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Sugeng Hadi Susilo
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Editorial Staff Asian Journal Scieence and Engineering Jl. Soekarno Hatta No.9, Jatimulyo, Kec. Lowokwaru, Kota Malang, Jawa Timur 65141
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Asian Journal Science and Engineering
Published by CV. Creative Tugu Pena
ISSN : 29636752     EISSN : 29636752     DOI : http://dx.doi.org/10.51278/ajse.v1i2.545
Core Subject : Science, Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Asian Journal Science and Engineering publishes all those best ideas from the science, which can be introduced in the engineering. Since, obtaining the high-quality, competitive products is based on introducing high technologies from various independent spheres of scientific researches, but united by a common end result - a finished high-technology product. The purpose of this journal is to publish quality articles dedicated to the scientific research development that focuses Mechanical Engineering, Civil Engineering, Chemical Cngineering, Electrical Engineering, Engineering Physics
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 44 Documents
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The Effect of Variations of Magnetic Fields on Fuel Channels on The Efficiency of Consumption and Exhaust Emissions In Gasoline Engines Hadi Susilo, Sugeng; Faizal, Elka; Pebrianti, Dwi
Asian Journal Science and Engineering Vol. 3 No. 2 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i2.1690

Abstract

Research on the "Effect of Magnetic Field Variations on Fuel Channels on the Efficiency of Consumption and Exhaust Emissions on Gasoline Engines" focus on how magnetic fields with various forces can increase the efficiency of fuel consumption and reduce exhaust gas emissions in gasoline -fueled engines. In this study, the magnetic field was applied to the fuel channel with the aim of affecting the combustion process in the engine. The strength variations of the magnetic field used are expected to optimize fuel combustion, so that fuel consumption becomes more economical and exhaust emissions, such as oxygen (O₂), carbon monoxide (CO), carbon dioxide (Co₂), and hydrocarbons (HC), can minimized. The results showed that the application of magnetic fields has the potential to have a significant impact on engine efficiency, especially at certain rotation, which can create environmental benefits with cleaner gas emissions and reduce overall fuel consumption.
Surface Analysis and Material Elements in the Excavator Tooth Bucket which is affected by corrosion with the SEM and EDX method yudiyanto, eko; Susilo, Sugeng; Sulistyono, Sulistyono
Asian Journal Science and Engineering Vol. 3 No. 1 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i1.1761

Abstract

Corrosion in excavator tooth buckets is a major issue in the heavy equipment industry, especially in mining and construction. Exposure to water, humidity, and chemicals accelerates corrosion, reducing strength and wear resistance, which shortens component life and lowers operational efficiency. This study analyzes surface structure and material composition changes due to corrosion, aiming to enhance material durability through better selection and design. Using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX), corrosion effects on S45C steel were examined at up to 5000x magnification. The results show increased oxygen (O) from 3.56 WT% to 25.53 WT% and decreased iron (Fe) from 84.21 WT% to 59.35 WT%, indicating severe oxidation. Identified corrosion types include uniform and gap corrosion, highlighting the need for corrosion-resistant materials and protective coatings to improve excavator reliability
The effect of temperature and injection time on the injection molding process on the final weight of the mini tray product Hadi Susilo, Sugeng; Pebrianti, Dwi; Faizal, Elka
Asian Journal Science and Engineering Vol. 3 No. 1 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i1.1762

Abstract

Injection molding is an important process in plastic manufacturing, especially for mini tray production that requires stability and severe accuracy. Temperature and injection time affect product quality, including material distribution and possible defects. This study aims to analyze the effect of these two parameters on the final weight of the product and determine optimal arrangements to achieve consistent quality. This study uses an experimental method with independent variables in the form of temperature and injection time, as well as the dependent variable in the form of product weight. Data is collected through testing with KT-105 injection molding machine and analyzed using Minitab 19 software to test the relationship between variables statistically. The results showed that the temperature and time of injection had a significant effect on the weight of the mini tray. Anova analysis proves a strong relationship between these two parameters, with a p-value value <0.05
The influence of the hydrocarbon cracking system (HCS) on increased torque and reduction of exhaust emissions on a 4-step 1-cylinder gasoline motor Arif Nur Huda, muhammad; Hadi Susilo, Sugeng; Rohman, Fatkhur; Bin Abas, Mohammad Fadhil
Asian Journal Science and Engineering Vol. 3 No. 2 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i2.1763

