Engineering and Technology Horizons https://ph01.tci-thaijo.org/index.php/lej <p><em>Engineering and Technology Horizons</em> (ETH), formerly known as Ladkrabang Engineering Journal, is an academic refereed journal organized by the School of Engineering, King Mongkut's Institute of Technology Ladkrabang (KMITL) in Thailand. ETH is an open-access scientific journal that focuses explicitly on publishing original academic and research articles related to engineering and technology. The journal provides a platform for researchers, scientists, and academicians to share their knowledge and ideas with the broader scientific community through online publications.</p> <p><strong>Journal Abbreviation: </strong>Eng. &amp; Technol. Horiz.</p> <p><strong>ISSN: </strong>2985-1688 (Online)</p> <p><strong>Starting Year: </strong>1983</p> <p><strong>Language: </strong>English</p> <h3><strong>Aims</strong></h3> <p>Engineering and Technology Horizons strives to advance the field of engineering and technology through theoretical and practical approaches. The journal's aims include:</p> <ul> <li>To publish high-quality articles on engineering and technology, both nationally and internationally.</li> <li>To serve as a platform for exchanging research results and knowledge in engineering and technology among students, researchers, and teachers.</li> <li>To become a repository of valuable academic research articles in engineering and technology.</li> </ul> <h3><strong>Scope of the Journal</strong></h3> <p>Articles that are suitable for publication should be related to the field of engineering and technology. This includes research reports the author has experimented with, created, or directly participated in. The published article should present a new idea or principle that is supported by adequate theoretical evidence. It should also be an interesting and useful academic article for students and researchers. It is essential to note that the authors must have played a direct role in or organized the majority of the article. The journal covers the fields of engineering and technology as follows:</p> <ul> <li>Civil engineering, environmental engineering, and engineering related to architecture</li> <li>Electrical engineering, electronic engineering, and computer engineering</li> <li>Chemical engineering and petroleum engineering</li> <li>Agricultural engineering and food engineering</li> <li>Industrial engineering, management engineering, and production engineering</li> <li>Telecommunication engineering and information engineering</li> <li>Mechanical engineering, rail engineering, and mechatronic engineering</li> <li>Measurement and control engineering</li> <li>Biomedical engineering.</li> </ul> <h3><strong>Type of Article</strong></h3> <p>ETH accepts two types of articles: research and academic articles.</p> <ul> <li><strong>Research article: </strong>A research article is a document with a form of research according to academic principles; for example, there is a hypothesis or a reasonably identified problem. In addition, it must clearly state objectives, systematic research, collect data for consideration, analysis, interpretation, and conclusion of research that can provide answers to certain objectives or principles that will lead to academic advancement or practical application.</li> <li><strong>Academic article:</strong> An academic article is written in the manner of analyzing, criticizing, or proposing new ideas from an academic basis that has been compiled from the academic work of one's own or that of others, or an academic article written for general knowledge for the public.</li> </ul> <p>Manuscripts submitted to the journal must not have been previously published or under consideration elsewhere. Researchers must follow the highest standards of scientific integrity while submitting manuscripts, ensuring that their research is ethical and rigorous. Manuscripts presenting innovative and original research and contributing to developing new theories, methodologies, and techniques are encouraged.</p> <h3><strong>Language</strong></h3> <p>All submissions must be in clear and concise English with proper grammar and correct spelling.</p> <h3><strong>Peer Review</strong></h3> <p>The articles will undergo a double-blind review process by at least three experts. This ensures that the reviewers' comments are academically sound and their recommendations are helpful to the authors.</p> <h3><strong>Publication Frequency</strong></h3> <p>The journal is published every three months, with four issues per year. </p> <ul> <li><strong>Issue 1:</strong> January - March</li> <li><strong>Issue 2:</strong> April - June</li> <li><strong>Issue 3:</strong> July - September</li> <li><strong>Issue 4:</strong> October - December</li> </ul> <h3><strong>Publication fee</strong></h3> <p>Publication is free of charge as all costs are covered by the School of Engineering, King Mongkut's Institute of Technology Ladkrabang.