Applications in engineering science最新文献_第8页

Shrinkage properties of steel fiber reinforced concrete- A review 钢纤维混凝土的收缩性能综述

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-25 DOI: 10.1016/j.apples.2025.100244

Mohammad Abedi , Terje Kanstad , Stefan Jacobsen , Guomin Ji

{"title":"Shrinkage properties of steel fiber reinforced concrete- A review","authors":"Mohammad Abedi , Terje Kanstad , Stefan Jacobsen , Guomin Ji","doi":"10.1016/j.apples.2025.100244","DOIUrl":"10.1016/j.apples.2025.100244","url":null,"abstract":"<div><div>Cracks induced by concrete shrinkage may allow corrosive agents to penetrate steel reinforced concrete and deteriorate the reinforcement. Adding randomly distributed steel fiber to concrete can reduce shrinkage and prevent the initiation of cracking, along with improving tensile strength and ductility. Autogenous shrinkage and drying shrinkage are the most important types of shrinkage in steel fiber reinforced concrete (SFRC). There is a general lack of knowledge related to the autogenous and drying shrinkage of SFRC. In the paper, the main factors that affect the autogenous shrinkage and drying shrinkage of SFRC are thoroughly examined through literature review. These factors include fiber volume, fiber geometry, curing method, water binder ratio (w/b), expansive agent, shrinkage mitigation, supplementary cementitious material (SCM), admixtures and hybridizing different fiber materials. It is concluded that increasing fiber volume up to some optimal volume, using expansive agents and shrinkage mitigation, as well as hybridizing different fibers, can reduce markedly the drying shrinkage. Furthermore, the water binder ratio, curing method and presence of silica fume, fly ash, and ground granulated blast furnace slag (GGBFS) influence shrinkage development in SFRC. In the last part, models predicting the autogenous and drying shrinkage of SFRC are discussed and new research is proposed.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100244"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535506","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

Neural network-based metamodel for scaffolding behavior: Application for structural load analysis and safety enhancement 基于神经网络的脚手架行为元模型：在结构荷载分析和安全性增强中的应用

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-21 DOI: 10.1016/j.apples.2025.100240

Mohamad Al Omari , Mojtaba Eslahi , Rani El Meouche , Amine Ammar , Laure Ducoulombier , Laurent Guillaumat

{"title":"Neural network-based metamodel for scaffolding behavior: Application for structural load analysis and safety enhancement","authors":"Mohamad Al Omari , Mojtaba Eslahi , Rani El Meouche , Amine Ammar , Laure Ducoulombier , Laurent Guillaumat","doi":"10.1016/j.apples.2025.100240","DOIUrl":"10.1016/j.apples.2025.100240","url":null,"abstract":"<div><div>Scaffolding safety remains a critical challenge in construction, contributing significantly to site accidents and injuries. This study addresses the issue by developing a metamodel to simulate scaffolding behavior under dynamic loads, such as wind and worker activities, to prevent failure and enhance structural reliability. A finite element model (FEM) was developed to analyze 30,000 scenarios, significantly reducing the time required for structural assessments. To optimize efficiency further, a neural network was trained to accurately predict scaffolding responses, achieving an impressive R<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span> value of 0.9996, thus minimizing reliance on time-intensive FEM simulations. While not a full digital twin implementation, this research establishes a strong foundation for integrating such technology in the future. By demonstrating the potential of metamodeling for improving safety and efficiency, the study offers valuable insights for advancing digital solutions in construction safety and sets the stage for further exploration of digital twin systems in the industry.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100240"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480292","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

Improved YOLOv5-based multi-crack detection in concrete wall surfaces 改进的基于yolov5的混凝土墙体多裂纹检测

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-29 DOI: 10.1016/j.apples.2025.100247

Remya Elizabeth Philip , Diana Andrushia A , N Anand , Mervin Ealiyas Mathews , M.Z. Naser , Eva Lubloy

