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Dony Susandi
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J-ENSITEC (Journal of Engineering and Sustainable Technology)
Published by Universitas Majalengka
ISSN : 24076007     EISSN : 2477359X     DOI : http://dx.doi.org/10.31949/j-ensitec
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Industrial & Manufacturing Engineering Mechanical Engineering
J-ENSITEC (Journal Of Engineering and Sustainable Technology) terbit 2 (dua) kali dalam setahun. Sejak 2014, J-ENSITEC (Journal Of Engineering and Sustainable Technology) terbit pada bulan Desember dan Mei. Isi jurnal membahas hasil penelitian di bidang Teknik Informatika, Teknik Sipil, Teknik Industri, Teknik Mesin.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 151 Documents
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OPTIMASI STRATEGI TOOLPATH CNC DENGAN GREY RELATIONAL ANALYSIS UNTUK MENINGKATKAN EFISIENSI PEMESINAN Sihmaulana Dwianto; Genarsih, Tunjung; Syaifur Rohman, Ardianto
J-ENSITEC Vol. 11 No. 02 (2025): June 2025
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v11i02.13808

Abstract

This study aims to optimize CNC toolpath strategies using Grey Relational Analysis (GRA) to enhance machining efficiency. Five toolpath strategies—Zigzag, Constant Overlap Spiral, Parallel Spiral, One Way, and True Spiral—are systematically evaluated based on spindle speed, feed rate, depth of cut, and step over, assessing their impact on machining performance.The machining process is conducted using a 3-axis CNC milling machine equipped with a 10 mm diameter endmill tool. Data collection is performed through Mastercam software, where numerical simulations precede the application of Grey Relational Coefficient (GRC) and Grey Relational Grade (GRG) computations to determine the optimal toolpath strategy.The results indicate that the Zigzag toolpath, configured with a spindle speed of 1300 RPM, feed rate of 700 mm/min, depth of cut of 0.8 mm, and step over of 8 mm, achieves the highest GRG value, signifying superior machining efficiency. Further analysis demonstrates that optimizing toolpath parameters significantly enhances process stability, reduces energy consumption, and shortens production cycle time, contributing to increased productivity in CNC machining operations. These findings provide valuable insights for the manufacturing industry, presenting a data-driven framework for selecting optimal toolpath strategies to improve machining precision, operational cost efficiency, and sustainable production practices.
ANALISIS SENTIMENT MASYARAKAT TERHADAP PABRIK DI JAWA BARAT SEBAGAI DASAR STRATEGI PENINGKATAN CITRA INDUSTRI DI MAJALENGKA Kusumadewi, Intan
J-ENSITEC Vol. 11 No. 02 (2025): June 2025
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v11i02.14526

Abstract

The rapid development of the new industrial estate in Majalengka requires the support of a good image from the local community. This study aims to assess public sentiment towards factories in West Java as a basis for formulating strategies to improve the image of industry in Majalengka. The Support Vector Machine (SVM) method was applied to classify the sentiment of YouTube comments relating to the factory, after a process of data collection, text preprocessing, and lexicon-based sentiment labelling. The main findings indicated that people's sentiments were distributed in proportions of approximately 30% negative, 35% neutral, and 35% positive. The accuracy of the SVM model was recorded at 78.48%, while the confusion matrix indicated adequate classification performance of the sentiments. matrix indicates adequate classification performance for negative, neutral, and positive sentiments. negative, neutral, and positive sentiments. This finding indicates that there is a significant negative sentiment towards the significant negative sentiment towards the industry, although it is not dominant. In conclusion, sentiment analysis conducted through social media can serve as a basis for formulating public relations and Corporate Social Responsibility (CSR) strategies. Corporate Social Responsibility (CSR) strategies in an effort to improve the industry's image. The industry and the government are advised to improve clear communication and responsive CSR programmes, with the aim of reducing negative sentiment and strengthening public trust. strengthen public trust.
PENGARUH ADITIF ADERCO TERHADAP SPECIFIC FUEL CONSUMPTION (SFC) PADA MESIN DIESEL DI PLTD LUWUK BANGGAI SULAWESI TENGAH Syaiful Anwar, Moch.; Shaleh, Mochamad
J-ENSITEC (Journal of Engineering and Sustainable Technology) Vol. 11 No. 02 (2025): June 2025
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v11i02.18156

