European Journal of Engineering Science and Technology最新文献

Advancements in Building Deconstruction: Examining the Role of Drone Technology and Building Information Modelling 建筑解构的进展：研究无人机技术和建筑信息模型的作用

European Journal of Engineering Science and Technology Pub Date : 2024-01-02 DOI: 10.33422/ejest.v6i2.1132

C. Ibe, Andreea Şerbescu, Mohataz Hossain

{"title":"Advancements in Building Deconstruction: Examining the Role of Drone Technology and Building Information Modelling","authors":"C. Ibe, Andreea Şerbescu, Mohataz Hossain","doi":"10.33422/ejest.v6i2.1132","DOIUrl":"https://doi.org/10.33422/ejest.v6i2.1132","url":null,"abstract":"Deconstructing a building with the help of drones and BIM (building information modelling) is becoming increasingly common as a more efficient, eco-friendly, and affordable alternative to the traditional techniques of building disassembly. This paper presents a systematic review following the methodology of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) to investigate the role of drone technology and BIM in building deconstruction. A total of 10 studies were identified based on the integration of drone technology with BIM, all of which proved promising in enhancing the process of building deconstruction. The analysis of the 35 and 3 non-academic selected data reveals several key findings. Firstly, BIM is not commonly used in deconstruction or demolition processes, particularly in managing fixtures and fittings of buildings. Secondly, the adoption of deconstruction-oriented design methods and the use of drone technology can significantly reduce the negative environmental impacts of building demolition waste. Lastly, the limited implementation of design for deconstruction practices in the construction industry hinders the realisation of environmental, social, and economic benefits associated with this approach. Overall, this systematic review highlights the potential of drone technology and BIM in improving building deconstruction practices, while also identifying knowledge gaps and areas for further research and development on this topic.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"76 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139389949","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}

引用次数: 0

Effect of Twin Circular Underground Voids on Bearing Capacity of Strip Foundations 双圆形地下空隙对带状地基承载力的影响

European Journal of Engineering Science and Technology Pub Date : 2024-01-02 DOI: 10.33422/ejest.v6i2.1137

Javad Mofidi Rouchi, Mohammad Amin Nozari

{"title":"Effect of Twin Circular Underground Voids on Bearing Capacity of Strip Foundations","authors":"Javad Mofidi Rouchi, Mohammad Amin Nozari","doi":"10.33422/ejest.v6i2.1137","DOIUrl":"https://doi.org/10.33422/ejest.v6i2.1137","url":null,"abstract":"Underground voids can significantly alter the stress and strain conditions of the surrounding soil mass, consequently affecting the stability of buildings located on the surface. Numerous numerical and experimental methods have been employed to investigate the effects of voids on nearby structures. In this research, a mixed lower bound-finite element method is utilized to study the stability of strip foundations situated above twin continuous voids. The soil behavior is modeled using the Mohr-Coulomb yield function along with an associated flow rule. Three-noded triangular stress elements are used to mesh the stress field, considering stress discontinuities at the common edges of adjacent elements. The study assumes that the two voids are identical in terms of radius, distance from the footing centerline, and depth from the ground level. The primary geometrical parameters considered in the analysis are the location and radius of the voids, as well as the strength parameters of the soil. By investigating the changes in bearing capacity concerning these factors, practical charts are proposed to aid in understanding the stability of the foundation. The results of the current study reveal the existence of an unsafe zone beneath the foundations, where the impact of the twin voids on bearing capacity reduction can be significant. Understanding these effects is crucial for design and construction of structures in areas prone to underground voids and also to decide where to bore infrastructure tunnels in order to have minimum effect on stability of the above buildings.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"125 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139390694","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}

引用次数: 0

Review of Mathematical Surface Water’s Hydrodynamic/Water Quality Models with Their Application on the Shatt Al Arab River Southern Iraq 伊拉克南部阿拉伯河地表水水动力/水质数学模型及其应用综述

European Journal of Engineering Science and Technology Pub Date : 2023-06-12 DOI: 10.33422/ejest.v6i1.1057

M. Mawat, Ahmed Naseh A. Hamdan

{"title":"Review of Mathematical Surface Water’s Hydrodynamic/Water Quality Models with Their Application on the Shatt Al Arab River Southern Iraq","authors":"M. Mawat, Ahmed Naseh A. Hamdan","doi":"10.33422/ejest.v6i1.1057","DOIUrl":"https://doi.org/10.33422/ejest.v6i1.1057","url":null,"abstract":"The hydrodynamic/water quality model is an important tool in water environment management. It is used to gain a deeper understanding of physical, chemical, and biological processes and to develop models capable to represent surface waters with realism. A hydrodynamic model can give essential data to sediment, noxious, and eutrophication modelling. Models enable decision-makers to select alternatives for water quality management that are superior and more scientifically justifiable. They also provide a basis for economic analysis to evaluate environmental significance and cost-benefit ratio. The presented study reviewed a variety of research that used various techniques for surface water modeling. The first section focused on the studies conducted on the Shatt Al Arab River and its branches in Basrah province southern Iraq. The second section included studies conducted on various local and global applied cases. As for the third section, it reviewed the studies that used the method of linking models to produce a more effective system, which is the approach we recommend using it in building a comprehensive model of the Shatt al-Arab river. The model will connect the HEC-RAS software, which is known for its competence in modeling complex two-dimensional situations, with the WASP program, which has a high ability to represent a wide range of water pollutants that HEC-RAS cannot represent, especially in a two-dimensional model.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129135520","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}

引用次数: 0

Properties of Jute Fibre Reinforced Polymer Composites – A Review 黄麻纤维增强聚合物复合材料的性能研究进展

European Journal of Engineering Science and Technology Pub Date : 2023-06-12 DOI: 10.33422/ejest.v6i1.1052

B.Pradeepa, M.Malathi, Kiruthika A.V.