{"title":"Improved YOLOv5-based multi-crack detection in concrete wall surfaces","authors":"Remya Elizabeth Philip , Diana Andrushia A , N Anand , Mervin Ealiyas Mathews , M.Z. Naser , Eva Lubloy","doi":"10.1016/j.apples.2025.100247","DOIUrl":"10.1016/j.apples.2025.100247","url":null,"abstract":"<div><div>In engineering and infrastructure management, it is essential to ensure the safety and longevity of structures. This can be carried out by properly detecting and monitoring surface cracks. From this lens, this paper presents a novel method for identifying surface cracks using the YOLOv5 (You Only Look Once) deep learning architecture to provide real-time object detection capabilities. First, the YOLOv5 was used with predefined hyperparameters to evaluate its pre-trained knowledge in concrete cracking. Then, the YOLOv5 architecture was fine-tuned to accommodate the specific characteristics of surface cracks within concrete structural components. Finally, the model's backbone was replaced with ResNet-50, and its performance was examined. The experiments in this study involved a diverse dataset of surface crack images and aimed to compare the performance of the three approaches in terms of Precision, Recall, and mean Average Precision metrics. Our findings indicate that YOLOv5-based approaches possess good surface crack identification, with the backbone replacement approach demonstrating the potential for improved adaptability to various structural environments. By combining the capabilities of YOLOv5 and the training strategies, the approach enhances the accuracy and reliability of the surface crack detection systems, resulting in the overall safety and durability of critical infrastructure.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100247"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557321","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

Solving an inverse problem with four unknown boundary conditions in a lid-driven cavity with heated walls using the levenberg-marquardt method 用levenberg-marquardt方法求解带有加热壁的盖驱动腔中四个未知边界条件的逆问题

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-26 DOI: 10.1016/j.apples.2025.100245

Mojtaba Khosravi, Mohammad Mohammadiun, Hamid Mohammadiun, Mohammad hossein Dibaei bonab, Vali parvaneh

{"title":"Solving an inverse problem with four unknown boundary conditions in a lid-driven cavity with heated walls using the levenberg-marquardt method","authors":"Mojtaba Khosravi, Mohammad Mohammadiun, Hamid Mohammadiun, Mohammad hossein Dibaei bonab, Vali parvaneh","doi":"10.1016/j.apples.2025.100245","DOIUrl":"10.1016/j.apples.2025.100245","url":null,"abstract":"<div><div>This study investigates the application of the Levenberg-Marquardt method in solving inverse heat transfer problems for a lid-driven cavity with four unknown thermal boundary conditions. The direct problem is solved using computational fluid dynamics (CFD) techniques implemented in OpenFOAM, employing the URANS equations. The numerical framework is first validated against experimental data from literature for a cavity with known boundary conditions. The inverse analysis focuses on simultaneously estimating four wall temperatures using temperature measurements at various sensor locations. The effects of sensor quantity and placement, algorithm parameters (fractional increment and damping coefficient), and measurement noise on the solution accuracy are systematically examined. The algorithm demonstrates robust convergence using a fractional increment of 0.0001 and an initial damping value of 1.0. It also maintains stability and accuracy even when measurement noise reaches up to 10 % of the maximum temperature difference. Under various conditions, the proposed approach consistently converges in approximately 12 iterations, confirming its effectiveness for simultaneously estimating multiple thermal boundary conditions in enclosed cavities. This study contributes to the development of reliable inverse methods for industrial applications involving natural convection in temperature-controlled chambers.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100245"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549802","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

Microstructure and tribological characterization of thin wall of bimetallic austenitic steel fabricated through wire arc additive manufacturing (WAAM) 电弧增材制造（WAAM）双金属奥氏体钢薄壁的显微组织和摩擦学特性

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-10 DOI: 10.1016/j.apples.2025.100241