</p> <p> </p> <h2>Policy</h2> <h3><strong>Editorial Policy </strong></h3> <p>Independent reviewers will evaluate academic and research articles for publication. The articles must include substantial supported theories, innovative work, substantial experimental results, useful and constructive discussions, and academic articles in the fields of engineering and technology. An electronic journal is available on the website (<a href="https://ph01.tci-thaijo.org/index.php/lej/">https://ph01.tci-thaijo.org/index.php/lej/</a>). The Editors have the right to request revisions to the submitted manuscript before it is finally accepted. The institute and the editorial board do not take responsibility for the views or content expressed by the authors of individual articles. Acknowledgment is required for any copying.</p> <h3><strong>Open Access and Archiving Policies</strong></h3> <p>This journal promotes the global exchange of ideas and knowledge by providing open access to its research content.</p> <p>The Engineering and Technology Horizons journal's articles are available on Thailand's central electronic journal database, Thai Journal Online (ThaiJO). You can access all the published articles for free from the archives section on their website (<a href="https://ph01.tci-thaijo.org/index.php/lej/issue/archive">https://ph01.tci-thaijo.org/index.php/lej/issue/archive</a>). The authors hold the copyright of their articles, and they are permitted to self-archive their articles in PDF format.</p> <h3><strong>Publication Fee Policy</strong></h3> <p>The Engineering and Technology Horizons journal is an open access publication founded by the School of Engineering, King Mongkut's Institute of Technology Ladkrabang in Thailand. Its purpose is to publish high-quality academic and research articles on engineering and technology. The journal is open to anyone whose research work meets the editorial board's criteria, and there are no page charges for submissions. The School of Engineering fully covers the cost of publication.</p> <h3><strong>Peer-reviewed Policy</strong></h3> <p>Manuscripts submitted to Engineering and Technology Horizons undergo editorial and peer review. Editors assess whether a manuscript is technically sound and scientifically valid before sending it for double-blind peer review. Authors can suggest peer reviewers in the ETH article <a href="https://ph01.tci-thaijo.org/index.php/lej/libraryFiles/downloadPublic/967">submission form</a>, but the Editor's decision is final. Authors should not recommend recent collaborators or colleagues from the same institution. If an Editor has competing interests, another member will oversee peer review. Authors should include copies of related papers with their submission.</p> <p> </p> <h2>Management</h2> <h3><strong>Ownership</strong></h3> <p>The School of Engineering at KMITL is the rightful owner of the Engineering and Technology Horizons journal. The school provides all necessary facilities to ensure the journal maintains its high publication standards, rigorous peer-review process, and open-access availability to researchers and readers worldwide. The Office of Academic Journal Administration, under the President's Office, has been assigned to oversee the overall management of the journal, in line with the School of Engineering's vision. For further information about the School of Engineering, KMITL, please visit <a href="https://engineer.kmitl.ac.th/">https://engineer.kmitl.ac.th/</a>.</p> <h3><strong>Copyright and Licensing</strong></h3> <p>Engineering and Technology Horizons values copyright protection and licensing to secure the author’s rights. We publish articles under a Creative Commons Attribution License (CC BY), which allows sharing, adaptation, and proper attribution, while authors retain copyright ownership. This fosters openness, accessibility, and responsible sharing, benefiting authors and the research community while honoring intellectual property rights.</p> <h3><strong>Revenue Source</strong></h3> <p>The School of Engineering at KMITL is the primary revenue source for the journal, which is utilized to sustain its operations and ensure transparency. Any revenue sources for the journal do not influence editorial decisions. Manuscripts submitted for publication are evaluated solely on their scientific merit. Throughout the submission and publication process, we maintain transparency and high publication standards.</p> <h3><strong>Advertising and Direct Marketing</strong></h3> <p>Our advertising policy is transparent and ethical. Advertisements, if any, are displayed separately from published content, and decisions regarding advertising are made based on relevance and quality. We prioritize professionalism, ethics, and the separation of advertising from scientific content to uphold editorial independence and article integrity. Additionally, we approach direct marketing activities cautiously to maintain ethical standards, prioritize transparency, obtain consent, and respect data privacy regulations.