Journal of Engineering Research最新文献

{"title":"The effect of aging heat treatment on the formability and microstructure of the AA6063 tube in the rotary draw bending process","authors":"Majid Elyasi ,&nbsp;Hossein Talebi-Ghadikolaee ,&nbsp;Ali Zeinolabedin-Beygi ,&nbsp;Vahid Modanloo ,&nbsp;Farzad Ahmadi Khatir","doi":"10.1016/j.jer.2023.10.017","DOIUrl":"10.1016/j.jer.2023.10.017","url":null,"abstract":"<div><div>This research delves into the impact of aging heat treatment on both the formability and microstructural characteristics of 6063 aluminum tubes when subjected to the rotary draw bending (RDB) procedure. To ascertain a heat treatment regimen that can yield desirable hardness and formability for the bending process, the tube was subjected to T3, T6, and annealing heat treatment cycles under diverse conditions and subsequently the tube's bendability was evaluated. The findings indicate that as temperature and dissolution time are raised, there is a corresponding rise in the extent of elliptical deformation, consequently resulting in higher hardness values. The research outcomes suggest that elevating both temperature and dissolution time leads to a more pronounced elliptical shape in the bent sample. For instance, when subjected to heat treatment at 530 °C and 545 °C for 60 min, the samples exhibited respective increases in ellipticity of 5.30 % and 4.34 % compared to those treated for just 30 min. Additionally, higher internal pressure led to a reduction in the degree of elliptical deformation, notably a decrease of 9.85 % observed at a pressure of 20 bar. Moreover, the hardness of samples subjected to the T3 cycle exhibited an upward trend with increasing both temperature and duration of heat treatment. To elaborate, the hardness measurements were conducted at three distinct temperatures (530 °C, 545 °C, and 560 °C) and four different durations (30, 45, 60, and 75 min). The sample subjected to a 75-minute heat treatment at 560 °C exhibited the highest recorded hardness value, measuring at 62.55 HV. In summary, the results indicate that aging heat treatment can enhance the formability of 6063 aluminum tubes during the RDB process. Furthermore, it is noteworthy that temperature and internal pressure serve as crucial parameters to control in order to mitigate elliptical deformation and enhance hardness.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 283-293"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135705860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive study of groundbreaking machine learning research: Analyzing highly cited and impactful publications across six decades","authors":"Absalom E. Ezugwu ,&nbsp;Japie Greeff ,&nbsp;Yuh-Shan Ho","doi":"10.1016/j.jer.2023.10.027","DOIUrl":"10.1016/j.jer.2023.10.027","url":null,"abstract":"<div><div>Machine learning (ML) has emerged as a prominent field of research in computer science and other related fields, thereby driving advancements in other domains of interest. As the field continues to evolve, it is crucial to understand the landscape of highly cited publications to identify key trends, influential authors, and significant contributions made thus far. In this paper, we present a comprehensive bibliometric analysis of highly cited ML publications. We collected a dataset consisting of the top-cited papers from reputable ML conferences and journals, covering a period of several years from 1959 to 2022. We employed various bibliometric techniques to analyze the data, including citation analysis, co-authorship analysis, keyword analysis, and publication trends. Our findings reveal the most influential papers, highly cited authors, and collaborative networks within the machine learning community. We identify popular research themes and uncover emerging topics that have recently gained significant attention. Furthermore, we examine the geographical distribution of highly cited publications, highlighting the dominance of certain countries in ML research. By shedding light on the landscape of highly cited ML publications, our study provides valuable insights for researchers, policymakers, and practitioners seeking to understand the key developments and trends in this rapidly evolving field.