Rupendra S. Tanwar, Suyog Jhavar

{"title":"Microstructure and tribological characterization of thin wall of bimetallic austenitic steel fabricated through wire arc additive manufacturing (WAAM)","authors":"Rupendra S. Tanwar, Suyog Jhavar","doi":"10.1016/j.apples.2025.100241","DOIUrl":"10.1016/j.apples.2025.100241","url":null,"abstract":"<div><div>Austenitic stainless steels, such as SS316L, are widely employed in thin rotary components like blades and impellers due to their exceptional thermal resistance, wear resistance, and corrosion properties. This study examines the dry sliding wear behaviour of wire arc additive manufactured (WAAM) austenitic bimetallic structures (BMS) comprising SS316L and SS309. Wear tests were conducted using a pin-on-disc tribometer with a flat-on-flat configuration, utilizing 3 mm square pins extracted from distinct regions of the base metals and their interface, tested against an EN31 steel disc (61 HRC). The initial average coefficient of friction (CoF) for SS316L ranged between 0.41 and 0.64, whereas the SS316L-SS309 interface demonstrated a lower CoF of 0.42 to 0.58, attributed to increased ferrite content and hardness during the initial running-in phase. X-ray diffraction results revealed the formation of iron oxides and chromium oxide on the worn surface of the plate. Microstructural and energy dispersive spectroscopy (EDS) analyses indicated that the higher ferrite content in SS309 and interface regions significantly enhanced wear resistance compared to SS316L. The wear mechanism transitioned from combined abrasive-adhesive wear to adhesive wear with plastic deformation and severe material loss. Analysis of wear debris confirmed progressive oxide layer removal during sliding, leading to increased wear. The superior hardness and ferritic phase in SS309 and interface regions contributed to improved wear resistance, underscoring the potential of austenitic BMS for applications requiring high wear performance. This study emphasizes the critical role of microstructural tailoring in optimizing wear characteristics in WAAM-fabricated austenitic BMS components.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100241"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298646","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

Coupling FVM and FEM using coupling code with Code Saturne and Code ASTER 用code Saturne和code ASTER耦合代码耦合FVM和FEM

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-19 DOI: 10.1016/j.apples.2025.100237

Dimitri Vesvard , Philippe Karamian-Surville , Nizar Abcha

引用次数: 0

Experimental study on the influence of ultrasonic surface treatment on freeze-thaw and carbonation resistance properties of concrete 超声波表面处理对混凝土抗冻融和抗碳化性能影响的试验研究

IF 2.1

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-08-04 DOI: 10.1016/j.apples.2025.100251

Ruiting Ba , Wei Chen , Mingshan Li , Yong Shi

{"title":"Experimental study on the influence of ultrasonic surface treatment on freeze-thaw and carbonation resistance properties of concrete","authors":"Ruiting Ba , Wei Chen , Mingshan Li , Yong Shi","doi":"10.1016/j.apples.2025.100251","DOIUrl":"10.1016/j.apples.2025.100251","url":null,"abstract":"<div><div>Cement concrete, the predominant modern construction material, exhibits poor durability owing to its porous microstructure. Surface treatment has emerged as an effective method to enhance concrete's durability. While surface coating or modification techniques are commonly employed, they necessitate additional materials, thereby increasing engineering costs. In contrast, ultrasonic surface treatment(UST) of concrete offers a novel physical approach that requires no supplementary materials, rendering it a cost-effective and promising alternative. However, the frost resistance of ultrasonically treated concrete, particularly in the context of extensive use of supplementary cementitious materials, has not been extensively investigated in prior research.</div><div>This study investigates the use of UST to enhance the frost and carbonation resistance of concrete. Results show that UST significantly improves both properties. Specifically, the relative dynamic elastic modulus of treated concrete increased by 11.37%-19.31%, mass loss rate decreased by 32.25%-52.86%, carbonation depth reduced by 24.22%-26.16%, and the carbonation coefficient dropped from 3.302–3.463 to 2.357–2.441. These enhancements are attributed to the refinement of the concrete surface microstructure and the improvement of defects at the matrix-aggregate interface due to UST. Consequently, UST represents a beneficial complement to conventional air entrainment and coating methods for enhancing the frost and carbonation resistance of concrete.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100251"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766822","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

Finite element study of a vertical rotor with tilting pads supported by an elastic structure 弹性结构支撑倾斜盘垂直转子的有限元研究

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-06-27 DOI: 10.1016/j.apples.2025.100242