</p> <p><strong>Engineering and Technology Horizons (ETH)<br />Research and Innovation, Academic Support Section</strong><strong><br />Dean's Office, 2nd Floor 6-storey building<br />School of Engineering, King Mongkut’s Institute of Technology Ladkrabang</strong><br />No. 1, Chalong Krung 1, Chalong Krung Road, Lat Krabang Sub-district,<br />Lat Krabang District, Bangkok, 10520, Thailand<br />Tel/Fax: 02-329-8301 Ext. 249, E-mail: kmitl.eng.jnl@gmail.com</p> en-US <div class="item copyright"> <div class="item copyright"> <p>The published articles are copyrighted by the School of Engineering, King Mongkut's Institute of Technology Ladkrabang.</p> <p>The statements contained in each article in this academic journal are the personal opinions of each author and are not related to King Mongkut's Institute of Technology Ladkrabang and other faculty members in the institute.<br />Responsibility for all elements of each article belongs to each author; If there are any mistakes, each author is solely responsible for his own articles.</p> </div> </div> kmitl.eng.jnl@gmail.com (Prof. Dr. Uma Seeboonruang) kmitl.eng.jnl@gmail.com (Miss. Chanunchida Nobnom) Thu, 27 Mar 2025 07:17:39 +0700 OJS 3.3.0.8 http://blogs.law.harvard.edu/tech/rss 60 Predictive Maintenance of Banbury Mixer Using Machine Learning Methods: A Case Study of a Tire Manufacturing Factory https://ph01.tci-thaijo.org/index.php/lej/article/view/258522 <p class="Abstracttext">This study investigates parameters of the Banbury mixer, focusing on Material Rubber Sheet (MRS) production duration, to develop a machine learning-based failure detection system. Proposed data preprocessing methods aim to uncover patterns of the relationship between current and previous batch parameters. While data differencing suffices for SVM and RF models, it minimally impacts ANN. Solely employing data cleaning renders RF suitable for model creation. SVM outperforms RF in failure detection but may produce occasional false alarms. Performance evaluation indicates RF accurately detects 13 out of 29 failures, surpassing SVM detecting 16 failures with 2 false alarms. The SVM model from data cleaning combined with differencing reduces waste by 55.17%, surpassing RF by 6.89%. Future research could explore advanced preprocessing for failure cause categorization and leverage sophisticated techniques.</p> Pattaraporn Nueasri, Chanokporn Smuthkalin, Anan Butrat, Siriwan Polset, Nuntarat Sookpunya Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/258522 Thu, 27 Mar 2025 00:00:00 +0700 Solar Irradiance Forecasting using Dynamic Mode Decomposition https://ph01.tci-thaijo.org/index.php/lej/article/view/259252 <p class="Normalcontent"><span style="letter-spacing: -.2pt;">Reliable solar irradiance prediction is necessary for an easier transition from dependence on fossil fuels to renewable energy sources. The features of solar irradiance, such as its non-linearity and high variability, make predicting it a challenging task. This challenge is traditionally addressed by using regression and other ensemble models that require significantly large historical data to adequately train and rely on domain-specific knowledge. In this study, a data-driven framework that employed dynamic mode decomposition for solar irradiance forecasting was proposed. The efficiency of the dynamic mode decomposition-based framework was verified by employing it for short-term forecasting using two distinct datasets from geographically diverse locations. The comparative advantage over traditional regression was confirmed using performance assessment measures, including mean absolute error, mean bias error, and root mean square error. The resulting forecasts significantly outperformed the benchmark models, demonstrating that the proposed model could effectively forecast short-term solar irradiance with improved accuracy.</span></p> Olusegun Abel Odejobi, Kehinde Olukunmi Alawode, Muyideen Olalekan Lawal Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/259252 Thu, 27 Mar 2025 00:00:00 +0700 Effects of residual particles and multiply charged particles of a polystyrene latex particle on the particle filtration efficiency of a medical face masks https://ph01.tci-thaijo.org/index.php/lej/article/view/258492 <p class="Abstracttext"><span style="letter-spacing: -.2pt;">The objective of this study is to elucidate the impact of residual particles and multiply charged particles of polystyrene latex (PSL) particles on the particle filtration efficiency of a medical face mask. Adhering to the ASTM F2299 test methodology, this investigation employed a PSL particle (Thermo ScientificTM Dri-CalTM) with a diameter of 100 nanometers and a geometric standard deviation of approximately 1.6%. The scanning