Background. Smart irrigation is a research field which grows very fast. It facilitates the contribution of technologies on smart agriculture. Smart irrigation is a broad topic with overwhelming literature published and available semantic ambiguity, so covering such a vast topic is not easy without scoping reviews. To enable researchers to gain a deep knowledge of structure of the field, a scientometric-based scoping review was conducted. Methods. The bibliometric data focused on smart irrigation from databases such as Scopus, Web of Science, and Google Scholar were downloaded, thoroughly merged, and cleaned to meet the inclusion criteria. These data were analyzed and clustered using K-means from VOSviewer. VOSviewer is used to create coauthor and coword occurrence network graphs from keywords, titles, and abstracts. Results. The findings highlight the broad scope of the research field, the ambiguity of the terminology, the lack of collaboration, and the absence of research into the impact of smart irrigation on agriculture. The leading institutions and researchers in the field and geographical distribution are from China, Israel, Australia, and Egypt. The leading main topics addressed in the field are IOT, smart irrigation, irrigation, water stress, energy, deep learning, soil moisture, and relations in the network. Conclusion. Smart irrigation (drip irrigation + IoT) in agriculture increases crop yield, increases water use efficiency, and decreases costs. In future work, large studies need to be conducted to establish and investigate the scope of smart irrigation research to reveal the knowledge structure, current state of practice, and key actors in the field.
背景。智能灌溉是一个发展非常迅速的研究领域。它促进了智能农业技术的贡献。智能灌溉是一个广泛的话题，有大量已发表的文献和可用的语义歧义，因此不进行范围审查就不容易涵盖如此广泛的话题。为了使研究人员能够深入了解该领域的结构，进行了基于科学计量学的范围审查。方法。从Scopus、Web of Science和Google Scholar等数据库中下载关注智能灌溉的文献计量学数据，进行彻底合并和清理，以满足纳入标准。使用VOSviewer中的K-means对这些数据进行分析和聚类。VOSviewer用于从关键字、标题和摘要中创建合著者和共词出现网络图。结果。这些发现突出了研究领域的广泛范围、术语的模糊性、缺乏合作以及缺乏对智能灌溉对农业影响的研究。该领域和地理分布的主要机构和研究人员来自中国、以色列、澳大利亚和埃及。该领域的主要主题是物联网、智能灌溉、灌溉、水压力、能源、深度学习、土壤湿度和网络中的关系。结论。农业中的智能灌溉(滴灌+物联网)提高了作物产量，提高了用水效率，降低了成本。在未来的工作中，需要进行大量的研究来建立和调查智能灌溉研究的范围，以揭示该领域的知识结构、实践现状和关键参与者。
{"title":"A Scoping Review of the Smart Irrigation Literature Using Scientometric Analysis","authors":"Daraje Kaba Gurmessa, Shimelis G. Assefa","doi":"10.1155/2023/2537005","DOIUrl":"https://doi.org/10.1155/2023/2537005","url":null,"abstract":"Background. Smart irrigation is a research field which grows very fast. It facilitates the contribution of technologies on smart agriculture. Smart irrigation is a broad topic with overwhelming literature published and available semantic ambiguity, so covering such a vast topic is not easy without scoping reviews. To enable researchers to gain a deep knowledge of structure of the field, a scientometric-based scoping review was conducted. Methods. The bibliometric data focused on smart irrigation from databases such as Scopus, Web of Science, and Google Scholar were downloaded, thoroughly merged, and cleaned to meet the inclusion criteria. These data were analyzed and clustered using K-means from VOSviewer. VOSviewer is used to create coauthor and coword occurrence network graphs from keywords, titles, and abstracts. Results. The findings highlight the broad scope of the research field, the ambiguity of the terminology, the lack of collaboration, and the absence of research into the impact of smart irrigation on agriculture. The leading institutions and researchers in the field and geographical distribution are from China, Israel, Australia, and Egypt. The leading main topics addressed in the field are IOT, smart irrigation, irrigation, water stress, energy, deep learning, soil moisture, and relations in the network. Conclusion. Smart irrigation (drip irrigation + IoT) in agriculture increases crop yield, increases water use efficiency, and decreases costs. In future work, large studies need to be conducted to establish and investigate the scope of smart irrigation research to reveal the knowledge structure, current state of practice, and key actors in the field.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"10 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135678990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Indoor air quality (IAQ) and related health problems have witnessed remarkable attention recently. The prevalence of sick-building syndrome (SBS) is considered the most common health issue. This study conducted in the Al-Dahrieh neighborhood in Jordan showed for the first time how indoor air quality (IAQ) factors affect the prevalence of sick-building syndrome among occupants in residential buildings. The study investigated the concentration levels of air pollutants and comfort parameters. Architectural and urban design configurations were collected through site observation. In addition, daily activities for occupants were gathered through an online questionnaire. All statistical and descriptive analyses of the data collected for this study were carried out by Spearman’s rho correlation test (SPSS) and Excel 2016. It was done using two-tailed (2-tailed) tests and a 1% statistical significance level ( < 0.01); interestingly, all expected parameters checked using SPSS are acceptable according to the significant factor of < 0.05. The research explored low air quality in the selected case studies and suggested simple mitigation strategies to reduce pollutants concentration in the buildings, such as natural ventilation and control of pollution from internal sources. Moreover, architects may take these findings to enhance neighborhood and building design to achieve the goal of constructing healthier buildings.
