Arabian Journal for Science and Engineering最新文献_第4页

Optimizing of Novel Magnetic Field-Assisted Electrical Discharge Turning Parameters for Machining EN24 Steel Alloy Using Response Surface Methodology and MCDM-Based CRITIC–TOPSIS Method 利用响应面方法和基于 MCDM 的 CRITIC-TOPSIS 方法优化加工 EN24 钢合金的新型磁场辅助放电车削参数

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-04 DOI: 10.1007/s13369-024-09537-x

Roopak Varshney, Param Singh

{"title":"Optimizing of Novel Magnetic Field-Assisted Electrical Discharge Turning Parameters for Machining EN24 Steel Alloy Using Response Surface Methodology and MCDM-Based CRITIC–TOPSIS Method","authors":"Roopak Varshney, Param Singh","doi":"10.1007/s13369-024-09537-x","DOIUrl":"https://doi.org/10.1007/s13369-024-09537-x","url":null,"abstract":"This study employs a multi-criteria decision-making (MCDM) technique to identify the optimal parameters for the electrical discharge turning (EDT) process used to machine cylindrical EN24 steel alloy. EDT, a significant configuration of EDM, offers a valuable approach for machining cylindrical workpieces. A face-centred central composite design (FCCCD) is employed to establish the experimental design. The CRITIC–TOPSIS method is subsequently implemented to optimize the input parameters: gap current (Ig), pulse on time (Ton), rotational speed (N), and magnetic field assistance (B). Each parameter is investigated at three distinct levels. The study focuses on four response variables: material removal rate (MRR), tool wear rate (TWR), overcut (OC), and surface roughness (Ra). Analysis of variance (ANOVA) is conducted to assess the influence of each input parameter on the observed responses. Criteria importance through inter-criteria correlation (CRITIC) is employed to assign weights to each response, followed by applying the technique for order of preference by similarity to ideal solution (TOPSIS) to identify the ideal machining parameters. The results indicate that run number 16 (Ig: 16A, Ton: 60 µs, N: 1400 RPM, and B: 0.30 T) represents the optimal configuration. Scanning electron microscopy (SEM) analysis further corroborates this finding, confirming superior surface quality compared to other experimental runs.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"24 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pure and Ce-Doped MnO2–ZnO Nanocomposites for Colossal Dielectric Energy Storage and Gas Sensing Applications 纯锰氧化物和掺杂铈的锰氧化物-氧化锌纳米复合材料在巨型介质储能和气体传感中的应用

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-03 DOI: 10.1007/s13369-024-09532-2

Ghayah M. Alsulaim, Shada A. Alsharif, Kholoud M. Alnahdi, Hanan A. Althikrallah

{"title":"Pure and Ce-Doped MnO2–ZnO Nanocomposites for Colossal Dielectric Energy Storage and Gas Sensing Applications","authors":"Ghayah M. Alsulaim, Shada A. Alsharif, Kholoud M. Alnahdi, Hanan A. Althikrallah","doi":"10.1007/s13369-024-09532-2","DOIUrl":"https://doi.org/10.1007/s13369-024-09532-2","url":null,"abstract":"ZnO-based nanocomposites have attracted a great attention for energy storage systems and detection of volatile organic compounds. In this study, pure and Ce-doped MnO2–ZnO composites were fabricated through a co-precipitation method. The results of X-ray diffraction verified the formation of tetragonal MnO2 and hexagonal ZnO phases. Scanning electron microscope images of pure and Ce-doped MnO2–ZnO composites displayed the formation of rods and semi-spherical particles. The pure and Ce-doped MnO2–ZnO composites exhibited semi-stable colossal dielectric constant values of 2.12 × 105 and 1.36 × 105, respectively, at a frequency of 45 Hz, which are proper for capacitive energy storage applications. Gas sensing measurements demonstrated that Ce-doped MnO2–ZnO composite has a high sensitivity toward 100 ppm acetone gas at operating temperature of 240 °C, while for 100 ppm ethanol this sensor has a high sensitivity at 180 °C. As a result, through adjusting the operating temperature, the selectivity of Ce-doped MnO2–ZnO sensor can be controlled for acetone and ethanol gases. Furthermore, this sensor possesses good selectivity and stability as well as proper linear relations between the sensitivity and concentrations of acetone and ethanol gases.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"62 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of a Conductive Recycled Mortar as an Anode in the Electrochemical Chloride Extraction in Reinforced Concrete 在钢筋混凝土电化学提取氯化物过程中使用导电回收砂浆作为阳极

