Journal of Mechanical, Civil and Industrial Engineering

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EISSN : 2710-1436
Total articles ≅ 4
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, Isdaryanto Iskandar
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 01-16; https://doi.org/10.32996/jmcie.2021.2.2.1

Abstract:
Pellets are compressed feed, compacted through a mechanical process. Pellets can be molded in the form of lumps and small cylinders with different diameters, lengths, and levels of strength. The right moisture content value will maximize the quality of the pellets and increase the value of the Pellet Durability Index(PDI). Many factors affect the moisture content in the feed such as changing the steam pressure configuration, adding moisture to the mixing process, changing the retention time configuration, and other methods. The method tested was to provide variations on the configuration of retention time and steam pressure on the Pressure Reducing Valve (PRV) which aims to determine the increase in moisture content in the feed. Variations of retention time configuration tested were 50 seconds, 55 seconds, 60 seconds, 65 seconds, 70 seconds with variations in the Steam pressure configuration in the test were 1.4 bar and 1.6 bar. The test results prove that the retention time of 65 seconds with a steam pressure of 1.4 bar is the best configuration with an increase in moisture content of 2.67% with a difference in moisture content of bagging to the mixing of -0.46.
, Ruruh Prasetya
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 22-29; https://doi.org/10.32996/jmcie.2021.2.2.4

Abstract:
The steel plate market in the Batam Free Trade Zone is very large, namely 75% of the Indonesian market share. PT Krakatau Steel's steel plate products are not competitive in the Batam Free Trade Area, especially in terms of price and long delivery times. So, a strategy is needed to increase competitiveness. This type of research is a quasi-qualitative research method with interviews, questionnaires, observation, and literature study. In this study, there are two problem formulations, namely how to determine the criteria for competitiveness and how to improve the strategy for increasing the competitiveness of PT Krakatau Steel's steel plate in the Batam Free Trade Area. In determining the criteria for competitiveness, AHP analysis is used. For strategies to increase competitiveness using the SWOT-AHP analysis. The results showed that the criteria affecting the competitiveness of steel were Manufacture Strategy with a weighting value of 0.526 with sub-criteria for cost, quality, delivery, and flexibility. The SWOT analysis shows that the strategy currently used by PT Krakatau Steel is SO. Based on the results of the SWOT-AHP analysis research, it was found that the competitiveness of PT Krakatau Steel could still be improved with the ST strategy which was more relevant to the situation in the Batam Free Trade Area.
, Isdaryanto Iskandar
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 07-16; https://doi.org/10.32996/jmcie.2021.2.2.2

Abstract:
XXX is one of the pioneers and market leaders of building materials companies in Indonesia. Looking at the performance over the last five years PT. XXX is experiencing a decline in production capacity, although judging from the market share its products are still quite attractive to customers. This means that PT. XXX failed to grow its business even in an effort to maintain it, while the building materials industry continued to grow. The problem is how this can happen and what steps a company must take to return its business conditions for the better. The purpose of this study is to get an overview of the strategic aspects of the company with the SPACE Matrix Model and its dimensions including; financial strength, competitive advantage, industrial-strength, and environmental stability. By calculating the average value of each aspect, then the result is used to determine the position of PT. XXX in the SPACE Matrix. Based on the results of the study, the strategic position of PT. XXX is in the Competitive Quadrant. Therefore, the recommended strategy is integration strategy, intensive strategy, or collaboration (joint venture). By using the recommended strategy, it is hoped that PT.XXX will be able to restore its business viability and return to being the market leader in building materials products.
, Fatchur Rohman, Mimien Henie Irawati, Bagus Priambodo, Farid Akhasani, Sofia Ery Rahay
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 17-21; https://doi.org/10.32996/jmcie.2021.2.2.3

Abstract:
Education during the pandemic experiences many obstacles that hinder all learning processes. Learning in ecology courses, in particular, has problems because it has one of the activities students have to go to the environment to make observations. The environment referred to here is the Brantas River. Brantas River is the largest river in East Java. However, the river is polluted due to human activities around the river. This phenomenon is intended to be presented as a lesson material for students to be able to improve environmental attitudes. Augmented reality assistance is useful for moving the environment that will be the subject of student observation during virtual learning.
, Timbul Siahaan, Pujo Widodo
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 30-33; https://doi.org/10.32996/jmcie.2021.2.2.5

Abstract:
Designing a machine relates to the human factor. The size of the human body and machine can cause problems due to mismatch. So that, size of the human body into consideration in the design of the machine is very important. The shape and size of the machine that is not suitable will cause difficulties for the operator in carrying out their activities. The purpose of this research was to design propellant cutting machine sizes based on anthropometry. The research method is based on the anthropometry of Indonesia. Anthropometry tools obtained the size of the minimum height of the machine, the maximum width of the machine, and also the maximum height of the table. The Result dimension of the height of the machine was 1792 mm and the width of the machine was 300 mm while the height of the machine table was 932 mm. The position of the operator control was 95mm from the floor.
, Szavai Szabolcs
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 01-05; https://doi.org/10.32996/jmcie.2021.2.1.1

Abstract:
The Gurson – Tvergaard – Needleman (GTN) mechanical model is widely used to predict the failure of materials based on laboratory specimens, direct identification of Gurson – Tvergaard – Needleman parameters is not easy and time-consuming, and the most used method to determine them is the combination between the experimental results and those of the finite elements, the process consists of repeating the simulations several times until the simulation data matches the experimental data obtained at the specimen level.This article aims to find GTN parameters for the Compact Tension (CT) and Single Edge Tensile Test (SENT) specimen based on the Notch Specimen (NT) using the Artificial Neural Network (ANN) approach. . This work presents how the ANN could help us determine the parameters of GTN in a very short period of time. The results obtained show that ANN is an excellent tool for determining GTN parameters.
, Abdullah Haidari, Srishti Saha, Titas Paul
Journal of Mechanical, Civil and Industrial Engineering, Volume 2, pp 06-10; https://doi.org/10.32996/jmcie.2021.2.1.2

Abstract:
Due to the rapid development of technology, the use of numerically controlled machines in the industry is increasing. The main idea behind this paper is computer-aided design (CAD) based low-cost computer numerical control 2D drawing robot that can accurately draw complex circuits, diagrams, logos, etc. The system is created using open-source hardware and software, which makes it available at a low cost. The open-source LibreCAD application has been used for computer-aided design. Geometric data of a CAD model is converted to coordinate points using the python-based F-Engrave application. This system uses the Arduino UNO board as a signal generator of the universal g-code sender without compromising the performance. The proposed drawing robot is designed as a low-cost robot for educational purposes and aims to increase the student's interest in robotics and computer-aided design (CAD) skills to the next level. The drawing robot structure has been developed, and it meets the requirements of low cost with satisfactory experimental results.
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