mobility particle sizer (SMPS) was utilized to ascertain the size distribution of PSL particles both upstream and downstream of the test face mask, thereby determining the particle filtration efficiency of the face mask for residual particles and multiply charged particles at various PSL particle-to-DI water ratios. The PSL particle-to-DI water ratios employed in this study were 10, 20, and 100 drops per 200 mL, respectively. The findings revealed that PSL suspension residual particles with a mobility diameter less than 60 nanometers, as well as multiple charged particles with a mobility diameter exceeding 100 nanometers, introduced complexity to purportedly monodisperse particle aerosols. An increase in PSL suspension concentration resulted in a heightened relevance of the residual peak. At elevated concentrations, PSL multiply charged particles became discernible in the size distribution. Furthermore, it was demonstrated that as the PSL particle-to-DI water ratios increased, the particle filtration efficiency of the test face mask diminished for both single charged particles and multiply charged particles (+2, +3, +4, and +5).</span></p> Papol Sardyoung, Panich Intra, Theerachot Lawong, Wisanapat Rattanachan Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/258492 Thu, 27 Mar 2025 00:00:00 +0700 Lean Improvement of the Fuzzy Overall Equipment Effectiveness for the Half-Bearing Production Processes using the System Dynamics Simulation https://ph01.tci-thaijo.org/index.php/lej/article/view/259785 <p>This research presents the problem of decreasing the production efficiency of the Half-bearing production process resulting in parts production quantities not meeting the target. The OEE is used as a production efficiency index, which measures availability rate, performance efficiency and quality rate. The characteristic of production data in practice is dynamic behaviour. The objectives of this research are to analyze problems of the half-bearing production process to make improvements using OEE assuming time and loss to be TFNs. The research method is to develop a system dynamics model to analyze %OEE, whereas %OEE before improvements ranges between 67–72%. The improvement operations are waste reduction, planned maintenance, system testing and tool change. The results found that the %OEE after improvement range between 70–77% and the %improvement range between 3–11%.</p> Sirang Klankamsorn Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/259785 Thu, 27 Mar 2025 00:00:00 +0700 Prediction of Vapor Pressure of Edible Vegetable Oils with Solvents at Temperature 348.15 K to 373.15 K from Activation Energy https://ph01.tci-thaijo.org/index.php/lej/article/view/260331 <p>Edible vegetable oil is a food product extracted from plant seeds and is one of the key ingredients in global cuisine. It plays a vital role in enhancing the flavor, texture, and color of food. Additionally, vegetable oils contain natural antioxidants such as tocopherols, phenolic compounds, and phytosterols, which have health benefits. Vegetable oils play a crucial role in various industries, including food, chemicals, pharmaceuticals, cosmetics, and fuels. Predicting the vapor pressure of vegetable oils and solvents in a two-component phase equilibrium system is essential for solvent extraction processes and their subsequent reuse. This study presents a predictive equation for vapor pressure derived from Gibbs free energy, accounting for the influence of molecular interactions in the two-component phase equilibrium system. The research focuses on three types of vegetable oils: soybean oil, sunflower oil, and canola oil, along with three solvents: methanol, ethanol, and hexane, evaluated at temperatures of 348.15 K to 373.15 K across a molar concentration range of solvent = 0.2–1.0. The proposed equation is In <img src="https://latex.codecogs.com/svg.image?\small&amp;space;\rho&amp;space;_{blend}=A_{1}&amp;plus;A_{2}\chi_{1}&amp;plus;A&amp;space;_{3}\chi&amp;space;_{1}^{2}&amp;plus;\left(A_{4}&amp;plus;A&amp;space;_{5}\chi&amp;space;_{1}&amp;plus;A&amp;space;_{6}\chi&amp;space;_{1}^{2}\right)/" alt="equation" /> T demonstrates high accuracy, with an average bias of -0.01 and an average absolute deviation (AAD) of 1.030.