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Redaksi International Journal of Mechanical Engineering Technologies and Applications (MECHTA), Jurusan Teknik Mesin Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang, Jawa Timur Indonesia 65145
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International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Published by Universitas Brawijaya
ISSN : -     EISSN : 27223213     DOI : https://doi.org/10.21776/ub.mechta
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering
International Journal of Mechanical Engineering Technologies and Applications (MECHTA) is published by Mechanical Engineering Department, Engineering Faculty, Brawijaya University, Malang, East Java, Indonesia. MECHTA is an open-access peer-reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. MECHTA accepts submissions from all over the world, especially from Indonesia. MECHTA aims to provide a forum for international academicians, researchers, and practitioners on mechanical engineering to publish the original articles. All accepted articles will be published and will be freely available to all readers with worldwide visibility and coverage. The scope of MECHTA is specific topics issues in mechanical engineering such as design, energy conversion, manufacture, and metallurgy. All articles submitted to this journal can be written in the English Language.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 71 Documents
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Participatory Ergonomics in Industrially Developing Countries: A Literature Review Priyoko Prayitnoadi R; Glyn Lawson; Setia Hermawati; Brendan Ryan
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.01.8

Abstract

Participatory ergonomics (PE), the origins of which can be traced back to the western ergonomics approach, is an approach that focuses on involving workers to improve safety and health at their workplace. This paper has presented a literature review of studies concerning PE, the methodological approaches used to study PE and PE in industrial developing countries (IDCs). The paper has also explained factors which would seem to pose an extra challenge in applying PE in IDCs and Indonesia. The purpose of this was to provide the reader with a view of how the development of participatory ergonomics today possibly can help solve the problem of occupational safety in small-medium size enterprises (SMEs) in Indonesia.
The Application of SWOT-AHP Combination in Small-Medium Enterprises (SMEs): A Literature Review 2010-2020 Mutiara Dicinta; Baju Bawono; Bernadus Kristyanto
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.01.3

Abstract

This study discusses two cases of combined use of SWOT-AHP in SMEs from outside Indonesia. The journals studied were journals published in the last 10 years, namely from 2010-2020. This study explains the combined use of SWOT-AHP abroad and domestically (Indonesia) and further discusses the benefits and challenges in the combined implementation of the SWOT-AHP method in SMEs. This research can be a reference in subsequent studies that apply the combined SWOT-AHP based on the potential and challenges of using the combined SWOT-AHP.
The Influence of Leachate Water on Corrosion Rate of Mild Steel Plate Abdul Ghofur; Dhonie Adetya Rachman; Muhammad Mochtar Lutfi; Fathur Rahman
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.7

Abstract

Leachate water from final waste landfill (Tempat Pembuangan Akhir, TPA) contains harmful substances for the environment and living organisms. Furthermore, the leachate water can deteriorate equipment buried near TPA, e.g. buried water pipe. This work investigated the corrosion rate of mild steel SPCC SD after immersion in leachate water of TPA Gunung Kupang and Cahaya Kencana located in South Kalimantan. The steel plate immersion into leachate water was worked out in 3 different cases. The first case was 2 weeks immersion in leachate water followed by 1 week contact with ambient air. In the second case, steel plate was immersed in leachate water for 1 week and then 2 weeks in direct contact with ambient air. The last one was steel plate immersion in leachate water for 3 weeks without any direct contact with ambient air. The investigation shows that longer contact duration between wet steel surface, after immersion in leachate water, with ambient air increases the corrosion rate. The investigation shows also that the corrosion rate due to leachate water from Gunung Kupang landfill is higher than that of Cahaya Kencana landfill. Corrosion rate for TPA Gunung Kupang case varies from 0.441 to 0.718 mmpy. Meanwhile, corrosion rate for TPA Cahaya Kencana varies from 0.131 to 0.495 mmpy. This is due to lower pH of leachate water from TPA Mount Kupang.
The Effect of Solution Treatment on Mechanical Properties and Micro Structure of Zr-10Ti-Sn Alloy for Screw Dental Implant Application Deva Ayu Utami; R. Henny Mulyani; Djoko Hadi Prajitno
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.2

