, namely Toxic Hazardous Material) waste. In addition to aluminum waste, there is also a lot of waste that we encounter in our daily lives, namely glass waste. This study aims to maximize the potential of aluminum waste and glass waste by examining the effect of variations in sintering temperature and material composition on the hardness and compressive strength of the composite. This research is started by crushing the solid material into the mesh of 100, the next stage is mixing the powder and then print it with 7 tons pressure load. The last step is sintering the specimens at temperatures of 390oC, 490oC, and 590oC with 60 minutes holding time. The results show that the highest hardness value is 60 HRF and the highest compressive strength value is 235.59 MPa. Macrostructure observation shows that there is greater porosity in the specimen with lower mechanical properties. Variation of sintering temperature has a directly proportional effect on the hardness and compressive strength values. Variation in the composition of material gives an inversely proportional effect on the two tests of mechanical properties when viewed from the percent addition of glass powder.

Pemanfaatan limbah tandan buah kosong kelapa sawit sebagai penguat komposit untuk diaplikasikan sebagai bahan baku outer shell helm Standar Nasional Indonesia (SNI) Bismantolo, P.; Hestiawan, H.; Wardhani, F.; Utama, M.F.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Oil palm empty fruit bunch is abundantly available as waste from palm oil processing which is only used for boiler fuel and plant fertilizers. This study aims to investigate the utilization of oil palm empty fruit bunch as a composite reinforcement material to be applied as a raw material for the outer shell of Indonesian national standard (SNI) helmets. The materials used include oil palm empty fruit bunch, the polyester resin of BQTN yukalac, and the catalyst of MEKPO. The manufacturing process uses the hand lay-up technique by varying the fiber volume fractions 3, 6, 9, 12%, and therefore the fiber size passes mesh of 20 and 50. The tensile test uses the ASTM standard D 638 while the impact test uses the ASTM standard D 5942. Fiber volume fraction and fiber size affect the mechanical properties of oil palm fiber reinforced composites. The results of the tensile and impact tests showed that the highest tensile strength and impact toughness were obtained within the composite with a fiber volume fraction of 6% and a mesh of 50, which were 34.74 MPa and 60.21 kJ/m², respectively. In comparison with the tensile strength of the SNI helmet of 33.93 MPa, the oil palm empty fruit bunch fiber can be used as a composite reinforcement for the outer shell of the SNI helmet.

Konduktivitas termal komposit resin epoksi dan serbuk arang tempurung kelapa Mirmanto, M.; Sugiman, S.; Fathurrahman, F.; Ramadhani, M.D.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Composite materials are materials that are widely developed and their use has been widespread in various industrial and household sectors. Epoxy composites filled with coconut shell charcoal powder have been tested for their thermal conductivity properties using the one-dimensional conduction method. The tested specimens had dimensions of 50 mm x 50 mm x 5 mm made of epoxy and coconut shell powder with a percentage of charcoal weight of 0%, 10%, 20% and 30%. The specimen is inserted into a thermal conductivity measuring instrument made of solid aluminum which is insulated around it. The heater is mounted on the aluminum as a heat source, while the other end is left open to the free air in the room. The results showed that the highest average thermal conductivity was a 30% variation of 0.5003 W/m°C, then a 20% variation of 0.3738 W/m°C, a 10% variation of 0.3487 W/m°C. and the lowest at 0% variation without using coconut shell charcoal powder at 0.1364 W/m°C.

Analisis produk dan perancangan combination tool pada produk jam suvenir Polman Bandung Budiarto, H. A.; Permana, S.; Erlangga, Y.Y.; Prabowo, H.A.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Product Based Education is an educational concept that integrate the educational curriculum with the industrial world. This learning help to improve the learning process and student skills by practices under industrial conditions. Moreover, it also improves the quality of teaching and increases the percentage of learning outcomes. Polman Bandung has developed a product called Polman Bandung souvenir clocks made of sheet metal to implement PBE. In this study, a product that has a Polman identity with engineering characteristics was produced and became a practicum media for students majoring in precision tool-making engineering at Polman Bandung. Verein Deutsche Inginieuer 2222 was used as a guideline so that the research carried out is clear, directed, and systematic. The focus of this research is to develop the product by using Autoform as a simulation software for metal forming. The design of the press tool is made based on the product analysis results. Forming analysis has been done to determine the feasibility, formability, and distribution of body component materials by using Autoform. The results showed that Aluminum 1050 sheet metal with 0.5 mm of thickness is suited for this product. The optimum free blank is 170 × 170 × 0.5 mm and feasible to make. The distribution of Forming Limit Diagram showed that the safe area is 68.5%, the insufficient stretch areas of 1.02%, the wrinkling areas tendency of 19.12%, and wrinkled areas that are still within the tolerance limit of 11.35%.

Page 22 of 46 | Total Record : 452

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Mirmanto

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dinamikateknikmesin@gmail.com

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+6282111738971

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dinamikateknikmesin@gmail.com

Editorial Address
Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Mirmanto

Contact Email dinamikateknikmesin@gmail.com

Phone +6282111738971

Journal Mail Official dinamikateknikmesin@gmail.com

Editorial Address Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

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Contact Name
Mirmanto

Contact Email
dinamikateknikmesin@gmail.com

Phone
+6282111738971

Journal Mail Official
dinamikateknikmesin@gmail.com

Editorial Address
Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA