Journal of King Saud University, Engineering Sciences最新文献_第3页

The behavior of different clays subjected to a fast-drying cycle for traditional ceramic manufacturing 传统陶瓷制造中不同粘土在快速干燥循环中的表现

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2022.05.003

{"title":"The behavior of different clays subjected to a fast-drying cycle for traditional ceramic manufacturing","authors":"","doi":"10.1016/j.jksues.2022.05.003","DOIUrl":"10.1016/j.jksues.2022.05.003","url":null,"abstract":"<div><p>Studies have been widely carried out on drying techniques and equipment. The behavior of clays subjected to drying stages requires further research. This study aims to evaluate the behavior of the clay ceramic body during the different stages of the drying cycle and match the characteristics of the raw materials with the final quality of the pieces. In this work, the behavior of three different clays in terms of drying performance was studied. The clays were selected, and their chemical, mineralogical, and particle size characteristics were measured. The mixture design (DoE) developed 10 formulations and was processed through vacuum extrusion. The samples were subjected to forced drying cycles of 180 min by varying the temperature from 30 to 90 °C and air speed from 1.5 to 4.0 m/s. At the end of the cycle, the retraction was a determining factor for the crack probability indicator, where formulations that obtained ∼10% retraction in the dry zone showed losses >25%. On the other hand, it is could be stated that claystone assists the drying process of the ceramic piece, minimizing losses. The drying sensitivity coefficient (k-factor) presented values that reproduce the number of losses during drying, proving to be a valid tool to relate clay properties, drying conditions, and losses in this process. In this case, drying process losses >25% were observed when the k-factor was from 1.6.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363922000447/pdfft?md5=596f8cc564235872afd4133464ca174b&pid=1-s2.0-S1018363922000447-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78569203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Dioscorea alata stem fibers as eco-friendly reinforcement for composite materials 开发薯蓣茎纤维作为复合材料的生态友好型增强材料

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2022.02.003

{"title":"Development of Dioscorea alata stem fibers as eco-friendly reinforcement for composite materials","authors":"","doi":"10.1016/j.jksues.2022.02.003","DOIUrl":"10.1016/j.jksues.2022.02.003","url":null,"abstract":"<div><p>The use of natural fibers instead of synthetic fibers has become a hot topic in the reinforced composite manufacturing industry. However, there are considerable differences in the mechanical properties of natural fibers cited in the literature. These differences could be due to the prevalent use of monothetic analysis. In this paper, the use of a simplified Taguchi technique in novel <em>Dioscorea alata</em> stems fiber processing is proposed to allow for simultaneous evaluation of control parameters such as treatment type, harvest condition, gauge length and chemical treatment temperature to determine the optimal conditions for fiber tensile properties. These fibers were extracted from the stem by means of water retting method before chemical treatment. The tensile properties were determined as per ASTM D3822/D3822M-14. Non-destructive examinations were employed to look into the chemical make-up, thermal, crystalline and morphological characteristics of the fibers. The test results showed an optimum tensile strength of 151 MPa and tensile modulus of 5709.5 MPa. Density was 0.4 g/cm<sup>3</sup> while cellulose, lignin, moisture, hemicellulose and ash contents were 13.1 %, 10.3 %, 9.7 %, 5.0 % and 8.2 % respectively. The treated fibers were thermally stable till 320 °C. The properties of <em>Dioscorea alata</em> stem fiber (DASF) were found to be promising when compared to existing natural fibers, making it a viable candidate for composite material reinforcement.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363922000174/pdfft?md5=61a24537f28b2b0d621040cf637f37c2&pid=1-s2.0-S1018363922000174-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89011306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of multiproduct pipeline telescopicity design on the process of mixing during sequential pumping 多产品管道伸缩性设计对连续泵送过程中混合过程的影响

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2022.05.002

引用次数: 0

Modeling and simulation of the startup of the coupling reactor for Industrial-Scale production of Diethyl oxalate 草酸二乙酯工业规模生产耦合反应器的启动建模与模拟

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2022.05.007

引用次数: 0

CO2 sequestration using a novel Belt Conveyor Reactor with rotating sieve trays compared with Airlift Bubble Column as photobioreactors 将带有旋转筛盘的新型带式输送反应器与气升泡柱作为光生物反应器进行二氧化碳封存比较

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2021.12.007

{"title":"CO2 sequestration using a novel Belt Conveyor Reactor with rotating sieve trays compared with Airlift Bubble Column as photobioreactors","authors":"","doi":"10.1016/j.jksues.2021.12.007","DOIUrl":"10.1016/j.jksues.2021.12.007","url":null,"abstract":"<div><p>The present work aims to evaluate the performance of a novel three-phase reactor Belt Conveyor Reactor BCR (with rotating sieve trays patent GB2567340B) as a photobioreactor compared with a traditional Airlift Bubble Column ALR, both influenced by the flow of the gas. <em>Chlorella vulgaris</em> was cultivated in these two photobioreactors using ambient air has a CO<sub>2</sub> concentration of 0.038% with different aeration flowrates 0.145, 0.195, 0.24, and 0.29 vvm (gas volume per minute/liquid volume in the reactor).</p><p>The maximum growth rate achieved on the 14th day of culture was 2.120 and 1.420 g/L for BCR, ALR respectively, with initial biomass concentrations of 0.2 g/L and aeration flow of 0.29 vvm. Moreover, the removal efficiency of carbon dioxide sequestration by the two photobioreactors is 40% for BCR and 25% for ALR. The innovative design succeeded in operational quality of agitation with high gas holdup inside the sieve trays to increase the biomass growth up to 50% higher than in the ALR. The maximum CO<sub>2</sub> fixation for ALR was at about 18% at a specific aeration rate of 0.145 vvm in the bubbly regime. Whereas in the BCR can be reached about 38% with wide range operation condition of airflow rate 0.145–0.24 vvm due to well-distributed liquid due to rotating trays, and good gas–liquid mass transfer surface area.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363921001859/pdfft?md5=d2fe7427ec1c649e9b3a78e2a3b76ed2&pid=1-s2.0-S1018363921001859-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85130903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Augmented hunger games search algorithm using logarithmic spiral opposition-based learning for function optimization and controller design 使用对数螺旋对立学习的增强型饥饿游戏搜索算法，用于函数优化和控制器设计

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2022.03.001

{"title":"Augmented hunger games search algorithm using logarithmic spiral opposition-based learning for function optimization and controller design","authors":"","doi":"10.1016/j.jksues.2022.03.001","DOIUrl":"10.1016/j.jksues.2022.03.001","url":null,"abstract":"<div><p>This paper explains the construction of a novel augmented hunger games search algorithm using a logarithmic spiral opposition-based learning technique. The proposed algorithm (LsOBL-HGS) is used as an efficient tool for both function optimization and controller design. To assess the performance of the algorithm for function optimization, benchmark functions from the CEC2017 test suite were employed and comparisons were made with available and good performing algorithms. In terms of controller design, the proposed LsOBL-HGS algorithm was utilized to design a FOPID controlled magnetic ball suspension system. Comparative assessments were also performed for FOPID controller design, as well using other state-of-the-art methods reported for the magnetic ball suspension system. The results showed that the proposed LsOBL-HGS algorithm has good capability for FOPID controller design employed in a magnetic ball suspension system as it provided an improvement of more than <span><math><mrow><mn>13</mn><mo>%</mo></mrow></math></span> in terms of the transient response-related parameters and more than <span><math><mrow><mn>34</mn><mo>%</mo></mrow></math></span> in terms of bandwidth compared to the best-reported approach used for comparisons.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363922000186/pdfft?md5=a9d7502477cefeef9a0c98e320bd40df&pid=1-s2.0-S1018363922000186-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89715050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accurate finite element modelling of knots and related fibre deviations in structural timber 结构木材节疤及相关纤维偏差的精确有限元建模

