Article
Chemistry, Analytical
Wei Yu, Binghai Lyu, Qianfa Deng, Chengwu Wang
Summary: This study aims to establish the best mathematical control model of the rotation speed curve of the inner and outer discs in the lower grinding disc to ensure the quality of three-body coupling grinding. The optimization of the rotation speed curve was studied, and the third speed curve combination was found to have the best grinding uniformity. It was also determined that the ball shape and sphericity deviation (SPD) were more accurate than the standard deviation (STD) of the two-dimensional trajectory point distribution.
Article
Automation & Control Systems
Jiabin Xu, Qiongyi He, Xiangyu Zhang, Yang Yu, Dongyu Tian, Yingjie Li, Feihu Zhang
Summary: In this study, a satisfactory precision grinding model for engineering applications is proposed to explain the grinding process of microdiameter YAG optical crystal materials. Experimental parameters are designed to regulate the ceramic base grinding wheel axis, and controlling clearance and eccentricity adjusts the grinding depth and surface finish. The study successfully solves the challenges and technical issues of YAG optical crystal material microdiameter precision grinding.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Bing Guo, Qingyu Meng, Guicheng Wu, Qingliang Zhao, Shuai Li
Summary: The research focuses on the precision grinding of micro-tooth internal threads using coarse-grains CBN wheels. The study provides optimal parameters and machining conditions for achieving high precision and hardness in internal threads.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Chemistry, Multidisciplinary
Galiya Abdilova, Zhadra Sergibayeva, Duman Orynbekov, Merey Shamenov, Gulmira Zhumadilova, Anara Bakiyeva, Nurbolat Mukashev, Assyl Bayadilova, Damir Dukenbayev
Summary: This study constructed an oil pressing machine for sunflower seeds and investigated the effects of different grinding degrees and screw rotation speeds on pressing efficiency. The results showed that increasing the grinding degree and screw rotation speed led to higher oil yield, with the optimal conditions being a grinding degree of 4 mm and a screw rotation speed of 60 rpm. The study also found that these factors influenced energy consumption, cake density, and cake temperature.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Wenkai Zhao, Ruijun Li, Liuhui Duan, Zhenying Cheng, Rongjun Cheng, Qiangxian Huang, Kuang-Chao Fan
Summary: A new method and system for radius and roundness measurement of microspheres have been proposed and developed in this article. Experimental results show that they can be used in the precision contact measurements of parts with microcircular characteristics.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Mechanical
Penghai Zhang, Yizhen Peng
Summary: The study indicates that the motion accuracy of hydrostatic journal bearings mainly decreases with increasing rotation speed. The rotation speed affects the error motion amplitude but does not affect the selective action of the shaft wave number affecting the error motion. The accuracy theory can be used to predict error motion and choose the optimized recess number.
NONLINEAR DYNAMICS
(2021)
Article
Green & Sustainable Science & Technology
Bingzhao Gao, Dele Meng, Wentong Shi, Wenqi Cai, Shiying Dong, Yuanjian Zhang, Hong Chen
Summary: This article analyzes the advantages and development trends of two-speed transmissions for electric vehicles (EVs), and provides a necessity index for adopting two-speed transmissions in different types of vehicles. It predicts that two-speed transmissions will gradually be applied in various types of vehicles in the coming years.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Crystallography
Shanshan Chen, Shuming Yang, Chi Fai Cheung, Tao Liu, Duanzhi Duan, Lai-ting Ho, Zhuangde Jiang
Summary: This study establishes a new theoretical model for surface generation in ultra-precision parallel grinding by considering the arc-shaped effect, synchronous vibration of the wheel, and cutting profile interference. The mechanism of ground surface generation and grinding ductility of SiC ceramics are analyzed. The results show that the vibration patterns of spiral and straight-line modes are the main features of the machined surface, and their continuity is mainly affected by the phase shift. Furthermore, the grinding ductility is more significant for the in-phase shift condition than for the out-of-phase shift condition due to the continuously decreasing relative linear speed between the wheel and workpiece.