引用次数: 1

Simulations and Results for the Heat Transfer Problem 传热问题的模拟与结果

European Journal of Engineering Science and Technology Pub Date : 2023-06-12 DOI: 10.33422/ejest.v6i1.986

Shkelqim Hajrulla, A. Uka, Taylan Demi̇r

{"title":"Simulations and Results for the Heat Transfer Problem","authors":"Shkelqim Hajrulla, A. Uka, Taylan Demi̇r","doi":"10.33422/ejest.v6i1.986","DOIUrl":"https://doi.org/10.33422/ejest.v6i1.986","url":null,"abstract":"In many studies of the heat transfer problems, many scientifics have studied the heat transfer problems by solving partial differential equations without any use of approximations or finding the solutions with experimental data. In this paper, we analyze the heat transfer problem using a heat source in a closed environment and how it transfers in the neighboring sections. We refer to mathematical concept to make possible the simplification of the complexity that associates such thermodynamic problems. We will discuss such a problem as a discrete one, easily computable, rather than treating it as a continuous one. We have reduced this problem into solving a simple system of linear equations and differential equations. In many cases differential equations are hard and difficult to solve. So, we use numerical methods to approximate the differential equations to algebraic equations and solve them. We will compare different algorithms used and show which one of them performs better under our test conditions. The program will simulate the heat transfer of a single heat source in a closed environment. The results of the simulations will be presented in graphs and demonstrated in visual settings. In the end, we will provide our conclusions on the performance of the numerical methods. We achieve the purpose of this study, which is to analyze the heat generation analysis and heat transport in three-dimensional space as to the neighboring sides of a closed environment.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130981324","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}

引用次数: 0

The Role of FabLabs on Footwear and Metal Sectors: Prospects, Challenges, and Recent Applications 工厂实验室在鞋类和金属行业的作用:前景、挑战和最近的应用

European Journal of Engineering Science and Technology Pub Date : 2022-06-25 DOI: 10.33422/ejest.v5i1.965

M. G. Fernandes, Pedro Duarte, C. Figueiredo, Carla Florbela Da Silva, Vânia Pacheco, Cristina Marques

{"title":"The Role of FabLabs on Footwear and Metal Sectors: Prospects, Challenges, and Recent Applications","authors":"M. G. Fernandes, Pedro Duarte, C. Figueiredo, Carla Florbela Da Silva, Vânia Pacheco, Cristina Marques","doi":"10.33422/ejest.v5i1.965","DOIUrl":"https://doi.org/10.33422/ejest.v5i1.965","url":null,"abstract":"This paper presents the role of FabLabs in the Portuguese footwear and metal industrial sectors, regarding the use of new and disruptive technologies and processes at industrial scale, aiming for the digitalization of the industry. MetalShoe FabLab Network is a project intending to provide a physical space and, at the same time, offering knowledge for experimentation, demonstration, validation, and human resources training regarding digital manufacturing technologies, with focus in the industrial implementation. For that, a survey was conducted among industrials from both sectors to understand the needs and expectations regarding these types of technologies. Digitalization, automation and robotics, additive manufacturing and digital marketing were the ones selected as the technologies not yet integrated and that would bring value to the companies, while the companies want to learn more about digitalization, additive manufacturing & 3D Printing and IoT, these being similarly chosen, and automation and robotics following closely behind. In this sense, the outputs of the projects were technical referential about each technology, guides for applications of the technologies, workshops, technical sessions and demonstration actions. In the end, it is expected that Portuguese companies from both sectors would recognize the potential of digital manufacturing technologies and incorporate those that provide the most value to each entity. \u0000 ","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133184225","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}

引用次数: 0

Evaluation of Embroidery Defects and Solution Proposals in Clothing Sector 服装行业刺绣缺陷评价及解决建议

European Journal of Engineering Science and Technology Pub Date : 2022-06-20 DOI: 10.33422/ejest.v5i1.979

M. Kucuk, Şafak Birol

{"title":"Evaluation of Embroidery Defects and Solution Proposals in Clothing Sector","authors":"M. Kucuk, Şafak Birol","doi":"10.33422/ejest.v5i1.979","DOIUrl":"https://doi.org/10.33422/ejest.v5i1.979","url":null,"abstract":"Nowadays, it has become more important to follow the latest developments concerning the clothing sector as staying up to date is likely to help us eliminate unnecessary expenditures and increase productivity. In order for companies to continue and expand their activities in ever-changing market conditions compared to their competitors, they need to make their own enterprises compatible with this emerging technology as much as possible by following the developing technology. In this study, the embroidery department of an exporting company was examined. More specifically, the embroidered products were carefully checked and faulty pieces were separated and classified according to the types of defects. The most critical defects were determined by means of Pareto analysis according to defect types and frequencies and an auxiliary apparatus was placed on the embroidery machine to prevent the defect in question. After the placement of the apparatus, the products were checked again. As a result of the calculations, the percentage of the defects in question decreased from 42.41% to 4.6%, and an improvement of 37.81% was achieved with the apparatus developed within the scope of this study.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132104697","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}

引用次数: 0

Lexicographic Multi-Objective Optimization Approach for Welding Flux System Design 焊剂系统设计的词典多目标优化方法

European Journal of Engineering Science and Technology Pub Date : 2022-06-18 DOI: 10.33422/ejest.v4i1.593

A. Adeyeye, F. Oyawale

{"title":"Lexicographic Multi-Objective Optimization Approach for Welding Flux System Design","authors":"A. Adeyeye, F. Oyawale","doi":"10.33422/ejest.v4i1.593","DOIUrl":"https://doi.org/10.33422/ejest.v4i1.593","url":null,"abstract":"Multiple response optimization of welding flux performance has been found to be cost effective and useful for the achievement of the best balance among conflicting welding flux quality attributes. Many multi-criteria optimization methods (MCOM) have been applied in flux formulation situations where flux quality attributes are of comparable importance. However, information on applications of MCOM to flux design situations where quality attributes are in hierarchical order of importance is scarce in the open literature. In this study, a Lexicographic Multi-objective Optimization (LMO) model was proposed for handling flux design situations in which the attributes are in hierarchical order of importance. The model was applied using data from literature. Two priority levels were used: acicular ferrite (AF) maximization was assigned first priority while the maximization of polygonal ferrite (PF) content and weld-metal impact toughness (WIT) were assigned second priority subject to oxygen content constraint of 250 – 350ppm. The respective solutions for AF, PF, WIT and oxygen content were 51.19%, 21.80%, 23.70J at -20oC and 315ppm. The corresponding flux formulation was CaO (25.90) MgO (15.00) CaF2 (31.10) and Al2O3 (8.00%). Various priority structures were used to explore trade-off options and to generate three more pareto efficient solutions from which the flux formulator can select the most preferred one. The proposed model has filled the existing gap in the literature being a pioneering work in the application of lexicographic multi-objective optimization method in welding flux design.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114468729","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}

引用次数: 1

Investigation of the effect of different factors on the performance of several perovskite solar cells: a simulation study by SCAPS 不同因素对几种钙钛矿太阳能电池性能影响的研究:SCAPS的模拟研究

European Journal of Engineering Science and Technology Pub Date : 2022-04-20 DOI: 10.33422/ejest.v5i1.927

Hasan MallaHasan, Ö. Onay

引用次数: 2

Simulation Modeling for Earth to Air Heat Exchanger system by Using MATLAB 利用MATLAB对地空换热系统进行仿真建模

European Journal of Engineering Science and Technology Pub Date : 2022-03-27 DOI: 10.33422/ejest.v5i1.843

Mohammed H. Ali, Z. Kurjak, J. Beke

{"title":"Simulation Modeling for Earth to Air Heat Exchanger system by Using MATLAB","authors":"Mohammed H. Ali, Z. Kurjak, J. Beke","doi":"10.33422/ejest.v5i1.843","DOIUrl":"https://doi.org/10.33422/ejest.v5i1.843","url":null,"abstract":"A MATLAB model was built for the preparation of initial designs for the establishment of an EAHE system for the purpose of heating and cooling buildings. The purpose of creating this model is to save time and effort by creating a new model capable of providing us and specialized designers with initial perceptions of the size of the appropriate system for the functional requirements for the purpose of cooling and heating buildings. A parametric analysis was then performed to evaluate and investigate the factors affecting the efficiency of the EAHE system. It was found that the pipe diameter is directly proportional to the pipe length, and inversely to the airflow velocity, pressure losses, and AFP. Airflow velocity reduced from 77.05 m/s to 0.1926 m/s, and AFP decreased from 9223 W to 0.058 W when diameter increased from 0.1 m to 2 m. The inlet air temperature affects the length of the pipe in four phases, it is inversely proportional in the first and third phases and directly in the second and fourth phases. These phases depend on the values of soil, inlet, and outlet temperature. This paper presents new equations to determine these phases to determine excluded range which is recommended should not use an inlet air temperature value through this range. The pipe number is directly proportional to pipe length. Pipe length increased from 57.16 m to 344.9 m when the pipe number increased from 1 to 10 pipes. The number of pipes has no influence on the overall airflow velocity or total heat transfer. The length of the pipe is directly proportional to the soil temperature in the first and third phases and inversely proportional in the second and fourth phases. Designers could get an idea of this range by utilizing the equations presented in this paper. There is no direct effect between the soil temperature and power, but rather it affects it through the length of the pipe, as it is directly proportional to pipe length.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126406048","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}

引用次数: 0