Journal of King Saud University, Engineering Sciences Pub Date : 2024-07-01 DOI: 10.1016/j.jksues.2022.01.005

{"title":"Accurate finite element modelling of knots and related fibre deviations in structural timber","authors":"","doi":"10.1016/j.jksues.2022.01.005","DOIUrl":"10.1016/j.jksues.2022.01.005","url":null,"abstract":"<div><p>The primary purpose of the pursued research presented in this article was to propose a new technique to create the actual three-dimensional geometry of knots and related fibre deviations and eliminate the inconsistency between modelling the knots as openings or solids. The geometrical and mechanical characteristics of knots and related local disturbed fibre patterns were numerically modelled. The numerical models were experimentally validated by four-point bending tests performed on six timber beams made of Nordic spruce (<em>Picea abies</em>). Tested specimens were sliced up into several strips parallel to the grains in the vicinity of the knot to numerically generate the actual geometrical model of the knots and related fibre deviations for creating the three-dimensional fibre paradigm. The validated numerical models can also be used based on visual inspections. The user needs only to define the position and size of the knot within the timber element required for the 3D finite element model. Moreover, the model allows defining different fibre patterns in the knot vicinity. Results proved that openings can represent knots when found in the tension zone with careful adjustment of the related three-dimensional fibre deviations. Moreover, the results emphasize the need for accurate modelling for the fibre deviations rather than the knot itself.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363922000058/pdfft?md5=bbdfb2bdaf363838d9fdb0d8ff2359b0&pid=1-s2.0-S1018363922000058-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76963358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the friction and wear properties of zinc oxide/silicon dioxide composite-coated paper mulch film 氧化锌/二氧化硅复合涂层纸地膜的摩擦和磨损特性研究

Journal of King Saud University, Engineering Sciences Pub Date : 2024-05-01 DOI: 10.1016/j.jksues.2021.12.004

Anling Li , Yangyang Jia , Zhen Li , Shuaiyang Ren , Fengwei Zhang , Qiang He

{"title":"Study on the friction and wear properties of zinc oxide/silicon dioxide composite-coated paper mulch film","authors":"Anling Li , Yangyang Jia , Zhen Li , Shuaiyang Ren , Fengwei Zhang , Qiang He","doi":"10.1016/j.jksues.2021.12.004","DOIUrl":"10.1016/j.jksues.2021.12.004","url":null,"abstract":"<div><p>Paper mulching films are affected by wind and rain in the field, which lead to the problems of water absorption, shrinkage, and friction with the soil surface. In order to achieve better hydrophobic durability and wear resistance of paper mulching films, a paper mulching film with ZnO/SiO<sub>2</sub> composite coating was prepared by the brush coating method. Taking ceramic balls as friction pairs, reciprocating friction tests were carried out with two kinds of paper mulching films at different temperatures. The morphology of the raw paper mulch film and the ZnO/SiO<sub>2</sub> composite-coated paper mulch film after rubbing at different temperatures and the reason of the hydrophobic durability of the coated paper mulch film were analyzed using a scanning electron microscope and a three-dimensional topography instrument. The results show that ZnO/SiO<sub>2</sub> composite coating can improve the wear resistance and hydrophobic durability of the paper mulch film. Through surface morphology analysis, it can be found that the composite coating plays a role in modification and filling and improves the adhesion between the fibers by reducing the pores on the surface of the paper mulch film, finally improving the wear resistance and hydrophobic durability of the paper mulch film.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363921001756/pdfft?md5=cadc89ecda6ee9cc4323c4248692b449&pid=1-s2.0-S1018363921001756-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72488234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal dynamic balancing of a hybrid serial-parallel robotic manipulator through bio-inspired computing 通过生物启发计算优化串并联混合机器人机械手的动态平衡

Journal of King Saud University, Engineering Sciences Pub Date : 2024-05-01 DOI: 10.1016/j.jksues.2021.10.008