Article
Engineering, Electrical & Electronic
Baogang Li, Jinbo Pan, Yuhuan Li, Kun Ni, Wanyou Huang, Hanjun Jiang, Fuhao Liu
Summary: This paper proposes a transmission speed ratio optimization method based on the life cycle speed utilization rate of general-purpose agricultural tractors. The speed ratio parameters are optimized and solved using the genetic algorithm in multi-gear power-shift transmissions of agricultural tractors. The results show that the optimized speed ratio has more and denser gears in the common operating speed range while ensuring the general-purpose agricultural tractors' use requirements. Compared to commonly used geometric series speed ratios, tractors using the optimized speed ratio parameters in this paper can significantly improve fuel economy. This provides a practical method reference for optimizing speed ratios in multi-gear gearboxes with complex structures.
Article
Engineering, Electrical & Electronic
Daniel Slomovitz, Alejandro Santos, Rogelio Sandler, Gabriela Barreto
Summary: This article presents the design of a simple construction two-stage current transformer with ratios ranging from 5 A:5 A to 2000 A:5 A, which can be self-calibrated. New methods are proposed to calculate and compensate for errors, reducing ratio error and phase displacement to few mu A/A and mu rad. The UTE standard confirmed the transformer's calculated performance in an international comparison.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Electrical & Electronic
Hongwen Ma, Shaoming Yao, Kuiyu Li
Summary: The stress nonuniformity on the loading neck is a crucial factor for the local force error of an individual multiaxis force sensor in a distributed multiaxis force sensing system. The stress correlation coefficient is used to measure this nonuniformity, which decreases with increasing loading offset. A fully constrained high-relative-stiffness-ratio structure is important to achieve a good stress correlation coefficient in the MAFS under various external loads. The use of an MAFS with two loading necks, along with a thin and long loading neck distance and a high stiffness loading frame, is crucial for the high-relative-stiffness-ratio structure.
IEEE SENSORS JOURNAL
(2023)
Review
Engineering, Geological
K. Ganjalipour
Summary: This study focuses on the errors in inclinometer systems and introduces methods for correction, presenting common errors such as data bias, rotation error of sensor axis, and probe positioning error in depth. By testing inclinometer casings of Darian Dam, the author demonstrates how to correct these errors, including bias error introduced by Mickelson and depth error in probe positioning. The proposed method modifies base data and relationships provided by the author to recalculate displacements effectively.
GEOTECHNICAL AND GEOLOGICAL ENGINEERING
(2021)
Article
Computer Science, Hardware & Architecture
Rahul Vaze, Jayakrishnan Nair
Summary: This article investigates the speed scaling problem in a multiple server setting with tunable speeds. Each server can adjust its speed, but it incurs energy cost. The article proposes simple algorithms with competitive ratios, which depend on the power cost function and the ratio of task sizes.
IEEE-ACM TRANSACTIONS ON NETWORKING
(2022)
Article
Engineering, Multidisciplinary
Sani Salihu Abubakar, Michael B. C. Khoo, Sajal Saha, Adamu Abubakar Umar, Wai Chung Yeong
Summary: This study introduces the RS-RZ ME chart which performs better than existing charts in the literature when dealing with measurement errors. The efficiency of the RS-RZ ME scheme increases as the parameters controlling accuracy and precision error of the measurement system increase, and also with a higher correlation coefficient between variables X and Y.
QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
(2022)
Article
Computer Science, Hardware & Architecture
Raja K. Sekar, R. Marshal, G. Lakshminarayanan
Summary: The study discusses an architecture for realizing a serial-parallel multiplier in quantum-dot cellular automata (QCA), resulting in an efficient 4-bit multiplier. The proposed multiplier utilizes efficient shift registers and adders to increase circuit reliability.