</p> Nawaporn Hongpan, Tanapat Techapirom, Sayan Puttala, Suriya Phankosol, Thussanee Plangklang Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/260331 Thu, 27 Mar 2025 00:00:00 +0700 The Impacts of Climate Change on Future Hydrometeorological Regimes in the Chao Phraya River Basin, Thailand https://ph01.tci-thaijo.org/index.php/lej/article/view/260323 <p>The major aim of this study is to investigate the impacts of climate change on hydrometeorological regimes including air temperature, rainfall, potential evapotranspiration and consequently natural runoff. Chao Phraya basin was selected as the case of study area. Rainfall variation and change of the selected irrigation projects in the Chao Phraya basin was also examined. The historic records of air temperature and rainfall were collected from 41 meteorological stations located in and nearby the basin area. Climate change was investigated by using the Generalized Circulation Model (GCM) projection of A1B balance of all source scenario. The study used output data from the United Kingdom Hadley Center’s Global Climate Model “HadCM3 (10) (13)” with approximately 180 × 180 km. spatial resolution. Downscaling into the Chao Phraya basin was accomplished using the PRECIS Regional Climate Model with approximately 25 × 25 km. resolution along with the bias correction technique with reference to the mean observed time series. It was found that in the 20-year period during 2017–2036, the average monthly maximum and minimum air temperatures in the Chao Phraya basin trend to increase throughout the normal baseline values during 1981–2010 by 0.5–2.0 degree Celsius. The monthly rainfall under climate change in the Chao Phraya basin over 20-year period during 2017–2036 which is an average of every 5 years, shows significant deviation both higher and lower from the normal baseline values during 1981–2010 in the range of 10 mm per month to 50 mm per month. The monthly average runoff in the Chao Phraya basin over the 20-year period during 2017–2036, average every 5 years across all 4 periods during 2017–2021, 2022–2026, 2027–2031, and 2032–2036 are significantly varied. The highest values during the rainy season were found in the 2027–2031 average period. While the lowest values during the rainy season were observed in the 2022–2026 period. These findings should be useful for water allocation management and appropriate use of water resources under climate change condition in the Chao Phraya basin.</p> Saisunee Budhakooncharoen, Somchai Baimouang, Dhabhisara Budhakooncharoen Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/260323 Thu, 27 Mar 2025 00:00:00 +0700 Development of a GIS-based Bird Map Application for the Royal Thai Air Force’s Aviation Safety Management https://ph01.tci-thaijo.org/index.php/lej/article/view/260074 <p>This study aimed to assess bird strike risk and develop a GIS-based bird map application to enhance aviation safety for the Royal Thai Air Force. Five risk factors, including bird size, weight, density, activity range, and flight altitude were collected and analyzed using the data from the Royal Thai Air Force Software Center as well as the 6th Wing squadrons. Severity level and probability of occurrence were calculated and used to design a bird strike risk assessment application. The developed application allows users such as pilots and air operators to assess bird strike risk and display real-time maps and images of bird coordinates. This tool can increase safety and reduce bird strike accidents, serving both military and civilian aviation needs.</p> Kriengkrai Thana, Jittraphon Sangsiri , Kiatkulchai Jitt -Aer, Thapanat Buaphiban Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/260074 Thu, 27 Mar 2025 00:00:00 +0700 Rapid estimation method for span load distribution on a rectangular wing planform using tabular data from lifting-line theory https://ph01.tci-thaijo.org/index.php/lej/article/view/259858 <p class="Abstracttext"><span style="color: black;">The aim of this article is to present the rapid estimation method for span load distribution on a rectangular wing planform by using the tabular data from lifting-line theory. The data is generated by solving a monoplane equation to determine the coefficient of Fourier sine series that represents horseshoe strength distributed along the wingspan. Then the ratio of local lift coefficient to wing lift coefficient at the selected positions are determined and are presented in the tabular form. This set of data can be used to determine the spanwise lift distribution, the magnitude of total lift force and spanwise center of pressure location. The present method can be applied for a rectangular planform which has no sweep angle at quarter chord line and has no both geometric and aerodynamic twist along wingspan. The range of wing aspect ratio is 4 to 12 and the taper ratio is 0.1 to 1.0. Although the assumption of flow around wing planform is incompressible flow or at Mach number lower than 0.3, this present method can be extended to be used for subsonic compressible flow condition by using Prandtl-Glauert rule which is also discussed in this article. An illustrative example of the calculation process is presented in this article and the comparison of the result from the present method to the other calculation methods and experimental data are also discussed in this article.</span></p> Tosaporn Soontornpasatch Copyright (c) 2025 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 https://ph01.tci-thaijo.org/index.php/lej/article/view/259858 Thu, 27 Mar 2025 00:00:00 +0700