Abstract

The automotive industry faces challenges in improving fuel efficiency and reducing exhaust emissions. One solution being developed is the Hydrocarbon Cracking System (HCS), which breaks down hydrocarbon molecules in fuel to enhance combustion efficiency. This study aims to analyze the effects of HCS on engine torque and exhaust emissions (CO, HC, and CO₂) in a four-stroke, single-cylinder gasoline engine. The research method involves an experimental factorial design of 6 × 2, testing torque and exhaust emissions at various engine speeds. Measurements were conducted using a dynamometer and a gas analyzer to compare standard conditions with HCS implementation. The results indicate that HCS increases engine torque by 3.40% and reduces CO and HC emissions by 28.12% and 54.35%, respectively. However, CO₂ emissions increased by 12.48%, indicating more complete combustion. Overall, HCS proves to enhance engine efficiency and reduce harmful emissions, making it a potential eco-friendly solution for motor vehicles.
The Utilization of Vertical Wind Turbines for Micro Electricity Generation Budi Riyanto; Abdi Seno; Naf'an Arifian; Sarifuddin
Asian Journal Science and Engineering Vol. 3 No. 1 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i1.1803

Abstract

This research is motivated by the rapidly increasing demand for electricity driven by modernization and industrialization, as well as by environmental challenges resulting from reliance on non-renewable fossil energy sources, thereby prompting the search for clean and efficient alternative energy. The aim of this study is to examine the potential and performance of vertical wind turbines as an innovative solution for micro power generation by assessing the efficiency of converting wind energy into electricity and evaluating its economic aspects. An observational research method was employed, incorporating literature review, team discussions, design processes, device construction, and the implementation of testing through both laboratory and field methods. The study was conducted at the Politeknik Pelayaran Sumatera Barat, where the turbine was installed on the roof of a classroom building in a coastal area, taking advantage of favorable geographic conditions and supportive wind characteristics. Data collection involved direct measurements of parameters such as wind speed, turbine and generator RPM, and electrical voltage over designated time intervals, thereby producing data on the variability and operational performance of the turbine. Results indicate that the vertical wind turbine is capable of generating electricity optimally despite fluctuations in wind speed, and it offers advantages in terms of installation flexibility, low operational costs, and energy efficiency with room for improvement. Consequently, the study recommends the development of enhanced aerodynamic designs and more optimal driving mechanisms to accommodate dynamic operational conditions, thereby facilitating the widespread implementation of this solution to support the decentralization of renewable energy systems, reduce reliance on fossil fuels, and strengthen the sustainability of electricity supply.
Occupational Safety, Health, and Awareness as Determinants of Productivity: A PLS-SEM Study of Construction Workers in Malang Fifi Damayanti; Suhudi; Sigit Febrianto, Redi
Asian Journal Science and Engineering Vol. 4 No. 1 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i1.1855

Abstract

This study investigates the influence of Occupational Safety and Health (OSH) practices—comprising Occupational Safety, Occupational Health, and OSH Awareness—on worker productivity within construction projects in Malang, Indonesia. Using a quantitative approach with survey data from 63 construction workers and analyzed through Partial Least Squares Structural Equation Modeling (PLS-SEM), the findings reveal that all three OSH components have a significant and positive impact on productivity. Occupational Health emerged as the strongest predictor (β = 0.377), followed by Occupational Safety (β = 0.350) and OSH Awareness (β = 0.312). Collectively, these variables explain 81% of the variance in worker productivity (R² = 0.810), underscoring the central role of OSH implementation in project performance. The study highlights that tangible investments in worker health and safety are not only ethical imperatives but also strategic drivers of efficiency. It concludes by recommending that construction managers treat OSH not as a regulatory formality, but as a critical asset for enhancing workforce output.
Optimizing Flexibility in SUP9 Leaf Springs: The Synergistic Effect of Tempering Temperature and Holding Time Kris Witono; Agustriyana, Lisa; Hadi Susilo, Sugeng
Asian Journal Science and Engineering Vol. 4 No. 1 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i1.1886