Simon Pääjärvi , Gudeta Benti , Jan-Olov Aidanpää , Rolf Gustavsson

{"title":"Finite element study of a vertical rotor with tilting pads supported by an elastic structure","authors":"Simon Pääjärvi , Gudeta Benti , Jan-Olov Aidanpää , Rolf Gustavsson","doi":"10.1016/j.apples.2025.100242","DOIUrl":"10.1016/j.apples.2025.100242","url":null,"abstract":"<div><div>Although the dynamics of vertical rotor bearing systems have been studied, the interaction between vertical rotors, bearings, and supporting structures - such as casings, bearing brackets, and foundations, remains less explored. This study presents a combined experimental and numerical investigation of a coupled vertical rotor system, incorporating a nonlinear, speed- and eccentricity-dependent bearing. The novelty lies in the description of a complex, vertical, rotor-bearing-support system incorporating a nonlinear journal bearing model, to capture the effects of the rotor’s vertical orientation, as typical of hydropower applications. The system features an elastic mid-span rotor supported by a flexible tower structure. The four-shoe tilting pad bearings impose significant stiffness variations and nonlinearities, connecting the stationary and rotating components. Modal analysis identifies the critical speeds of the flexible supporting structure, and simulations in the time domain are conducted for various run-up conditions, focusing on the bearing response across the structure’s first two natural frequencies. The results show qualitative and quantitative agreement between the experimental and simulated responses, highlighting the distinct dynamic behaviors of the upper and lower bearings. The bearing response at the structure’s first critical speed is studied and demonstrates improved accuracy during critical conditions. This model builds on established methods to accurately represent vertical rotor dynamics with nonlinear, eccentricity- and speed-dependent bearing models, while extending its applicability to more complex systems by incorporating bearing support flexibility, effectively providing a framework for simulating systems such as complete hydropower units.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100242"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522662","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

Comparison of hydraulic and pneumatic flow in a proportional solenoid valve 比例电磁阀中液压流量与气动流量的比较

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-07-19 DOI: 10.1016/j.apples.2025.100248

Joachim Daehn , Andreas Wierschem , Eberhard Ultsch

{"title":"Comparison of hydraulic and pneumatic flow in a proportional solenoid valve","authors":"Joachim Daehn , Andreas Wierschem , Eberhard Ultsch","doi":"10.1016/j.apples.2025.100248","DOIUrl":"10.1016/j.apples.2025.100248","url":null,"abstract":"<div><div>In serial testing of hydraulic solenoid valves as part of the manufacturing process, the use of liquid mediums poses various challenges, including inconvenient part handling, frequent exchange of fluids and expensive maintenance of machinery. The present study investigates the feasibility of using gaseous mediums as an alternative for hydraulic testing without compromising established hydraulic testing standards. Using an exemplary 2/2 hydraulic proportional valve, we carried out experiments using both gaseous and liquid mediums. The experimental data indicates a consistent correlation between the two fluids across relevant pressure levels, alongside an accurate reproduction of key variables. Based on these results, a generalized methodology for determining the applicability of pneumatic methods to test similar hydraulic valve types is proposed. Corresponding Computational Fluid Dynamics (CFD) analyses reveal that supersonic velocities occur in the contraction area during pneumatic testing, resembling characteristics often found in supersonic nozzle flows. The simulations further indicate considerable differences in the flow-induced forces among the two fluids in some regions within the flow domain. Nonetheless, critical testing parameters are not affected by these effects, therefore the correlation is preserved.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100248"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694404","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

Digitizing SMEs in the EU: A scalable model for retrofitting machinery to Industry 4.0 欧盟中小企业数字化：工业4.0机械改造的可扩展模型

IF 2.2

Applications in engineering science Pub Date : 2025-09-01 Epub Date: 2025-05-26 DOI: 10.1016/j.apples.2025.100230

Gabriel Gašpar , Roman Budjač , Maroš Valášek , Martin Bartoň , Tomáš Meravý , Maximilián Strémy

{"title":"Digitizing SMEs in the EU: A scalable model for retrofitting machinery to Industry 4.0","authors":"Gabriel Gašpar , Roman Budjač , Maroš Valášek , Martin Bartoň , Tomáš Meravý , Maximilián Strémy","doi":"10.1016/j.apples.2025.100230","DOIUrl":"10.1016/j.apples.2025.100230","url":null,"abstract":"<div><div>Small and Medium-sized Enterprises (SMEs) have faced significant economic challenges since the COVID-19 pandemic, compounded by high inflation, rising energy costs, and the cessation of government financial support. War-related disruptions in Europe have further exacerbated these issues. As the backbone of the European economy, SMEs must embrace Industry 4.0 to remain competitive. However, many lack the resources or expertise to adopt smart technologies. This article proposes a cost-effective, scalable model to guide SMEs in transitioning towards Industry 4.0 by retrofitting existing machinery. By assessing machinery readiness and identifying critical areas for digitization, the model enables targeted investments that optimize production and reduce costs. A gradual, tailored approach ensures alignment with SMEs’ financial and technical capacities, fostering modernization and long-term growth. The successful implementation of the AFB production system highlights the feasibility of retrofitting existing systems to meet modern manufacturing demands.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100230"},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168830","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