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-02 DOI: 10.1007/s13369-024-09501-9

M. J. Pellegrini-Cervantes, C. A. Espinoza-Moreno, M. Rodriguez-Rodriguez, C. P. Barrios-Durstewitz, S. P. Arredondo-Rea, R. Corral-Higuera, H. J. Peinado-Guevara, M. J. Chinchillas-Chinchillas, G. Fajardo-San-Miguel

{"title":"Use of a Conductive Recycled Mortar as an Anode in the Electrochemical Chloride Extraction in Reinforced Concrete","authors":"M. J. Pellegrini-Cervantes, C. A. Espinoza-Moreno, M. Rodriguez-Rodriguez, C. P. Barrios-Durstewitz, S. P. Arredondo-Rea, R. Corral-Higuera, H. J. Peinado-Guevara, M. J. Chinchillas-Chinchillas, G. Fajardo-San-Miguel","doi":"10.1007/s13369-024-09501-9","DOIUrl":"https://doi.org/10.1007/s13369-024-09501-9","url":null,"abstract":"This study advocates for the use of recycled materials, which are more environmentally sustainable as they decrease natural resource consumption. In this research, a mortar anode composed of recycled fine aggregate (RFA) from laboratory concrete blocks, carbon fiber (CF) waste from industrial processes, and graphite powder (GP) was developed, resulting in a conductive recycled mortar (CRM). The manufacturing process utilized Portland composite cement, RFA with a sand/cement ratio of 1.00, a water/cement ratio of 0.6, a GP/cement ratio of 0.50, CF comprising 0.5%, and carboxymethyl cellulose (CMC) comprising 0.4% by weight of cement. Chloride profiles indicated that the specimens with the CRM anode were effective, as the chlorides migrated into the mortar. For M0.5CF (2.81%) and M0.5CF0.5GP (3.72%) of free chlorides, the Ti–RuO2 mesh did not expel the chlorides but rather accumulated them at 1 cm from the surface, resulting in a negative efficiency (− 20.02%). However, at 1 cm from the cathode, the efficiency levels were comparable across the anodes: Ti–RuO2 mesh (84.54%), M0.5CF (84.76%), and M0.5CF0.5GP (81.11%), underscoring the potential of using a CRM anode for electrochemical chloride removal.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"22 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Efficient Corrosion Prediction Model Based on Genetic Feedback Propagation Neural Network 基于遗传反馈传播神经网络的高效腐蚀预测模型

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-02 DOI: 10.1007/s13369-024-09522-4

Ziheng Zhao, Elmi Bin Abu Bakar, Norizham Bin Abdul Razak, Mohammad Nishat Akhtar

{"title":"An Efficient Corrosion Prediction Model Based on Genetic Feedback Propagation Neural Network","authors":"Ziheng Zhao, Elmi Bin Abu Bakar, Norizham Bin Abdul Razak, Mohammad Nishat Akhtar","doi":"10.1007/s13369-024-09522-4","DOIUrl":"https://doi.org/10.1007/s13369-024-09522-4","url":null,"abstract":"Corrosion is one of the most significant challenges for oil pipelines. It can occur due to various factors such as moisture, oxygen, and contaminants in the oil. Corrosion weakens the pipeline material, leading to leaks, ruptures, and structural failure. To enhance the ability to decrease the corrosion problems of oil pipelines, an efficient Back Propagation Neural Network is developed to predict the corrosion rate and analyse the importance of the features that affect the corrosion. This method is based on the database generated by coupling an analytical corrosion rate model and Monte Carlo simulation by using Spearman’s (SP) correlation coefficient to generate the relevance between each feature, negating the feature variables with a strong correlation and then combining with a Genetic Algorithm (GA) and a Back Propagation (BP) Neural Network to build a regression prediction model. The proposed approach has been termed SP-GA-BP. The results showed that the proposed method can predict well with R2 = 0.99519 MAE = 0.18926 MSE = 0.0072213 RMSE = 0.084978, thereby indicating that the Temperature, CO2 Pressure, and Corrosion Inhibitor efficiency can affect the corrosion rate efficaciously. Furthermore, with the introduction of external interference, the results exhibited a high level of precision. The proposed method and the obtained results may provide a good reference value for oil pipeline maintenance.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"27 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Bi-functionalized Clay-Superabsorbent Polymer Nanocomposite for Improved Mechanical and Durability Properties of Cementitious Materials 研究双功能粘土-超吸水性聚合物纳米复合材料，以改善水泥基材料的力学性能和耐久性能