Abstract

This study investigates the influence of tempering temperature and holding time on the flexibility of SUP9 steel leaf springs, addressing a practical need for enhanced vibration absorption in heavy-duty vehicles operating on irregular terrain. An experimental study was conducted using a full factorial design with three temperature levels (450°C, 550°C, 650°C) and three holding times (15, 20, 25 minutes). Flexibility was quantified by measuring the maximum deflection in a three-point bending test. The results demonstrate a strong, positive correlation between the tempering parameters and flexibility. The optimal flexibility (47.76 mm deflection) was achieved at the highest treatment condition of 650°C with a 25-minute holding time, representing an 83% improvement over the least effective treatment. ANOVA results confirmed that temperature, holding time, and their interaction are all statistically significant factors (p < 0.05). These findings provide a practical, data-driven guideline for manufacturing more resilient and comfortable leaf springs by optimizing heat treatment protocols.
Analysis of Overheating On Auxiliary Engine Cat 18 On Ahts Ship Logindo Stamina Marshelino Chandra Suhartono; Aziz Nugroho; Trisnowati Rahayu; Antonius Edy Kristiyono; Shofa Dai Robbi; Imam Sutrisno
Asian Journal Science and Engineering Vol. 4 No. 1 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i1.1891

Abstract

This research aims to identify and analyze the primary causes of overheating in the CAT 18 Auxiliary Engine aboard the AHTS Logindo Stamina vessel and to evaluate its impact on the vessel’s operational performance. Overheating has been found to significantly reduce Engine efficiency, increase fuel consumption, and potentially cause blackouts that endanger navigational safety. The investigation identified three main causes: cracking of the seawater pump cover, failure of the thermostat due to prolonged use, and clogging of the sea chest strainer by marine debris. A qualitative descriptive method was applied, involving direct observation and interviews with the ship’s Engine crew. The mitigation efforts included repairing the seawater pump cover using high-temperature-resistant Devcon adhesive, replacing the damaged thermostat, and implementing a regular Plan Maintenance System (PMS). The findings underscore the critical importance of proper cooling system management and routine maintenance discipline in preventing overheating and maintaining the reliable operation of auxiliary Engines aboard ships.
Review of Mechanical Characteristics and Flexural Strength of Concrete Beam Material Original Bundubela, East Sumba Ningrum, Diana; Rasidi, Nawir; Frank Rijkaard Mouwlaka, Enroe
Asian Journal Science and Engineering Vol. 4 No. 1 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i1.1892

Abstract

The utilization of local aggregates is pivotal for promoting sustainable and cost-effective construction, yet their mechanical viability requires rigorous assessment. This study aims to evaluate the mechanical characteristics and flexural strength of concrete beams formulated with aggregates from Bundubela, East Sumba, to determine their suitability under Indonesian National Standards (SNI). The research employed a laboratory-based experimental method following SNI procedures. Two concrete mixtures were tested: a standard mix designed for a compressive strength (fc') of 21.7 MPa and a second mix enhanced with additives, targeting an fc' of 45 MPa. Results indicated that both mixtures failed to achieve their designed strengths. The standard mix only reached an average compressive strength of 18.15 MPa, while the additive-enhanced mix achieved 28.79 MPa. Furthermore, in flexural strength tests on concrete beams, both configurations exhibited excessive deflection, surpassing the maximum limits allowed by SNI. The beam without additives deflected 4.635 mm under a 1500 Kg maximum load, and the additive-enhanced beam deflected 6.145 mm under a 2100 Kg maximum load. These findings conclude that despite enhancement with additives, the Bundubela aggregate is unsuitable for structural concrete applications that must comply with current SNI requirements. This highlights a critical challenge in reconciling the use of local materials with stringent national construction codes, pointing to the need for material modification or specific-standard development
Beyond Compliance: Quantifying the Impact of Occupational Safety and Health on Worker Performance in High-Rise Construction Ria Riskiyah, Indah; Utoyo, Suselo; Sumardi, Sumardi; Jatu Noviarsita, Radhia; Cahyani, Eri
Asian Journal Science and Engineering Vol. 4 No. 1 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i1.1898

Abstract

The construction industry is globally recognized for its high occupational risks, making the implementation of robust Occupational Safety and Health (OSH) programs a critical concern. While the importance of OSH is undisputed, its direct, quantifiable impact on worker performance requires continuous empirical validation. This study aims to analyze the influence of occupational safety and occupational health practices on the performance of workers in a high-rise building project in Surabaya, Indonesia. Utilizing a quantitative approach, data were collected from 63 project personnel via a structured questionnaire. The data were analyzed using multiple linear regression. The results confirm a significant and positive relationship, with OSH practices collectively explaining 44.2% of the variance in worker performance (Adjusted R² = 0.442). A partial analysis of the regression coefficients revealed that occupational safety (β = 0.453) exerts a more dominant influence on performance than occupational health (β = 0.341). This study provides quantitative evidence that OSH programs are not merely a compliance requirement but a direct investment in operational productivity, with tangible safety measures being the primary driver of enhanced worker performance.

Page 4 of 5 | Total Record : 44

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