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 371-383"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135963209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive literature review on friction stir welding: Process parameters, joint integrity, and mechanical properties","authors":"Suleyman Kilic ,&nbsp;Fahrettin Ozturk ,&nbsp;Mehmet Fatih Demirdogen","doi":"10.1016/j.jer.2023.09.005","DOIUrl":"10.1016/j.jer.2023.09.005","url":null,"abstract":"<div><div>Friction stir welding is not only a solid-state joining method used mostly for metals and alloys, but also, used for joining various polymer materials. This literature review includes information about the process parameters, joint integrity, and mechanical properties of FSW welded joints. Process parameters have a great influence on the quality of the weld joints. In particular, basic process variables such as tool design, rotational speed, welding speed, and axial force were reviewed in this study. By optimizing these process parameters, weld strength can be increased by minimizing welding defects. In addition, the effects of the FSW method on mechanical properties such as hardness, tensile, and fatigue behaviors were discussed. Finally, some suggestions were made for using the method. This literature review aims to be a resource for researchers and those interested in the FSW method to make decisions based on process optimization, design, and material selection.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 122-130"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84362596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vaccine supply chain network design by considering viability, robustness and risk","authors":"Reza Lotfi ,&nbsp;Reza Mohammad Shafiei ,&nbsp;Masoumeh Ghavami Komeleh ,&nbsp;Fatemeh Gholizadeh Pasha ,&nbsp;Mohammad Ferasat","doi":"10.1016/j.jer.2023.10.007","DOIUrl":"10.1016/j.jer.2023.10.007","url":null,"abstract":"<div><div>This study aims to develop a solution for the Viable Vaccine Supply Chain Network Design (VVSCND) problem, which concurrently addresses multiple factors such as sustainability, resiliency, agility, risk, and robustness. To achieve this, the researchers propose a Mixed-Integer Linear Programming (MILP) model based on a Robust Stochastic Programming (RSP) approach, which minimizes the weighted expected and max cost function. Furthermore, the research considers factors such as limiting CO₂ emissions, introducing flexible capacity, and ensuring the reliability and redundancy of facilities to establish a more agile and environmentally sustainable supply chain. The key decisions in the proposed methodology involve determining facility location and product flow within an efficient healthcare system. According to the findings, the cost function of the VVSCND problem was only marginally higher, by 0.04%, than its counterpart in a VSCND that did not consider any risks or worst-case scenarios. However, increasing the conservatism coefficient or agility coefficient by 50% and 10%, respectively, leads to similar increases in the cost function. Similarly, the resiliency coefficient has a direct relationship with the cost function. Overall, the study demonstrates that an optimal VSCND can be achieved by considering multiple factors through RSP-based MILP modeling.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 27-38"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134978246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and numerical investigation of PCMS on ceilings for thermal management","authors":"Arivazhagan R ,&nbsp;Antony Aroul Raj V ,&nbsp;Geetha NB ,&nbsp;Pandiyarajan R","doi":"10.1016/j.jer.2023.08.023","DOIUrl":"10.1016/j.jer.2023.08.023","url":null,"abstract":"<div><div>In this study, experimental investigation of phase change materials (PCM) integrated into building on ceilings was assessed for thermal management capabilities by comparing two building test models with and without PCM based on fluctuation in PCM temperatures owing to ambient temperature variations. Commercial organic PCM (OM-30) with a peak melting point of 31.1⁰ C was used as PCM with high-density polyethylene (HDPE) as the encapsulation. Differential scanning calorimeter (DSC) was used to examine the thermophysical characteristics of PCM such as phase transition temperature, latent heat, and specific heat capacity. The various PCM temperature ranges included for the study are (i) Above phase change melting temperature range ii) within Phase Change melting temperature range iii) Proximity to PCM onset melting temperature range iv) proximity to PCM end melting temperature range. Under free-floating ambient Condition, the indoor air temperature was dropped in PCM installed room up to 1.69 °C, 5.79 °C, 2.26 °C, &amp; − 2.87 °C compared to without PCM room for a PCM Melting temperature difference of 8.77 °C,1.55 °C, 1 °C &amp; 0.44 °C respectively. Also, it was divulged that the PCM utilized 3.2%, 31.4%, 6.9%, &amp; 12.27% of the total latent heat energy deployed in order to produce a temperature difference of 1.69 °C, 5.79 °C, 2.26 °C, &amp; − 2.87 °C compared to without PCM room.