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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
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
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.
Articles 448 Documents
Pengaruh fraksi volume pada komposit serat kulit jagung dengan matriks polyester terhadap kekuatan tarik sebagai bahan baku industri papan Ramadhani, A.; Prastowo, S.H.B.; Handayani, R.D.
Dinamika Teknik Mesin Vol 12, No 2 (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.v12i2.512

Abstract

Corn is one of the important crops in Indonesia. Corn crop yields produce waste that is underutilized by the community, one of which is corn husks. Innovation in the field of engineering introduces composite materials consisting of reinforcement and fasteners. Corn husk fibre contains 38% cellulose, which serves as a reinforcement for composite materials. The use of composite materials continues to be developed to meet the community’s need for wood raw materials which is decreasing every year. This study aims to obtain the maximum tensile strength of corn husk and polyester matrix composite materials with volume fractions of 2%, 4%, 6%, 8%, and 10%. The method in this study is an experiment, starting from the corn husk soaking process, adding 5% NaOH, printing specimens to testing the tensile strength with Universal Testing Machine (UTM) HT-2402. All tensile strength test results are following the JISA5905-2003 board industry standard with the highest tensile test at a 4% volume fraction of 26.84 MPa.
Implementation of sensor fusion for an anaerobic biogas digester using domestic market waste Tsulutsya, F.B.; Budiarto, H.; Romadhon, A.S.
Dinamika Teknik Mesin Vol 14, No 2 (2024): 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.v14i2.852

Abstract

Domestic market waste is ranked second as the largest producer of organic waste in several regions in Indonesia. This lack can be a valuable thing. For example, alternative energy can be made possible through organic waste, one example is biogas. Vegetable and fruit waste that is produced daily by the market has great potential to be used as a substrate for making biogas, which can later be used as an alternative energy source. By adding other substrates such as methane (CH4), which can be obtained from agricultural waste such as cow dung, which is abundantly available in various regions, these two types of waste can be processed into biogas. The method for extracting biogas here is an anaerobic biogas digester. To maximize biogas through processed waste, two starters are used in the form of EM4 and yeast. The effect of the yeast type starter can maximize CH4 yields, which can be proven by the results of the two types of digesters, namely with yeast 192.56 Ppm while with EM4 ¬93.05 Ppm. In practice, in order to analyze the gas results, the researchers implemented an MQ2 gas sensor and thermocouple. Through sensor fusion, the best methane value can be seen at 192.56 Ppm with a temperature of 34˚ Celsius, which was obtained through fermentation for 30 days. Through this, the benefits obtained are not only reducing waste, but also renewable energy can be obtained. 
Komparasi sifat mekanik antara komposit epoksi berpenguat abu dan sekam padi Martijanti, M.; Sutarno, S.; Sukwadi, R.; Wahyu, M.B.
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.v13i2.649

Abstract

Indonesia is an agricultural country because most of the population works in the agricultural sector. One of them is from agricultural products, namely rice. The milled rice produces rice and rice husks. Rice is used by the people of Indonesia as a staple food. Meanwhile, rice husks and ashes have not been utilized optimally. Seeing the great potential of rice husk and ash, efforts have been made to optimize the use of rice husk and ash as composite materials. The research aimed to obtain tensile strength, bending strength and porosity analysis of each composite using 230 mesh size rice husk particles or rice husk ash. The different volume fraction variations are 25% rice husk particles or its ashes and 75% epoxy matrix for the first variation, while for the second variation, it is 40% rice husk particles or its ashes and 55% epoxy matrix. The process of making composite materials was carried out using the hand lay-up and vacuum bag method with the test sample size according to the test standards used, namely ASTM D3039 for tensile strength testing and ASTM D790-61 for bending strength testing. The results of the mechanical properties test obtained the greatest tensile strength value in the epoxy composite reinforced with rice husk ash (40% wt) of 12.73 MPa and the greatest bending strength was in the epoxy composite reinforced with rice husk (40% wt) of 63.87 MPa. Preliminary characterization of rice husk and ash-reinforced epoxy composites met SNI standards.
Evaluasi sifat mekanik baja paduan rendah bedasarkan komposisi kimia dan suhu perlakuan panas menggunakan teknik exploratory data analysis (EDA) Leni, D.; Earnestly, F.; Sumiati, R.; Adriansyah, A.; Kusuma, Y.P.
Dinamika Teknik Mesin Vol 13, No 1 (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.v13i1.624