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-02 DOI: 10.1007/s13369-024-09525-1

V. S. Sujitha, B. Ramesh, Joseph Raj Xavier

{"title":"Investigation of Bi-functionalized Clay-Superabsorbent Polymer Nanocomposite for Improved Mechanical and Durability Properties of Cementitious Materials","authors":"V. S. Sujitha, B. Ramesh, Joseph Raj Xavier","doi":"10.1007/s13369-024-09525-1","DOIUrl":"https://doi.org/10.1007/s13369-024-09525-1","url":null,"abstract":"The impacts of incorporating silane-functionalized halloysite nanoclay (SNC) in sodium polyacrylamide (PA) superabsorbent polymer (SAP) and its reinforcement potential in cementitious materials are carefully investigated. Unlike previous studies, this work uniquely explored the dual functionality of SNC to enhance both the water absorption capacity and mechanical strength of SAPs and, subsequently, its reinforcing effects on cementitious materials. This study comprehensively examines the mechanical and durability characteristics of cement mortar and concrete when a small percentage of SNC/SAP composite is added at 0.2, 0.4, 0.6, and 0.8%. The optimum concentration of SNC/SAP composite in the cement mix was found to significantly improve the hydration of cement, thereby enhancing its mechanical properties and strength by filling the micropores. X-ray diffraction (XRD), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) analyses were carried out to characterize the surface morphology and its influence on cementitious materials. The results indicate that the SNC/SAP cementitious nanocomposite enhances the compressive, flexural, and tensile strengths by up to 54%, 63%, and 67%, respectively, compared to those of conventional mortar specimens at 56 days. Furthermore, shrinkage tests revealed the excellent water-holding capacity of the composite hydrogel, which promoted internal curing and reduced microcrack formation. The findings demonstrate that SNC not only improves the properties of SAP hydrogels but also significantly enhances the mechanical properties and durability of cementitious materials, making it a promising additive for protective cementitious coatings in buildings. This study addresses the critical need for durable, crack-resistant concrete, providing a novel approach to enhancing the longevity and performance of cementitious materials.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"37 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-disciplinary Analysis of Solar-Powered Unmanned Aerial Vehicles for Extended Endurance 太阳能无人飞行器续航能力的多学科分析

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-02 DOI: 10.1007/s13369-024-09400-z

Atousa Golmakani, Zoheir Saboohi, Nima Karimi

{"title":"Multi-disciplinary Analysis of Solar-Powered Unmanned Aerial Vehicles for Extended Endurance","authors":"Atousa Golmakani, Zoheir Saboohi, Nima Karimi","doi":"10.1007/s13369-024-09400-z","DOIUrl":"https://doi.org/10.1007/s13369-024-09400-z","url":null,"abstract":"Drones are extensively utilized in numerous critical applications today, necessitating high flight endurance for many tasks. As a result, solar unmanned aerial vehicles (UAVs) have gained considerable attention from researchers. This study presents the design of two UAVs with distinct wing configurations, both equipped with an equal number of solar cells. A numerical approach is employed to model these UAVs and calculate their aerodynamic coefficients. The power required for sustained level flight is determined using established aerodynamic equations. Additionally, solar cells are simulated in MATLAB/Simulink to investigate the impact of solar radiation on cell output power, current, and voltage. Different locations experience varying levels of solar radiation at specific times of the day, depending on their geographical coordinates and date. Consequently, this research examines the flight endurance of solar UAVs based on flight conditions and solar radiation availability in specific locations. In this paper, two different approaches for calculating the endurance parameter were introduced, and the achieved results are compared. Superior aerodynamic performance and a higher lift-to-drag ratio were observed for the UAV with a high AR. It is seen that reducing weight and distributing the same number of cells across the lower wing surface can significantly enhance flight endurance. In the best possible conditions in the considered place and time, the high AR UAV flies for 10 h and the medium AR UAV flies for 11 h.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"22 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eco-friendly Cadmium Removal Using Novel Modified Clay/Alginate Floatable Beads: A Sustainable Solution for Water Pollution Mitigation 使用新型改性粘土/海藻酸盐浮珠进行生态友好型镉去除：缓解水污染的可持续解决方案