Abstract

The research was to investigate the effect of solution treatment on the mechanical properties and microstructure of Zr-10Ti-Sn alloy for dental implant biomaterials. The addition of titanium as a material has good corrosion resistance and stannum as a material has a low modulus young and can increase hardness of the alloy in accordance with the material criteria as a dental implant, which must have good corrosion resistance and good mechanical properties. Zr -10Ti-xSn alloy (x = 0, 2, and 4% wt) were subjected to solution treatment with temperature variations of 900oC, 1000oC and 1100oC with water quenching. The results  is increase in stannum content can also increase the hardness because stannum can inhibit the enlargement of grain boundaries and the microstructure is more homogeneous and tends to be smaller with an uniaxial shape. Stannum as alpha stabilizer will form a hard alpha phase. Micro Vickers hardness test with the highest hardness value of 601,438 HV alloy Zr-10Ti-2Sn with 900oC solution treatment, phases formed were α-Zr and β-Zr and intermetallic Zr4Sn and SnTi3 Zr-10Ti-4Sn alloys which were identified using X-Ray Diffraction (XRD).
Risk Analysis in Halal Fast Food Supply Chain Restaurant using Risk Map Method Putri Amalia; Nurfitria Handayani; Maeva Apriza; Elisa Kusrini
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.01.9

Abstract

Halal food has increasing demand in recent years. Many countries are promoting its tourism and culinary by providing halal status. In order to implement Halal system which is used to obtain Halal status, the culinary or restaurant company should accomplish several requirements that covers from many stakeholders in their supply chain management such as supplier, logistics, and production process. Hence, there are some risks obtained in conducting Halal supply chain system. The risks found at this research are from its business process which is procurement, raw material delivery, inventory, production, and consumer. From those processes, the risks discovered are listed and assigned with their severity and probability, ended up in Risk Priority Index. The risks then ranked and mapped in the risk map in order to know which risks that has high impacts. Some responses are proposed to overcome the critical risks, such as sanitary checking before delivered to the customer, make some chambers, and make SOP related to hygiene of the kitchen.
Business Design and Feasibility Of Doria Cafe Start Up Supported by Website Application in Bandung City Fahira Alyayusi Litamurni; Endang Chumaidiyah
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.002.01.4

Abstract

Patria Donut is one of the start up businesses home-scale donut making established in 2018. Patria Donut produce in accordance with the number of orders from distributors and only in accordance with the desire to generate sales for end buyers. The location is difficult to reach by the customer makes this business unpopular. Seeing this fact, the owner wants to expand his business by opening a cafe in a more strategic location, in Jalan Lombok. We should do feasibility analysis by opening this café. The market is conducted by spreading questionnaires to 100 respondents (target 16-39 years) in Bandung. The results showed a potential market of 86%, 98% available market, and the target market the company aimed at 0.8% of the available market. Meanwhile technical aspects and financial aspects based on secondary data from various sources. The financial calculation obtained from the NVP value for 2020-2024 are Rp 229.258.502,00, the IRR percentage is 26,69%, and PBP is 4 years and 4 months. IRR obtained is greater than the MARR value of 9.95% and NVP is positive. From these parameters, the opening of the Doria Cafe on Lombok Street, Bandung was feasible. We used website to support this business design.
Design of Automatic Feeder for Shrimp Farming Based on Internet of Things Technology Ilham Arditya; Tri Ari Setyastuti; Fikri Islamudin; Iskandar Dinata
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.8