Abstract

This research aims to evaluate the relationship between the chemical composition of low alloy steel, temperature, and the mechanical properties of low alloy steel using Exploratory Data Analysis (EDA) techniques. The low alloy steel dataset is visualized using a correlation heat map, which shows a relationship between the mechanical properties of low alloy steel and its chemical composition and heat treatment temperature. Based on the results of the correlation heat map, an evaluation is carried out using scatterplots. The visualization results with scatterplots show a trend line indicating a linear relationship between YS and the elements V, Ni, and Mn, as well as a positive relationship between TS and V. In addition, there are determination coefficients (R²) that show how well the trend line can explain the variation of the data. The R² values obtained for V are 0.405, Ni is 0.226, Mn is 0.159, and Mo is 0.130, while El and RA have a positive correlation with temperature with R²values of 0.166 and 0.320, respectively. It can be concluded that the evaluation results using scatterplots and R² show that variations in chemical composition and heat treatment temperature affect the mechanical properties of low alloy steel. The correlations that occur between these variables can help in determining the pattern of the relationship and evaluating how well the trend line can explain the variation of the data. The use of correlation heat maps and scatter plots can help in decision-making and developing low-alloy steel materials that meet specific needs.
Evaluation of the temperature of the rotary dryer with LPG fuel in drying cherry coffee Alit, I.B.; Susana, I.G.B.; Adhi, I.G.A.K.C.; Mulyanto, A.
Dinamika Teknik Mesin Vol 15, No 1 (2025): 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.v15i1.968

Abstract

Utilization of rotary dryers with liquefied petroleum gas (LPG) energy sources as an alternative to solar drying, which is highly dependent on the weather. This dryer is applied to small farmers to dry cherry coffee. The results of the study showed that the drying temperature reached an average of 63.92oC to dry a sample of 10 kg of cherry coffee. From testing, this sample still produced a reasonably high outlet temperature of the drying chamber, which was an average of 62.07oC. From this condition, it is possible to increase the amount of cherry coffee to be dried, and further testing is needed. LPG-based rotary dryers are very easy for small farmers. The drying process can be carried out all the time because it does not depend on the weather. In addition, LPG in Indonesia for small farmers is still subsidized, so it is economically affordable. The shorter drying time than solar drying allows small farmers to carry out their production process sustainably. In 20 hours of testing, it was able to reduce the moisture content from 62.84% to 9.95%.
Pengaruh suhu udara masuk terhadap massa air yang dihasilkan pada alat pemanen air sederhana Mirmanto, M.; Nurpatria, N.; Hendra, J.K.
Dinamika Teknik Mesin Vol 13, No 1 (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.v13i1.617

Abstract

An experimental investigation was performed to obtain the effect of air temperatures on the freshwater production of a simple water harvester. The amount of freshwater mass production depends on several variables, e.g. intake air temperature. For this reason, his study examined the relationship between the intake air temperature and the mass of freshwater production. The research was conducted experimentally with R134a refrigerant as the working fluid and the intake air temperatures tested were 30°C, 35°C, and 40°C. The results show that the highest freshwater mass production was 0.340 kg at the intake air temperature of 30°C. Meanwhile, the highest coefficient of performance was 9.12 at the same intake air temperature and the highest total heat transfer rate was 184.16 W at the intake air temperature of 40°C. The effect of the intake air temperature on the mass of water, coefficient of performance and the total heat transfer rate was not clear. 
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 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.v12i1.511

Abstract

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%.
Pengaruh variasi aliran udara terhadap optimasi daya panel surya Pido, R.; Rahmat, B.H.; Wawan, R.; Rianto, D.R.
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.v13i2.661

Abstract

Solar panels are one of the most popular renewable energy technologies in this modern era. To optimize the performance of solar panels, many studies have been conducted to understand and improve the factors that affect the power generated by solar panels. In this experiment, the aim is to analyze the temperature setting for cooling solar panels using variations in air velocity to increase the performance of solar panels. In this study, solar panels were tested with variations in fluid flow velocity of 6.0 m/s, 5.5 m/s, and 4.4 m/s with an inclination angle of 15˚ solar panels facing north. with 60-minute intervals. The air blower is combined with an anemometer to provide variable air velocity for panel cooling. From the results of solar panel testing the maximum power generated at a wind speed of 4.4 m/s is 47.40 W, the power generated at a wind speed of 5.5 m/s is 47.55 W, and the power generated at a wind speed of 6 .0 m/s the maximum power generated is 48.65 watts. While the maximum efficiency produced at a wind speed of 4.4 m/s is 4.23%, and the minimum efficiency produced is 1.87%, the average efficiency is 26.56%. at a wind speed of 5.5 m/s, the maximum efficiency produced is 44.6%, the minimum efficiency is 1.95%, and the average efficiency is 27.86%. at a wind speed of 6.0 m/s, the maximum efficiency produced is 4.79%, the minimum efficiency is 2.07%, and the average efficiency is 29.29%.

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