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 229-242"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136300854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified maximum likelihood space registration method for shipborne multi-radar signal processing","authors":"Jianghuai Pan","doi":"10.1016/j.jer.2023.09.035","DOIUrl":"10.1016/j.jer.2023.09.035","url":null,"abstract":"<div><div>Aiming at the spatial registration problem for networking of multi-platform shipborne radars, a modified maximum likelihood (MML) absolute registration algorithm based on singular value decomposition (SVD) is proposed. Firstly, the four major biases (radar detection biases, platform positioning biases, attitude biases, and baseline conversion biases) which affect shipborne radar detection are analyzed, and an equivalent model of shipborne radar detection biases is established to make the bias parameters more efficiently. Secondly, the maximum likelihood registration method is improved. According to the singular value decomposition, the conditional index is used to evaluate the observability in the maximum likelihood registration method in realtime, and the abnormal conditional index is corrected to effectively reduce the fluctuation of the bias estimation. Finally, the simulation results of two different scenarios are conducted, and the results show that the new method has significant improvements in estimation accuracy and algorithm stability compared with the existing algorithms.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 185-197"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135458798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of recycled aggregates as filter support and filter media for decentralized water filtration systems","authors":"Anupriya Verma ,&nbsp;Roza Yalem ,&nbsp;Gaurav Saini","doi":"10.1016/j.jer.2023.10.016","DOIUrl":"10.1016/j.jer.2023.10.016","url":null,"abstract":"<div><div>Clean drinking water is crucial for maintaining public health and can be considered a fundamental right of people. Unfortunately, access to potable water is limited for residents of developing and underdeveloped countries, especially in rural communities. Conventional treatment systems for such regions are challenging in terms of installation, operation, and maintenance. An emerging problem of rapid urbanization and proliferating construction industry is huge quantities of Construction and Demolition (C &amp; D) waste, which needs proper reuse and/or disposal. A simultaneous solution to these twin problems is the formulation of a decentralized water filtration system using C &amp; D waste aggregates. In the current study, small-scale (5-lt capacity), decentralized water filtration systems were designed and tested for the treatment of surface water samples. Fresh aggregates were replaced by C &amp; D waste aggregates progressively in the drainage media, support media, and filter media; resulting in a total of seven test filtration devices. The effectiveness of such filters was evaluated for treating river water samples. It was found that the filters prepared with C &amp; D waste aggregates were successful in the removal of turbidity, total solids, and total dissolved solids (TDS). Removal efficiencies up to 98% for turbidity, 86% for total solids, and 61% for the TDS were observed for different combinations of fresh and recycled aggregates in these filters. The results also show that filters made with only recycled aggregates can also yield high levels of contaminant removal and cleaner water. Further, the color and odor of the raw water were also significantly improved. These results show that C &amp; D waste can be successfully incorporated into decentralized water treatment systems and can result in high-quality water through low-cost and low-tech, easy-to-maintain/operate devices.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 399-408"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135656976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of window orientation, glazing, and window-to-wall ratio on the heating and cooling energy of an office building: The case of hot and semi-arid climate","authors":"Ahmed Emad Ahmed ,&nbsp;Mahmood Sh. Suwaed ,&nbsp;Ahmed Mohammed Shakir ,&nbsp;Ahmed Ghareeb","doi":"10.1016/j.jer.2023.10.034","DOIUrl":"10.1016/j.jer.2023.10.034","url":null,"abstract":"<div><div>Adopting suitable design strategies in buildings throughout the design stage provides increased energy-saving potential. In this study, factors influencing window design, such as the window-to-wall ratio (WWR) and window orientation, along with different glazing materials, are being investigated in the city of Kirkuk, Iraq for possible energy consumption reduction. The study presents a simulation-based analysis on a typical office building in the area; evaluating four WWRs, four orientations, and three window glazing materials, e.g., clear, gray, and theoretical, as well as single and double-glazed windows. The results indicate that minimum heating consumption could be achieved with double clear glass for south-facing windows if WWR was 100 %. For north-facing windows, minimum cooling consumption is achieved with double theoretical-197 glass with a 25 % WWR. These measures can be utilized by architects and construction managers to communicate information to customers in an understandable manner and make better window design decisions.