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-09-02 DOI: 10.1007/s13369-024-09513-5

Hajar Abara, Hajar Saadani, Brahim Allaoui, Soukaina Akachar, Mohamed Hadri, Mohammadi Ahrouch, Abdeslam Barhoun, Khalid Draoui

{"title":"Eco-friendly Cadmium Removal Using Novel Modified Clay/Alginate Floatable Beads: A Sustainable Solution for Water Pollution Mitigation","authors":"Hajar Abara, Hajar Saadani, Brahim Allaoui, Soukaina Akachar, Mohamed Hadri, Mohammadi Ahrouch, Abdeslam Barhoun, Khalid Draoui","doi":"10.1007/s13369-024-09513-5","DOIUrl":"https://doi.org/10.1007/s13369-024-09513-5","url":null,"abstract":"Water contamination by heavy metals has become a very alarming issue in all industrialized countries. The present study explores the development of a sustainable and eco-friendly approach to removing cadmium from water sources. A simple method is applied to synthesize floatable beads from a combination of natural clay, alginate, and eco-friendly modifiers, which makes them highly effective at capturing cadmium ions from aqueous solutions. The chemical and physical properties of natural clay (NC) and R-(Clay/Alg@Fe–Ni) composite beads were assessed by several techniques (XRD, BET, FT-IR, SEM, and TGA/DTG). The effects of experimental factors were optimized to maximize the adsorption of Cd (II). Furthermore, the study evaluates the kinetic and equilibrium aspects of cadmium adsorption and assesses the performance of the adsorbents. The results reveal that the adsorption of Cd (II) is most accurately described by the Langmuir and Sips isotherm model and the pseudo-second-order (PSO) kinetic model. These observations imply that the adsorbent's surface exhibits a uniform adsorption behavior, with chemical adsorption primarily governing the adsorption mechanism under optimal conditions. The adsorption capacity (95.7 mg/g) of R-(Clay/Alg@Fe–Ni) is three times greater than that of the unmodified NC, representing an improvement of 64.28%. Inner-sphere complexes involving oxygen-containing functional groups, physical adsorption, ion exchange, and electrostatic interactions were the primary mechanisms for removing Cd (II) ions. Overall, this study indicates that the modified clay/alginate floatable beads exhibit remarkable efficiency in cadmium removal.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"81 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parametric Optimization of AWJM Using RSM-Grey-TLBO-Based MCDM Approach for Titanium Grade 5 Alloy 使用基于 RSM-Grey-TLBO 的 MCDM 方法对 5 级钛合金的 AWJM 进行参数优化

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-08-31 DOI: 10.1007/s13369-024-09500-w

Amit Kumar Dubey, Yogesh Kumar, Santosh Kumar, Avinash Ravi Raja

{"title":"Parametric Optimization of AWJM Using RSM-Grey-TLBO-Based MCDM Approach for Titanium Grade 5 Alloy","authors":"Amit Kumar Dubey, Yogesh Kumar, Santosh Kumar, Avinash Ravi Raja","doi":"10.1007/s13369-024-09500-w","DOIUrl":"https://doi.org/10.1007/s13369-024-09500-w","url":null,"abstract":"Abrasive water jet machining (AWJM) is an incredibly effective method for processing challenging materials, overcoming the obstacles encountered when working with them. High-pressure water combined with abrasive particles is used to erode and penetrate the workpiece material. Processing titanium grade 5 alloy can be a complex task, but it is possible to efficiently machine it using abrasive water jet machining. The study analyzes the impact of pressure (P), abrasive flow rate (AFRE), stand-off distance (SoD) and traverse speed (TRS). A Taguchi L25 array (orthogonal) was utilized for carrying out the experiments. The best process parameters were identified through response surface methodology in order to reduce processing time (PT) and surface roughness (SR), while increasing hardness (HRC). The results, including processing time, surface roughness, and hardness, were transformed into a composite grade through the application of grey relational analysis. The empirical model was formulated utilizing the teaching–learning-based optimization (TLBO) technique and the best process parameters were investigated using RSM-Grey-TLBO-based multi-criteria decision-making. The RSM-Grey-TLBO MCDM method proposes an optimized configuration for GRG (mean method) with parameters P = 320 MPa, SoD = 4 mm, TRS = 190 m/min, AFRE = 12 g/sec and for the weighted method of GRG with parameters P = 320 MPa, SoD = 8 mm, TRS-150 m/min, AFRE-9 g/sec. The percentage inaccuracies for the forecasted errors are 7.47% and 7.33% in GRG (mean method) and GRG (weighted method), respectively.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"12 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pseudo-Static Test of Buckling-Restrained Braces Using Friction Energy Consumption 利用摩擦能耗对屈曲约束支撑进行伪静态测试