Abstract

Electricity demand in Luwuk Banggai Sulawesi Tengah has continued to increase, requiring efficient operation of diesel power plants. The use of Biodiesel B35 as an alternative fuel introduces challenges related to lower fuel efficiency compared to conventional diesel. This study aims to evaluate the effect of Aderco additive on improving fuel efficiency in diesel engines at Luwuk Diesel Power Plant. A field experimental method was applied using a pre-test and post-test design by comparing engine performance before and after additive application. The analysis focuses on Specific Fuel Consumption as the main performance indicator, calculated from fuel consumption and power output under similar operating conditions. The results show that the use of Aderco additive reduces Specific Fuel Consumption in all tested units. Medium-speed engines demonstrate a more significant improvement, with a maximum reduction of 4.68%, while high-speed engines show a smaller decrease ranging from 1.02% to 1.35%. These findings indicate that the effectiveness of the additive is influenced by engine speed and combustion duration. In conclusion, the Aderco additive effectively improves fuel efficiency in diesel engines, particularly in medium-speed units, without requiring modifications to engine design.
ANALISIS KONSUMSI BAHAN BAKAR DAN EFISIENSI BOILER MENGGUNAKAN FUEL OIL ADDITIVE Syaiful Anwar, Moch.; Shaleh, Mochamad
J-ENSITEC (Journal of Engineering and Sustainable Technology) Vol. 9 No. 02 (2023): June 2023
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v9i02.18207

Abstract

The increasing demand for electrical energy requires thermal power plants to improve operational efficiency while reducing fuel consumption and energy losses. This study investigates the effect of fuel oil additive on boiler efficiency and fuel utilization in a steam power plant system. The research applied an experimental quantitative approach using a comparative before–after method by evaluating boiler performance prior to and following the application of the additive. Operational data were collected directly from the plant monitoring system, including boiler load, fuel consumption, steam generation, flue gas conditions, and boiler efficiency parameters. Boiler efficiency calculations were conducted using the ASME PTC 4.1 input–output performance test method. The results indicate that the application of fuel oil additive improved boiler efficiency from 93.357% to 98.922%, representing an increase of 5.565%. In addition, the plant load increased from 79.50 MW to 81.00 MW after additive utilization. The improvement in performance is associated with better fuel atomization, enhanced combustion quality, and reduced heat losses during boiler operation. The findings demonstrate that the use of fuel oil additive can contribute to more efficient boiler operation, lower fuel consumption, and improved thermal performance in steam power plants.
ANALISIS TEKANAN PEMBAKARAN PADA MESIN DIESEL MENGGUNAKAN METODE PRESSURE COMBUSTION ANALYSIS Syaiful Anwar, Moch.; Shaleh, Mochamad
J-ENSITEC (Journal of Engineering and Sustainable Technology) Vol. 10 No. 02 (2024): June 2024
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v10i02.18226