{"title":"Correlation between the Prevalence of Sick-Building Syndrome and Safe Indoor Air Quality Concept in Private Residential Housing in Jordan","authors":"Ghaida Freihat, Nabeel Al-kurdi","doi":"10.1155/2023/6634283","DOIUrl":"https://doi.org/10.1155/2023/6634283","url":null,"abstract":"Indoor air quality (IAQ) and related health problems have witnessed remarkable attention recently. The prevalence of sick-building syndrome (SBS) is considered the most common health issue. This study conducted in the Al-Dahrieh neighborhood in Jordan showed for the first time how indoor air quality (IAQ) factors affect the prevalence of sick-building syndrome among occupants in residential buildings. The study investigated the concentration levels of air pollutants and comfort parameters. Architectural and urban design configurations were collected through site observation. In addition, daily activities for occupants were gathered through an online questionnaire. All statistical and descriptive analyses of the data collected for this study were carried out by Spearman’s rho correlation test (SPSS) and Excel 2016. It was done using two-tailed (2-tailed) tests and a 1% statistical significance level ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"> <mi>p</mi> </math> < 0.01); interestingly, all expected parameters checked using SPSS are acceptable according to the significant factor of <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\"> <mi>p</mi> </math> < 0.05. The research explored low air quality in the selected case studies and suggested simple mitigation strategies to reduce pollutants concentration in the buildings, such as natural ventilation and control of pollution from internal sources. Moreover, architects may take these findings to enhance neighborhood and building design to achieve the goal of constructing healthier buildings.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"38 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jicheng Zhou, Li Yu, Ayipaiyili Yuetikuer, Linzhao Hao, Bingchun Jiang
The performance of distributed PV systems is often hindered by edge soiling, mainly due to the challenges associated with centralized cleaning. In recent years, half-cell modules have gained popularity over conventional full-cell modules due to their potential for improved performance. However, limited research has been conducted to compare the effects of edge soiling on full-cell and half-cell modules, particularly in various mounting orientations. Furthermore, there is a scarcity of methods that integrate simulation and experimentation to analyze the characteristics of shaded PV modules. This study aims to optimize module selection and mounting orientation to mitigate the impact of edge soiling. Simulated models and experimental setups were developed for both full-cell and half-cell modules in both landscape and portrait orientations. The results reveal that the degree of shading correlates with the ratio of shaded substrings within a module. In addition, module performance can be significantly enhanced by altering the mounting orientation. Specifically, the findings demonstrate that half-cell modules outperform full-cell modules when mounted in the portrait orientation. However, in the landscape orientation, the advantage of half-cell modules diminishes. Remarkably, the choice of mounting orientation is found to be contingent on the severity of edge soiling for half-cell modules. This work significantly contributes to the understanding of shading effects in PV systems and offers practical guidance for optimizing distributed PV systems against edge soiling.