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 409-422"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136093797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An end-to-end Tacotron model versus pre trained Tacotron model for Arabic text-to-speech synthesis","authors":"A.M. Mutawa","doi":"10.1016/j.jer.2023.08.016","DOIUrl":"10.1016/j.jer.2023.08.016","url":null,"abstract":"<div><div>Text-to-Speech (TTS) systems turn normal text into spoken language, which is important for accessibility and user interaction. Many of these systems make speech from phonetic or phonemic transcriptions, but another way is to make speech by connecting together pre-recorded units from a database. The size of the units varies, from diphones to whole phrases. Even though this method covers a lot of ground, it sometimes needs more clarity, especially when high-quality output requires storing whole words or phrases in certain situations. Synthesizers can also use the way humans talk and the way their vocal tracts work to make voices. The Arabic language is hard to develop TTS methods for, as a result of its complicated morphology, semantic nuances, and many different dialects. These dialects often have a lot of differences from standard Arabic and don't follow formal rules for spelling. This means that traditional Arabic that hasn't been edited often has spelling and grammar mistakes. In this study, we show and test a Tacotron model that was made just for Arabic TTS synthesis from beginning to end. This model uses the richness of acoustic information in audio files, such as frequency and pitch, to make naturalistic speech that sounds a lot like what humans say. We also compare the performance of this model with that of a pre-trained Tacotron model applied to Arabic text. This gives us important information about how well Arabic TTS systems work and where they could be improved.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 384-389"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89266508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An integration of PSO-ANN and ANFIS hybrid models to predict surface quality, cost, and energy (QCE) during milling of alloy 2017A","authors":"Kamel Bousnina,&nbsp;Anis Hamza,&nbsp;Noureddine Ben Yahia","doi":"10.1016/j.jer.2023.09.016","DOIUrl":"10.1016/j.jer.2023.09.016","url":null,"abstract":"<div><div>An alarming pace of increase in worldwide energy consumption is being caused by population expansion and economic development, particularly in emerging market countries. Due to their efficiency and reproducibility in accomplishing high-precision machining, CNC machine tools are widely employed in most metal machining processes. The use of simple machining features to search for the assignment of cutting parameters and the machining process on the output variables is limited since a part, in reality, can contain complex interacting features. Therefore, this study focuses on pocket/groove features by integrating grey relational analysis (GRA) and hybrid PSO-ANN and ANFIS algorithms to optimize and predict surface quality, cost and energy consumption (QCE). Taking into account the population size of the swarm (pop) and the number of neurons (n) in the hidden layer, a parametric study was carried out to find the best prediction using the hybrid algorithm PSO-ANN. This study reported the highest trained correlation values (R²) for all output variables (greater than 0.97%). The study shows that the assignment of machining strategies and sequences on energy consumption can reach 99.25% between the minimum and maximum values. The mean square error (MSE) data demonstrates that the PSO-ANN model is effective. Indeed, an MSE improvement of 99.84%, 99.87%, and 97.62% has been demonstrated in terms of E_tot, C_tot, and Ra, respectively, of the PSO-ANN model compared to ANFIS. This study reveals the potential of the PSO-ANN hybrid for multi-criteria prediction (quality, cost, and energy: QCE) by comparing it with the ANFIS model.</div></div>","PeriodicalId":48803,"journal":{"name":"Journal of Engineering Research","volume":"13 1","pages":"Pages 156-168"},"PeriodicalIF":0.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135347896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}