Abstract

His study aims to analyze combustion pressure characteristics in a diesel engine using the Pressure Combustion Analysis (PCA) method. The research employed a quantitative descriptive approach through direct measurement of combustion pressure in each cylinder of a Sulzer 12 ZV 40/48 diesel engine under constant operating load conditions. The analyzed parameters included peak combustion pressure, combustion pressure balance, ignition delay, pressure at crank angle 340°, and indications of abnormal combustion. Data acquisition was conducted using Haliza Machinery & Diesel Engine Analyzer and processed using SoftHaliza software. The results showed that the average combustion pressure reached 59.33 bar with pressure deviations among cylinders remaining below the allowable limit, indicating that the overall combustion condition was still within normal operating standards. Comparative analysis before and after the application of fuel additive demonstrated an increase in average combustion pressure from 57.91 bar to 59.33 bar, indicating improved combustion performance and smoother combustion characteristics. However, several cylinders still exhibited indications of incomplete combustion and combustion pressure imbalance caused by variations in fuel injection and combustion quality. In addition, the PCA method proved effective for early detection of ignition delay, combustion abnormalities, and potential cylinder performance degradation. Therefore, Pressure Combustion Analysis can be applied as an effective predictive maintenance method to improve diesel engine reliability and operational efficiency.
Analysis Of The Effectiveness Of The Use Of Local Government Information Systems (SIPD) In The Budget Preparation Process (APBD) At The National Unity And Political Agency Of South Sumatra Province Didik Prayogi; Nurul Huda
J-ENSITEC Vol. 12 No. 02 (2026): June 2026
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v12i02.17559

Abstract

The implementation of the Regional Government Information System (SIPD) represents a fundamental paradigm shift in the digital transformation of Indonesian local governance, specifically designed to enhance effectiveness, efficiency, and transparency in the management of the Regional Revenue and Expenditure Budget (APBD). This study aims to conduct a comprehensive analysis of the effectiveness of SIPD implementation in the APBD preparation process at the National Unity and Politics Agency (Badan Kesbangpol) of South Sumatra Province. Utilizing the DeLone and McLean Information Systems Success Model as the theoretical framework, this research evaluates six core dimensions: System Quality, Information Quality, System Use, User Satisfaction, Individual Impact, and Organizational Impact. A quantitative approach was employed using a survey method with 40 respondents comprising budget drafting staff, budget analysts, treasurers, and IT support teams. The data were analyzed using descriptive statistics to determine the level of effectiveness and identify inhibiting factors. The results indicate that the overall effectiveness of SIPD is categorized as "Effective Enough" with an average score of 3.22 on a Likert scale of 1-5. The System Use dimension achieved the highest score (3.48), reflecting a high level of user adoption due to mandatory regulations, while the System Quality dimension received the lowest score (2.93), highlighting significant challenges in IT infrastructure, system response time, and feature customization. The study concludes that while SIPD has been successfully integrated into the agency's workflow and positively impacts organizational accountability, urgent improvements are required in technical infrastructure, user training, and feature customization to optimize its potential.
Implementation Of Long Short-Term Memory (LSTM) For Routing Optimization In Ad Hoc Networks (FANETS) Mastang; Muhammad Ali Pahmi
J-ENSITEC Vol. 12 No. 02 (2026): June 2026
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v12i02.17890

Abstract

Flying Ad Hoc Network (FANET) is a mobile wireless network formed by multiple Unmanned Aerial Vehicles (UAVs) with highly dynamic topology. This rapid topology change makes routing more complex than in conventional Mobile Ad Hoc Networks, since UAV movement can continuously affect link quality, disconnection probability, and packet delivery delay. This study applies Long Short-Term Memory (LSTM) to optimize FANET routing using time-series network metrics, including signal-to-noise ratio, delay, throughput, energy, packet loss rate, jitter, and bandwidth utilization. The LSTM model learns temporal relationships among network conditions, enabling next-hop selection to consider not only current link status but also its evolution over time. The proposed method is evaluated against AODV, OLSR, and the Stochastic Probability Algorithm (SPA) using Packet Delivery Ratio (PDR) and end-to-end delay under different numbers of UAVs and UAV speeds. Results show that LSTM consistently achieves the highest PDR across all scenarios. For UAV number variation, LSTM improves PDR from 0.166 to 0.380, outperforming AODV, OLSR, and SPA. For UAV speed variation, LSTM maintains PDR between 0.89 and 0.73, remaining superior to the comparison methods. In addition, LSTM produces the lowest delay, ranging from 0.60 to 0.70 s for UAV number variation and 0.35 to 0.61 s for UAV speed variation. These results demonstrate that LSTM effectively captures the temporal dynamics of FANET and is suitable for adaptive routing support.
Design Of A Coconut Shell Charcoal Briquette Mixer Machine With A Capacity Of 50kg Asep Rachmat; Gilang dwi Saputra; Alwi Albaar
J-ENSITEC Vol. 12 No. 02 (2026): June 2026
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v12i02.17946