{"title":"Comparative Analysis of Edge Soiling Resilience: Full-Cell vs. Half-Cell Photovoltaic Modules in Different Mounting Orientations","authors":"Jicheng Zhou, Li Yu, Ayipaiyili Yuetikuer, Linzhao Hao, Bingchun Jiang","doi":"10.1155/2023/5572523","DOIUrl":"https://doi.org/10.1155/2023/5572523","url":null,"abstract":"The performance of distributed PV systems is often hindered by edge soiling, mainly due to the challenges associated with centralized cleaning. In recent years, half-cell modules have gained popularity over conventional full-cell modules due to their potential for improved performance. However, limited research has been conducted to compare the effects of edge soiling on full-cell and half-cell modules, particularly in various mounting orientations. Furthermore, there is a scarcity of methods that integrate simulation and experimentation to analyze the characteristics of shaded PV modules. This study aims to optimize module selection and mounting orientation to mitigate the impact of edge soiling. Simulated models and experimental setups were developed for both full-cell and half-cell modules in both landscape and portrait orientations. The results reveal that the degree of shading correlates with the ratio of shaded substrings within a module. In addition, module performance can be significantly enhanced by altering the mounting orientation. Specifically, the findings demonstrate that half-cell modules outperform full-cell modules when mounted in the portrait orientation. However, in the landscape orientation, the advantage of half-cell modules diminishes. Remarkably, the choice of mounting orientation is found to be contingent on the severity of edge soiling for half-cell modules. This work significantly contributes to the understanding of shading effects in PV systems and offers practical guidance for optimizing distributed PV systems against edge soiling.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"41 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135973747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The objective of this article is to examine the impacts of molybdenum disulphide (MoS2) and graphite-filled (Gr) polyetheretherketone (PEEK) composites that have been fabricated through 3D printing on their mechanical properties and crystallinity. Seven samples and thirty-five dog bones were produced using different filament strands to conduct the analysis. Before extrusion into filaments, the solid lubricants, MoS2, and graphite were uniformly dispersed within the PEEK through mechanical blending. At a concentration of 10 wt.%, the PEEK/MoS2 composites exhibited the highest tensile strength, measuring approximately 104 MPa, while the PEEK/Gr composites displayed the lowest tensile strength at the same concentration, approximately 36 MPa. In addition, the PEEK/MoS2 composites demonstrated better elongation, approximately 4.7%, compared to the PEEK/Gr composites, which exhibited approximately 2.3% elongation. X-ray diffraction (XRD) data revealed that neither MoS2 nor graphite significantly interacted with the PEEK matrix. The degree of crystallinity, as determined by density matrices, indicated that the printed PEEK composites possessed a higher level of crystallinity, approximately 62% at a concentration of 5 wt.%, than the calculated values. This suggests that the filament-making and 3D printing processes had an annealing effect. The significance of solid lubricant content and dispersion in shaping the mechanical properties and crystal formation of 3D-printed PEEK composites is emphasized in this study. Furthermore, this research provides valuable insights for optimizing PEEK-based materials for various applications.
{"title":"Experimental Analysis of Crystallinity and Mechanical Properties for Fused Filament Printed Polyetherketone Composites","authors":"Taiwo Ladipo, Leonard Masu, Patrick Nziu","doi":"10.1155/2023/6687928","DOIUrl":"https://doi.org/10.1155/2023/6687928","url":null,"abstract":"The objective of this article is to examine the impacts of molybdenum disulphide (MoS2) and graphite-filled (Gr) polyetheretherketone (PEEK) composites that have been fabricated through 3D printing on their mechanical properties and crystallinity. Seven samples and thirty-five dog bones were produced using different filament strands to conduct the analysis. Before extrusion into filaments, the solid lubricants, MoS2, and graphite were uniformly dispersed within the PEEK through mechanical blending. At a concentration of 10 wt.%, the PEEK/MoS2 composites exhibited the highest tensile strength, measuring approximately 104 MPa, while the PEEK/Gr composites displayed the lowest tensile strength at the same concentration, approximately 36 MPa. In addition, the PEEK/MoS2 composites demonstrated better elongation, approximately 4.7%, compared to the PEEK/Gr composites, which exhibited approximately 2.3% elongation. X-ray diffraction (XRD) data revealed that neither MoS2 nor graphite significantly interacted with the PEEK matrix. The degree of crystallinity, as determined by density matrices, indicated that the printed PEEK composites possessed a higher level of crystallinity, approximately 62% at a concentration of 5 wt.%, than the calculated values. This suggests that the filament-making and 3D printing processes had an annealing effect. The significance of solid lubricant content and dispersion in shaping the mechanical properties and crystal formation of 3D-printed PEEK composites is emphasized in this study. Furthermore, this research provides valuable insights for optimizing PEEK-based materials for various applications.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136098409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kifle Adula Duguma, Oluwole Daniel Makinde, Lemi Guta Enyadene