Abstract

In shrimp farming, feeding is an important activity to achieve good shrimp growth. Manual feeding manually using hand is less effective due to unequal food distribution. Thus, an automatic feeder is required to dispense feed at predetermined time. The advantages of automatic feeder are cost-effective, low labour requirement, and can be applicable for large volumes of feed. Design of automatic feeder machine can influence the capacity and time controlling of the feeder. In this research, the automatic feeder was designed using a controlling time system based on Internet of Things (IoT) technology. During plant trial, The automatic feeding was scheduled at 7 am, 11 am, 4 pm, and 8 pm. This machine could throw shrimp food homogeneously up to 10 m far for 2,500 m2 pond area. In shrimp farming, distribution of shrimp food in predetermined time becomes an important rule to achieve good shrimp growth.
Effect of Biodiesel B100 and Ethanol Blends on the Performance of Small Diesel Engine Alfian Firdiansyah; Nasrul Ilminnafik; Agus Triono; Muh Nurkoyim Kustanto
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.3

Abstract

A small diesel engine is a machine that has high efficiency but causes a high level of pollution. The most widely used fuel so far is fossil energy which is unrenewable energy. The fruit of the Calophyllum inophyllum plant has great potential to be developed as alternative energy for small diesel engines. In this study, the test fuel used was D100, B100, E5, E10, and E15. The small engine diesel used TG-R180 Diesel with a compression ratio of 20:1 at engine turns 1500, 1800, 2100, and 2400 rpm, and the braking load at a constant prony disc brake is 1,5 kg/cm2. The result of the study using E10 fuel can improve engine performance and can reduce the opacity of the exhaust gas. The highest power in the D100 fuel at 2100 rpm is 8,06 PS. The highest thermal efficiency of E10 fuel is 50,29%. The use of Calophyllum inophyllum biodiesel (B100) can reduce exhaust gas opacity in small diesel engines when compared to the use of D100. E10 fuel has the lowest exhaust gas opacity rate of 4,1%.
Conceptual Framework Performance Contributor from Internal Organizations of Corporate Social Responsibility Activities Gogor Arif Handiwibowo; Rini Puji Astuti; Rita Ambarwati
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.01.10

Abstract

In this 20th century era, the business environment is more demanding that a business organization not only have a profit orientation. However, aspects of the impact on the environment and surrounding communities must also receive adequate attention in line with the increasing quantity and quality of business organizations. The concept of sustainable development is proposed to be a concept that tries to provide a balanced effect between financial performance factors, community welfare factors and environmental sustainability factors. In balancing the three factors above, CSR (Corporate Social Responsibility) activities of business organizations are expected to be the answer to the stigma that business organizations are only looking for profit. This paper will describe several hypotheses as well as a conceptual framework of factors originating from internal business organizations that have an impact on the performance of CSR activities. There are four factors that are proposed to be a hypothesis from the internal organization that must be fulfilled so that CSR activities show their performance. The four factors are fulfilment of human resources, fulfilment of the business organization's strategic vision, fulfilment of operating system implementation, and fulfilment of the business organization's financial capability.
Designing Strategy of Indonesia Port Car Terminal Based on Analysis of Profitability Ratio Before And After the IPO Hanif Insan Ilman; Endang Chumaidiyah; Rita Zulbetti
International Journal of Mechanical Engineering Technologies and Applications Vol 2, No 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.01.5

Abstract

Indonesia has managed to get out of the low-income zone and into the middle-income zone. However, Indonesia still has a challenge that is to get out of the middle-income trap zone. These challenges must be resolved by improving the performance of BUMN. Indonesia Port Center Terminal is one of the BUMN subsidiary companies precisely a subsidiary of Indonesia Port Center II (Persero). The purpose of the study was to determine differences in performance indicators before and after the IPO in profitability ratios, namely ROA, ROE, OPM, and NPM and recommendations for performance improvement strategies. The data obtained is based on the 2016-2019 financial statements and questionnaires to expert judgment. The method used is the Wilcoxon Paired t-Test, AHP, and SWOT test. The results of the Wilcoxon Paired t-Test test before and after the IPO were no difference. The results of the company's SWOT analysis are in the position of quadrant I (strength and opportunities). The recommended strategy applied in this condition is to support an aggressive growth policy that prioritizes the strengths and opportunities of the company.

Page 2 of 8 | Total Record : 71

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