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-08-31 DOI: 10.1007/s13369-024-09528-y

Yaxiong Liang, Xiaodong Li, Linghui Jiang

{"title":"Pseudo-Static Test of Buckling-Restrained Braces Using Friction Energy Consumption","authors":"Yaxiong Liang, Xiaodong Li, Linghui Jiang","doi":"10.1007/s13369-024-09528-y","DOIUrl":"https://doi.org/10.1007/s13369-024-09528-y","url":null,"abstract":"To achieve a controllable carrying and deformation capacity without needing post-earthquake replacement, this study introduces a novel design for buckling-restrained braces, leveraging friction energy dissipation. The braces comprise four integral components: an inner steel tube, a high-strength compression spring, a friction plate, and an outer steel tube. An axial cyclic loading test conducted on three distinct sets of specimens with varied components investigates the carrying capacity, deformation capacity, and energy dissipation capacity of the buckling-restrained braces. Furthermore, an analysis is performed to assess the influence of the high-strength compression spring and friction plate material on the overall performance of the buckling-restrained braces. The test results demonstrate that, in comparison with the traditional buckling restrained brace, the friction buckling restrained brace exhibits the following advantages: (1) The hysteresis curve of the friction dissipative buckling restrained brace exhibits superior coverage compared to that of the traditional buckling restrained brace; (2) the FBRB demonstrates enhanced load-carrying, deformation, and energy dissipation capabilities compared to the BRB; and (3) the FBRB exhibits a distinctive axial adjustment capacity due to the incorporation of spring members, which can extend the service life of the member. The findings indicate that this type of buckling-restrained brace exhibits an adjustable carrying and deformation capacity, a complete hysteretic curve, and no buckling of the core member under compression. The application of these braces proves effective in significantly reducing the cost of structural rehabilitation post-earthquake.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"24 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of a 0.2V 2.08nW 10-bit 1kS/s High Energy Efficiency SAR ADC with Dummy Capacitor Splitting Technique for Biomedical Applications 利用虚拟电容分流技术设计用于生物医学应用的 0.2V 2.08nW 10 位 1kS/s 高能效 SAR ADC

IF 2.9 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-08-31 DOI: 10.1007/s13369-024-09459-8

Zahra Mehrabi Moghadam, Mohammad Reza Salehi, Ebrahim Abiri

{"title":"Design of a 0.2V 2.08nW 10-bit 1kS/s High Energy Efficiency SAR ADC with Dummy Capacitor Splitting Technique for Biomedical Applications","authors":"Zahra Mehrabi Moghadam, Mohammad Reza Salehi, Ebrahim Abiri","doi":"10.1007/s13369-024-09459-8","DOIUrl":"https://doi.org/10.1007/s13369-024-09459-8","url":null,"abstract":"This paper presents an ultra-low-voltage 10-bit successive approximation-register analog-to-digital converter (SAR ADC) based on the binary search algorithm for biomedical applications. An energy-efficient DAC switching scheme for a fully differential SAR ADC is proposed, which achieves a 99.8% reduction in DAC switching energy compared to conventional SAR ADC. In this design, by using a dummy capacitor split technique, an attempt has been made to reduce the capacitor of the most significant bit, resulting in a 92.87% reduction in the total number of capacitors compared to conventional design. In the proposed structure, the common-mode voltage of the comparator is approximately constant. The maximum voltage variation in the proposed switching scheme is Vref/2. Additionally, power consumption has been reduced by implementing the power gating technique in the control logic part. The proposed converter with a sampling frequency of 1 kS/s and a supply voltage of 0.2 V has been designed and simulated in TSMC 65nm CMOS technology. Both analytical calculations and simulation results confirm the effectiveness of the proposed switching scheme. Ultimately, the proposed scheme achieves a power consumption of 2.08 nW and a Figure of Merit (FoM) of 5.39 fJ/conversion-step. In comparison with the state-of-the-art, the proposed design has demonstrated excellent performance in achieving optimal power.","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"25 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0