Mounting temperatures in electronic devices during operation may damage sensitive internal components if too much thermal energy accumulates inside the system. The advent of an innovative ultrahigh-performance thermal management technology known as nanofluid has provided a veritable platform to improve the system performance and reliability by removing the high heat flux generated in the engineering and industrial devices. This paper examines the combined effects of Darcy–Forchheimer porous medium-resistant heating and viscous dissipation on stagnation point flow of a Casson nanofluid ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M3"> <mtext>CoF</mtext> <msub> <mrow> <mi mathvariant="normal">e</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <msub> <mrow> <mi mathvariant="normal">O</mi> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </math> - <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4"> <msub> <mrow> <mi mathvariant="normal">H</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mi mathvariant="normal">O</mi> </math> and <math xmlns="http://www.w3.org/1998/Math/MathML" id="M5"> <mtext>Ti</mtext> <msub> <mrow> <mi mathvariant="normal">O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </math> - <math xmlns="http://www.w3.org/1998/Math/MathML" id="M6"> <msub> <mrow> <mi mathvariant="normal">H</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mi mathvariant="normal">O</mi> </math> ) towards a convectively heated slippery stretching/shrinking cylindrical surface in a porous medium. The governing nonlinear model equations are obtained, analysed, and tackled numerically via the shooting technique with the Runge–Kutta–Fehlberg integration scheme. A unique solution is obtained when the surface is stretching. For shrinking cylindrical surface, the model exhibits nonunique dual solutions for a defined range of parameter values, and a temporal stability analysis is conducted to ascertain the stable and physically achievable solution. The effects of emerging thermophysical parameters on the overall flow structure and thermal management such as velocity and temperature profiles, skin friction, and Nusselt number are quantitatively discussed through graphs and in tabular form. It is found that the thermal performance heat transfer enhancement capability of <math xmlns="http://www.w3.org/1998/Math/MathML" id="M7"> <mtext>Ti</mtext> <msub> <mrow> <mi mathvariant="normal">O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </math> - <math xmlns="http://www.w3.org/1998/Math/MathML" id="M8"> <msub> <mrow> <mi mathvariant="normal">H</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mi mathvariant="normal">O</mi> </math> is higher than that of <math xmlns="http://www.w3.org/1998/Math/MathML" id="M9"> <mtext>CoF</mtext> <msub> <mrow> <mi mathvariant="normal">e</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <msub> <mrow> <mi mathvariant="normal">O</mi> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </math> - <math xmlns="http://www.w3.org/1998/Math/MathML" id="M10"> <msub>
{"title":"Stagnation Point Flow of <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"> <mtext>CoF</mtext> <msub> <mrow> <mi mathvariant=\"normal\">e</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <msub> <mrow> <mi mathvariant=\"normal\">O</mi> </mrow> <mrow> <mn>4</mn> </mrow> </msub> <mo>/</mo> <mtext>Ti</mtext> <msub> <mrow> <mi mathvariant=\"normal\">O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </math>-<math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\"> <msub> <mrow> <mi mathvariant=\"normal…","authors":"Kifle Adula Duguma, Oluwole Daniel Makinde, Lemi Guta Enyadene","doi":"10.1155/2023/8238703","DOIUrl":"https://doi.org/10.1155/2023/8238703","url":null,"abstract":"Mounting temperatures in electronic devices during operation may damage sensitive internal components if too much thermal energy accumulates inside the system. The advent of an innovative ultrahigh-performance thermal management technology known as nanofluid has provided a veritable platform to improve the system performance and reliability by removing the high heat flux generated in the engineering and industrial devices. This paper examines the combined effects of Darcy–Forchheimer porous medium-resistant heating and viscous dissipation on stagnation point flow of a Casson nanofluid ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M3\"> <mtext>CoF</mtext> <msub> <mrow> <mi mathvariant=\"normal\">e</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <msub> <mrow> <mi mathvariant=\"normal\">O</mi> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </math> - <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M4\"> <msub> <mrow> <mi mathvariant=\"normal\">H</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mi mathvariant=\"normal\">O</mi> </math> and <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M5\"> <mtext>Ti</mtext> <msub> <mrow> <mi mathvariant=\"normal\">O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </math> - <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M6\"> <msub> <mrow> <mi mathvariant=\"normal\">H</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mi mathvariant=\"normal\">O</mi> </math> ) towards a convectively heated slippery stretching/shrinking cylindrical surface in a porous medium. The governing nonlinear model equations are obtained, analysed, and tackled numerically via the shooting technique with the Runge–Kutta–Fehlberg integration scheme. A unique solution is obtained when the surface is stretching. For shrinking cylindrical surface, the model exhibits nonunique dual solutions for a defined range of parameter values, and a temporal stability analysis is conducted to ascertain the stable and physically achievable solution. The effects of emerging thermophysical parameters on the overall flow structure and thermal management such as velocity and temperature profiles, skin friction, and Nusselt number are quantitatively discussed through graphs and in tabular form. It is found that the thermal performance heat transfer enhancement capability of <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M7\"> <mtext>Ti</mtext> <msub> <mrow> <mi mathvariant=\"normal\">O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </math> - <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M8\"> <msub> <mrow> <mi mathvariant=\"normal\">H</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mi mathvariant=\"normal\">O</mi> </math> is higher than that of <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M9\"> <mtext>CoF</mtext> <msub> <mrow> <mi mathvariant=\"normal\">e</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <msub> <mrow> <mi mathvariant=\"normal\">O</mi> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </math> - <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M10\"> <msub>","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135303663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Monitoring the condition of the aircraft actuators in various operating and environmental circumstances, this paper presents a method for measuring the surface roughness of aircraft actuators. The proposed method starts with the current and vibration signal as failure indicators and a dual-tree complex wavelet transformation (DTCWT) to generate the necessary features. Time-delay neural networks (TDNNs) have been developed for real-time performance monitoring to categorize problems and determine their severity. The simulation results show that the suggested method can accurately identify various faults.
{"title":"Aircraft Actuator Performance Analysis Based on Dynamic Neural Network","authors":"Wathiq Rafa Abed","doi":"10.1155/2023/8237786","DOIUrl":"https://doi.org/10.1155/2023/8237786","url":null,"abstract":"Monitoring the condition of the aircraft actuators in various operating and environmental circumstances, this paper presents a method for measuring the surface roughness of aircraft actuators. The proposed method starts with the current and vibration signal as failure indicators and a dual-tree complex wavelet transformation (DTCWT) to generate the necessary features. Time-delay neural networks (TDNNs) have been developed for real-time performance monitoring to categorize problems and determine their severity. The simulation results show that the suggested method can accurately identify various faults.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahsan Waqar, Idris Othman, Muhammad Shafiq Aiman, Muhammad Basit Khan, Md. Mahmodul Islam, Hamad Almujibah, Malik Abdul Karim
The application of metaverse technology in the field of civil engineering has the potential to improve project efficiency and accuracy. Nevertheless, the pervasive adoption and effective integration of metaverses are contingent on a number of crucial factors. This study investigates the critical factors underlying the successful implementation of metaverse technology within a business context. This research employs a comprehensive mixed-method approach comprised of exploratory factor analysis (EFA) and structural equation modelling (SEM) to examine survey responses gathered from seasoned professionals in the architecture, engineering, and construction (AEC) sectors in Bangladesh. In areas such as communication and collaboration, design visualization, and monitoring and maintenance, the construction industry has made extraordinary strides. As imperatives for managerial consideration strategic investment in resources, targeted training initiatives, heightened awareness campaigns, and prudent deployment of cost-effective and efficient metaverse-based solutions emerge, future investigations should include a larger sample size and an evaluation of the lasting effects over extended time periods. The key to unleashing the full potential of the metaverse within the architecture, engineering, and construction industries lies in addressing these identified success determinants, thereby ushering in enhanced project outcomes and enhanced efficiency within the constructed environment. The combination of these initiatives is expected to pave the way for a new era in the AEC landscape.