IEEE EMBEDDED SYSTEMS LETTERS
(2022)
Article
Biotechnology & Applied Microbiology
Lili Li, Kun Wang, Liangliang Wei, Qingliang Zhao, Huimin Zhou, Junqiu Jiang
Summary: This study investigated and optimized the mixing performance of gas and non-Newtonian fluid in high solids anaerobic digestion system using CFD simulation, exploring the impact of factors such as mixing energy magnitude, input pattern, and nozzle inlet angle on mixing effectiveness. Results showed that gas dispersed inlet achieved better mixing under specific energy conditions, emphasizing the significance of mixing performance optimization for the operation of high solids anaerobic digestion systems.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Qi Qiu, Yali Huang, Bei Zhang, Doudou Huang, Xin Chen, Zhongxiong Fan, Jinpei Lin, Wensheng Yang, Kai Wang, Ning Qu, Juan Li, Zhihong Li, Jingyu Huang, Shenrui Li, Jiaxing Zhang, Gang Liu, Gang Rui, Xiaoyuan Chen, Qingliang Zhao
Summary: This study proposes a dual-modality photoacoustic-ultrasound (PA-US) imaging approach to noninvasively detect embryonic abnormalities caused by methylmercury chloride (MMC). The results show differences in ultrasound, photoacoustic signal intensity, blood oxygen saturation, and hemoglobin content between control and treated embryos at different developmental stages. The noninvasive PA-US imaging method is consistent with traditional histological methods in detecting early developmental defects.
ENVIRONMENTAL HEALTH PERSPECTIVES
(2022)
Article
Automation & Control Systems
Amr Monier, Bing Guo, Qingliang Zhao, T. S. Mahmoud
Summary: This work studies the ability to reshape grinding wheels with special and modern geometries to produce advanced structured surfaces. A mathematical model is built to relate the wheel geometry, pattern geometries, produced surfaces, and grinding parameters. Different regular and irregular geometries are designed and simulated to investigate their effects on the structured surfaces obtained under different working conditions. The experimental results validate the dependability of the method for machining advanced structured surfaces using grinding processes.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jianju Li, Haizhou Yang, Kena Qin, Liangliang Wei, Xinhui Xia, Fengyi Zhu, Xuefei Tan, Chonghua Xue, Qingliang Zhao
Summary: This study investigated the effect of pig manure-derived sulfadiazine (SDZ) on the species distribution and bioactivities of ammonia-oxidizing microorganisms (AOMs) in soil. The results showed that SDZ had a significant inhibitory effect on AOMs, with comammox being the predominant ammonia oxidizer. AOB was found to be least affected by SDZ compared to other AOMs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Fengyi Zhu, Xuefei Tan, Weixin Zhao, Likui Feng, Shufei He, Liangliang Wei, Lin Yang, Kun Wang, Qingliang Zhao
Summary: The study demonstrated that using zero valent iron-based composites as fillers for permeable reactive barriers can effectively remove metal ions such as Cu(II), Co(II), Cr(VI) and As(III), showing potential application value. The composites exhibited different selectivity values in different metal systems, and also showed dynamic removal improvement for multiple metals.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Guanshu Zhao, Jing Ding, Jiayi Ren, Qingliang Zhao, Qingwei Gao, Kun Wang, Liangliang Wei, Xueqi Chen, Fanyang Zhou, Dionysios D. Dionysiou
Summary: The synergistic effect of Fe, NVs, and g-C3N4 in the system promotes the generation of oxysulfur radicals, providing new insights into the mechanisms of sulfite activation for water treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Huimin Zhou, Junqiu Jiang, Qingliang Zhao, Lili Li, Kun Wang, Liangliang Wei
Summary: In this study, a horizontal flow reactor was used to treat food waste under mesophilic, semi-continuous conditions. The methane production, substrate transformation, and microbial community characteristics were evaluated. The results showed that methane production was influenced by the organic loading rate, and the reduction rate of volatile solids was high. Additionally, the concentrations of free ammonia-nitrogen and soluble COD fluctuated significantly. Microbial community analysis revealed changes in the methane metabolic pathway.
Article
Environmental Sciences
Shutian Wang, Qingliang Zhao, Junqiu Jiang, Kun Wang
Summary: In this study, a bioelectrochemical-assisted sludge treatment wetland (BE-STW) system was constructed to improve the degradation ability and efficiency of organic matter in sludge treatment wetlands. The results showed that bioelectrochemistry could further remove chemical oxygen demand, increase hydrolysis efficiency, and generate bioelectricity. This technology provides a new pathway to enhance the efficiency of traditional sludge treatment wetland systems.