Abstract

Coconut shell waste has not been optimally utilized, despite its potential to be processed into charcoal briquettes with higher economic value. One of the critical stages in briquette production is the mixing process, which requires an efficient and reliable mixing system to ensure homogeneity. This study aims to design a coconut shell charcoal briquette mixer machine with a capacity of 50 kg. The design methodology includes determining the mixer drum capacity, frame dimensions, and shaft specifications, followed by mechanical analysis to evaluate the torsional load acting on the shaft. Simulation analysis was conducted to assess the structural performance of the machine. The results indicate that the maximum stress due to torsional loading is 1.714 × 10⁵ Pa, while the resulting deformation is 3.306 × 10⁻⁵ m. These results demonstrate that the designed mixer machine meets the required safety criteria and is capable of operating effectively in the briquette mixing process. The proposed design is expected to improve efficiency and consistency in coconut shell charcoal briquette production.
The Effect Of Smk3 Implementation, Safety Culture And Project Leadership On Ohs Performance In Construction Projects In Dili City, Timor Leste Pedro Maria Lopes Pacheco; Anton Soekiman; Chandra Afriade Siregar
J-ENSITEC Vol. 12 No. 02 (2026): June 2026
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v12i02.17972

Abstract

The construction industry is widely recognized as one of the sectors with the highest levels of occupational risk, particularly in developing countries such as Timor Leste. The implementation of the Occupational Health and Safety Management System (OHSMS/SMK3) in construction projects is often limited to administrative compliance and is not fully supported by a strong safety culture and effective project leadership, resulting in suboptimal Occupational Health and Safety (OHS) performance. Therefore, understanding the interaction among these factors is essential to improving safety outcomes in construction environments. This study aims to analyze the influence of OHSMS implementation, safety culture, and project leadership on OHS performance in construction projects located in Dili City, Timor Leste. The research also examines both direct and indirect relationships among variables, including the mediating role of safety culture and OHSMS implementation. A quantitative research approach was employed using a survey method, in which structured questionnaires were distributed to construction project personnel directly involved in OHS activities. The collected data were analyzed using the Partial Least Square–Structural Equation Modeling (PLS-SEM) technique to evaluate the measurement and structural models. The findings reveal that OHSMS implementation and safety culture have significant positive effects on OHS performance. Project leadership demonstrates a crucial role in strengthening safety culture and enhancing the implementation of OHSMS, while also exerting an indirect influence on OHS performance through these mediating variables.  Overall, the results emphasize the importance of integrating systematic, cultural, and leadership approaches to achieve sustainable improvements in occupational health and safety performance within construction projects in Timor Leste.
Design and Development of Ariesta Hotel Reservation Information System Based Website Using Waterfall Method Elsa Benolon; Yoseph Pius Kurniawan Kelen; Siprianus Septian Manek
J-ENSITEC Vol. 12 No. 02 (2026): June 2026
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v12i02.18002

Abstract

The limitations of the manual reservation system at Hotel Ariesta Kefamenanu result in inefficient information delivery, a high risk of recording errors, and potential double bookings. This study aims to develop a web-based reservation information system to improve service efficiency and data accuracy. The Waterfall method is applied to ensure a structured and systematic development process in accordance with user requirements. The system is developed using the Bootstrap framework to provide a responsive interface accessible across multiple devices. The results indicate that the proposed system reduces the reservation processing time and minimizes data recording errors compared to the previous manual system. In addition, the system improves the accuracy of reservation data management and enables real-time access to hotel information, including room types, facilities, and pricing. The implementation of this system also enhances promotional effectiveness and expands customer reach through continuous online accessibility. Therefore, the developed system serves as an effective solution to support digital transformation and improve operational performance at Hotel Ariesta Kefamenanu.

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