{"title":"Analyzing the Success of Adopting Metaverse in Construction Industry: Structural Equation Modelling","authors":"Ahsan Waqar, Idris Othman, Muhammad Shafiq Aiman, Muhammad Basit Khan, Md. Mahmodul Islam, Hamad Almujibah, Malik Abdul Karim","doi":"10.1155/2023/8824795","DOIUrl":"https://doi.org/10.1155/2023/8824795","url":null,"abstract":"The application of metaverse technology in the field of civil engineering has the potential to improve project efficiency and accuracy. Nevertheless, the pervasive adoption and effective integration of metaverses are contingent on a number of crucial factors. This study investigates the critical factors underlying the successful implementation of metaverse technology within a business context. This research employs a comprehensive mixed-method approach comprised of exploratory factor analysis (EFA) and structural equation modelling (SEM) to examine survey responses gathered from seasoned professionals in the architecture, engineering, and construction (AEC) sectors in Bangladesh. In areas such as communication and collaboration, design visualization, and monitoring and maintenance, the construction industry has made extraordinary strides. As imperatives for managerial consideration strategic investment in resources, targeted training initiatives, heightened awareness campaigns, and prudent deployment of cost-effective and efficient metaverse-based solutions emerge, future investigations should include a larger sample size and an evaluation of the lasting effects over extended time periods. The key to unleashing the full potential of the metaverse within the architecture, engineering, and construction industries lies in addressing these identified success determinants, thereby ushering in enhanced project outcomes and enhanced efficiency within the constructed environment. The combination of these initiatives is expected to pave the way for a new era in the AEC landscape.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135132427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The demand level of Cu-Cr base alloys is on the top notch from miniature parts to large parts based on their mechanical, metallurgical, chemical, and electrical properties. Due to these, the processing of Cu-Cr-Zr alloys for the betterment of those properties has been a prospect for researchers. Commonly, Cu-Cr alloys are manufactured through the conventional extrusion process at the industrial level. However, conventional extrusion processes have some limitations, specifically regarding grain size refinement and accompanying strength. To avoid such a problem, the conform extrusion process is inculcated for the Cu and Al alloys extrusion. In the present study, C18150 copper rods were extruded from the feed stock rod of 12.5 mm to 10 and 8 mm in diameter through the conform extrusion process; however, no posttreatment and artificial aging have been made to the extrudates. The extrudates of C18150 rods were tested mechanically and microstructurally. Significant mechanical properties improvement has been observed as the diameter decreased to a certain dimension. Same phenomenon is also observed in the microstructural and hardness case. Wear test results also followed the similarity with that of mechanical properties.
{"title":"Mechanical Behavior and Wear Characteristics of a Conform Extruded C18150 (Cu-Cr-Zr Alloy) Rod","authors":"Tariku Desta, Devendra Kumar Sinha, Perumalla Janaki Ramulu","doi":"10.1155/2023/8487824","DOIUrl":"https://doi.org/10.1155/2023/8487824","url":null,"abstract":"The demand level of Cu-Cr base alloys is on the top notch from miniature parts to large parts based on their mechanical, metallurgical, chemical, and electrical properties. Due to these, the processing of Cu-Cr-Zr alloys for the betterment of those properties has been a prospect for researchers. Commonly, Cu-Cr alloys are manufactured through the conventional extrusion process at the industrial level. However, conventional extrusion processes have some limitations, specifically regarding grain size refinement and accompanying strength. To avoid such a problem, the conform extrusion process is inculcated for the Cu and Al alloys extrusion. In the present study, C18150 copper rods were extruded from the feed stock rod of 12.5 mm to 10 and 8 mm in diameter through the conform extrusion process; however, no posttreatment and artificial aging have been made to the extrudates. The extrudates of C18150 rods were tested mechanically and microstructurally. Significant mechanical properties improvement has been observed as the diameter decreased to a certain dimension. Same phenomenon is also observed in the microstructural and hardness case. Wear test results also followed the similarity with that of mechanical properties.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135535040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ali Al-Azzawi, Abouther Al-Shimmery, Ahmed Alshara, Mohammed Razzaq Mohammed
In this study, a CFD simulation analysis was used to predict the characteristics of a swirl flow as a reference to optimize a new design of microbubble generator. To examine the impact of the inlet design, three different configurations of the inlet type were applied, namely single inlet, double inlet, and tangent-circle inlet. The performance of the microbubble generator was characterized in terms of swirl velocity, pressure drop in radial position, and pressure distribution along the central axis of the microbubble generator. Generally, the CFD analysis succeeded to visualize the hypothetical bath of the flow streamlines inside the microbubble generators. The results illustrated that the swirl flow in the tangent-circle inlet was able to generate a negative pressure zone in the central area of the generator (i.e., self-suction mechanism). In addition, the tangent-circle inlet showed a high-pressure drop compared with the single inlet microbubble generator. Although the double inlet microbubble generator illustrated a high-pressure drop between the inlet and the outlet, the streamlines distribution was focused only on the top part of the microbubble generator. This was a reason why the self-suction mechanism was not well defined.