Ricardo Mejia-Rodriguez, Miguel Gabriel Villarreal-Cervantes, Josué Nathán Martínez-Castelán, José Saúl Muñoz-Reina, Víctor Manuel Silva-García

{"title":"Optimal dynamic balancing of a hybrid serial-parallel robotic manipulator through bio-inspired computing","authors":"Ricardo Mejia-Rodriguez, Miguel Gabriel Villarreal-Cervantes, Josué Nathán Martínez-Castelán, José Saúl Muñoz-Reina, Víctor Manuel Silva-García","doi":"10.1016/j.jksues.2021.10.008","DOIUrl":"10.1016/j.jksues.2021.10.008","url":null,"abstract":"<div><p>One of the most challenging robotic manipulator designs is finding an appropriate balance between the shaking force and shaking moment because this reduces vibrations. Several approaches have been introduced in the last decades; nevertheless, some assumptions must be established to make such a balance. In this paper, a dynamic balancing approach is proposed. The main novelty is the no dependence on specific trajectories to be executed by the manipulator, which allows finding a design with a similar tradeoff in the balancing under robot configuration changes. Also, the proposal incorporates mass distribution and link shape in a single design procedure. The proposal is stated as a constrained nonlinear optimization problem and applied to a hybrid serial-parallel robotic manipulator. The use of different bio-inspired algorithms and one gradient one in the solution of the balancing problem reveals that differential evolution finds the most suitable design. Besides, comparative simulation results of the obtained design with other design approaches show that the obtained design presents the most suitable tradeoff between the shaking force and the shaking moment when the manipulator executes tasks with different operating velocities.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363921001471/pdfft?md5=51d478cab5965be086fbef0ec5d17ff8&pid=1-s2.0-S1018363921001471-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82570008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric vehicle speed tracking control using an ANFIS-based fractional order PID controller 使用基于 ANFIS 的分数阶 PID 控制器实现电动汽车速度跟踪控制

Journal of King Saud University, Engineering Sciences Pub Date : 2024-05-01 DOI: 10.1016/j.jksues.2022.01.001

Mary Ann George , Dattaguru V. Kamat , Ciji Pearl Kurian

{"title":"Electric vehicle speed tracking control using an ANFIS-based fractional order PID controller","authors":"Mary Ann George , Dattaguru V. Kamat , Ciji Pearl Kurian","doi":"10.1016/j.jksues.2022.01.001","DOIUrl":"10.1016/j.jksues.2022.01.001","url":null,"abstract":"<div><p>Electric vehicles (EVs) have assumed prominence due to their enhanced performance, efficiency, and zero carbon emission. This paper proposes an efficient adaptive neuro-fuzzy inference system (ANFIS) based fractional order PID (FOPID) controller for an EV speed tracking control driven by a DC motor. The optimal controller parameters of the FOPID controller are found via an Ant Colony Optimization (ACO) method. The ANFIS controllers are well trained, tested, and validated using the data set sextracted from the fuzzy-based controllers. The performance and accuracy of the ANFIS model are evaluated using statistical parameters such as mean square error (MSE), coefficient of correlation (R), and root mean square error (RMSE). The controller performance, energy consumption, and robustness are tested using the new European drive cycle (NEDC) test. The efficacy of the ANFIS-based controller is demonstrated by comparing its performance with properly tuned fuzzy-based controllers. The proposed controller shows robustness towards external disturbances and offers promising EV speed regulation control. The comparative results illustrate the superior performance of ANFIS-based FOPID controller with high prediction and low error rates. MATLAB- Simulink platform is used for system modeling, controller design, and numerical simulation.</p></div>","PeriodicalId":35558,"journal":{"name":"Journal of King Saud University, Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1018363922000010/pdfft?md5=44ca6add4ac56b09fc73a41dfcc0dd3f&pid=1-s2.0-S1018363922000010-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78057662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0