Article
Environmental Sciences
Y. Wang, Q. Zhao, Z. Wei, J. Li, W. Ni, Z. Wu, W. Wu, T. Zhou, P. Christie
Summary: This study investigates the adsorption behavior of cadmium on different types of organic fertilizers and found that chemical adsorption is the predominant process. Tobacco waste compost has the highest cadmium adsorption capacity, and the aging process can increase the adsorption capacity of compost.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Hang Yu, Jianju Li, Jing Liu, Shufei He, Kena Qin, Xinhui Xia, Chonghua Xue, Qingliang Zhao, Liangliang Wei
Summary: This study simulated the effects of operational parameters on the removal performance of typical pollutants in recharged water samples during soil aquifer treatment (SAT) in the Zibo-Weifang funnel area of China. Optimal conditions were determined based on the simulations, and recommendations were made for nitrate concentration threshold and pretreatment measures.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Shutian Wang, Junqiu Jiang, Qingliang Zhao, Kun Wang
Summary: A study constructed four different bioelectrochemical assisted sludge treatment wetland (BE-STW) systems using different substrates to investigate their effects on organic compounds degradation, electricity production, and bacterial community. The results showed that the substrate materials significantly affected the output voltage, power density, and organic carbon removal rate of the systems. The degradation of aromatic compounds was mainly achieved by reducing the hydrophilic fraction and transphilic acid fraction. The substrates also influenced the removal of specific proteins and the fluorescent characteristics of humic acid-like substances. At the genus level, certain bacterial genera dominated the BE-STW systems, and different substrates introduced different bacterial genera.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Yunshu Zhang, Jing Ding, Qingwei Gao, Bo Jiang, Cong Li, Qingliang Zhao
Summary: This study aims to improve the removal efficiency of organics through the synthesis of a low-cost Ti4O7 membrane electrode and the development of a flow-through electrooxidation system. The membrane electrode has high crystallinity and high specific surface area, and the flow-through conditions enhance the liquid-mass transfer, resulting in high degradation efficiency and low energy consumption.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Review
Environmental Sciences
Miao Jiang, Kun Wang, Yipeng Wang, Qingliang Zhao, Weiye Wang
Summary: This paper summarizes the sources of cobalt increase in soil, including natural and anthropogenic sources, and reviews the cobalt species in soil and factors influencing cobalt migration. The status of remediation technologies, particularly phytoremediation and immobilization, is critically evaluated. The paper provides improvement suggestions and prospects for all techniques and serves as a guide for the remediation of cobalt-contaminated soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Biotechnology & Applied Microbiology
Lili Li, Kun Wang, Qingliang Zhao, Qingwei Gao, Huimin Zhou, Junqiu Jiang, Wangyang Mei
Summary: Biogas from anaerobic digestion is an important alternative to fossil fuels, contributing to energy recovery and environmental sustainability. Mixing plays a critical role in biogas production, with intermittent mixing preferred for maximum biogas production. Local experimental techniques are simple and cost-effective for arbitrarily sized digesters, while global experimental techniques relying on computer systems are gaining attention for their applications in anaerobic digestion flow fields. Further research is needed to develop new experimental techniques that overcome the limitations of digestate opacity and industrial reactor geometries, and compartmental models based on computational fluid dynamics show promise for greater implementation of CFD applications.
REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY
(2022)
Article
Engineering, Environmental
Weiye Wang, Kun Wang, Qingliang Zhao, Ye Liu
Summary: By using a microbial fuel cell powered electro-Fenton system with the co-addition of lysozyme and 2-bromoethane sulfonate, simultaneous treatment of excess sludge and refractory wastewater was achieved. The system showed high removal efficiency of chemical oxygen demand in sludge and degradation of the model refractory pollutant, as well as the generation of micro-electricity. It also influenced microbial communities and functional genes, leading to improved degradation efficiency of refractory pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)