{"title":"Computational Fluid Dynamics Simulation Assessment of Inlet Configuration Influence on Enhancing Swirl Flow Microbubble Generator Performance","authors":"Ali Al-Azzawi, Abouther Al-Shimmery, Ahmed Alshara, Mohammed Razzaq Mohammed","doi":"10.1155/2023/1457986","DOIUrl":"https://doi.org/10.1155/2023/1457986","url":null,"abstract":"In this study, a CFD simulation analysis was used to predict the characteristics of a swirl flow as a reference to optimize a new design of microbubble generator. To examine the impact of the inlet design, three different configurations of the inlet type were applied, namely single inlet, double inlet, and tangent-circle inlet. The performance of the microbubble generator was characterized in terms of swirl velocity, pressure drop in radial position, and pressure distribution along the central axis of the microbubble generator. Generally, the CFD analysis succeeded to visualize the hypothetical bath of the flow streamlines inside the microbubble generators. The results illustrated that the swirl flow in the tangent-circle inlet was able to generate a negative pressure zone in the central area of the generator (i.e., self-suction mechanism). In addition, the tangent-circle inlet showed a high-pressure drop compared with the single inlet microbubble generator. Although the double inlet microbubble generator illustrated a high-pressure drop between the inlet and the outlet, the streamlines distribution was focused only on the top part of the microbubble generator. This was a reason why the self-suction mechanism was not well defined.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134886075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Natural fibre-reinforced polymer composites (NFRPs) have gained increasing attention in recent years as an alternative to conventional materials such as steel and aluminum alloys due to their ecofriendly, renewable, and low-cost nature. This paper focuses on the thermal application of NFRPs, which have shown great potential due to their good thermal insulation properties. In this study, the fabrication of jute and hemp fibre-reinforced composites, experimental testing, comparison, validation by using computational method, and proposed hemp NFRPs insulated exhaust pipe in place of conventional steel pipe. However, challenges such as moisture absorption and limited thermal properties on high thermal load still need to be addressed to enable the full-scale commercialization of NFRPs in thermal applications. For these comprehensive investigations, coupled and verified engineering approaches have been imposed. Fluid-thermal coupling has been executed in ANSYS workbench associated with conventional test outcomes. Through this approach, the low weight and low cost-based thermal load resisting material has been proposed for various engineering applications.
{"title":"Comprehensive Thermal Characteristic Investigations on Hemp- and Jute-Based Nature Fibre-Reinforced Composites for Engineering Applications through Coupled and Verified Engineering Approaches","authors":"Sabari Thangavel, Mohamed Aashik Jaffar Ali, Raj Kumar Gnanasekaran, Beena Stanislaus Arputharaj, Arunkumar Karuppasamy, Hussein A. Z. AL-Bonsrulah, Parvathy Rajendran, Vijayanandh Raja, Devendhiran Soundararajan, Krishnakumar Kalaivani Muthuramalingam","doi":"10.1155/2023/4031238","DOIUrl":"https://doi.org/10.1155/2023/4031238","url":null,"abstract":"Natural fibre-reinforced polymer composites (NFRPs) have gained increasing attention in recent years as an alternative to conventional materials such as steel and aluminum alloys due to their ecofriendly, renewable, and low-cost nature. This paper focuses on the thermal application of NFRPs, which have shown great potential due to their good thermal insulation properties. In this study, the fabrication of jute and hemp fibre-reinforced composites, experimental testing, comparison, validation by using computational method, and proposed hemp NFRPs insulated exhaust pipe in place of conventional steel pipe. However, challenges such as moisture absorption and limited thermal properties on high thermal load still need to be addressed to enable the full-scale commercialization of NFRPs in thermal applications. For these comprehensive investigations, coupled and verified engineering approaches have been imposed. Fluid-thermal coupling has been executed in ANSYS workbench associated with conventional test outcomes. Through this approach, the low weight and low cost-based thermal load resisting material has been proposed for various engineering applications.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134885328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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