Frontiers of Mechanical Engineering
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A brief review on key technologies in the battery management system of electric vehicles
Frontiers of Mechanical Engineering - Tập 14 - Trang 47-64 - 2018
Batteries have been widely applied in many high-power applications, such as electric vehicles (EVs) and hybrid electric vehicles, where a suitable battery management system (BMS) is vital in ensuring safe and reliable operation of batteries. This paper aims to give a brief review on several key technologies of BMS, including battery modelling, state estimation and battery charging. First, popular ......
Design and analysis of a class of redundant collaborative manipulators with 2D large rotational angles
Frontiers of Mechanical Engineering - Tập 15 - Trang 66-80 - 2019
The parallel spindle heads with high rotational capability are demanded in the area of multi-axis machine tools and 3D printers. This paper focuses on designing a class of 2R1T (R: Rotation; T: Translation) parallel spindle heads and the corresponding collaborative 5-axis manipulators with 2-dimension (2D) large rotational angles. In order to construct 2D rotational degrees of freedom (DOFs), a pl......
Analysis of dispatching rules in a stochastic dynamic job shop manufacturing system with sequence-dependent setup times
Frontiers of Mechanical Engineering - Tập 9 - Trang 380-389 - 2014
Stochastic dynamic job shop scheduling problem with consideration of sequence-dependent setup times are among the most difficult classes of scheduling problems. This paper assesses the performance of nine dispatching rules in such shop from makespan, mean flow time, maximum flow time, mean tardiness, maximum tardiness, number of tardy jobs, total setups and mean setup time performance measures vie......
Creating technical heritage object replicas in a virtual environment
Frontiers of Mechanical Engineering - Tập 11 - Trang 108-115 - 2016
The paper presents innovative informatics methods for creating virtual technical heritage replicas, which are of significant scientific and practical importance not only to researchers but to the public in general. By performing 3D modeling and animation of aircrafts, spaceships, architectural-engineering buildings, and other technical objects, the process of learning is achieved while promoting t......
Effects of taping on grinding quality of silicon wafers in backgrinding
Frontiers of Mechanical Engineering - Tập 16 - Trang 559-569 - 2021
Taping is often used to protect patterned wafers and reduce fragmentation during backgrinding of silicon wafers. Grinding experiments using coarse and fine resinbond diamond grinding wheels were performed on silicon wafers with tapes of different thicknesses to investigate the effects of taping on peak-to-valley (PV), surface roughness, and subsurface damage of silicon wafers after grinding. Resul......
Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber reinforced plastics
Frontiers of Mechanical Engineering - Tập 15 - Trang 538-546 - 2020
Carbon fiber reinforced plastic (CFRP) composites are extremely attractive in the manufacturing of structural and functional components in the aircraft manufacturing field due to their outstanding properties, such as good fatigue resistance, high specific stiffness/strength, and good shock absorption. However, because of their inherent anisotropy, low interlamination strength, and abrasive charact......
Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling and experiment
Frontiers of Mechanical Engineering - Tập 17 - Trang 1-16 - 2022
Small pipes exist in industrial and biomedical fields, and require microrobots with high operational precision and large load capacity to inspect or perform functional tasks. A piezoelectric inertial pipeline robot using a “stick-slip” mechanism was proposed to address this requirement. In this study, the driving principle of the proposed robot was analyzed, and the strategy of the design scheme w......
Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths and process conditions
Frontiers of Mechanical Engineering - Tập 15 - Trang 303-318 - 2019
This study explores the feasibility of different laser systems to sinter screen-printed lines from nonconductive copper nanoparticles (Cu NPs) on polyethylene terephthalate polymer film. These materials are commonly used in manufacturing functional printed electronics for large-area applications. Here, optical and thermal characterization of the materials is conducted to identify suitable laser so......
Development of a redundant anthropomorphic hydraulically actuated manipulator with a roll-pitch-yaw spherical wrist
Frontiers of Mechanical Engineering - Tập 16 - Trang 698-710 - 2021
The demand for redundant hydraulic manipulators that can implement complex heavy-duty tasks in unstructured areas is increasing; however, current manipulator layouts that remarkably differ from human arms make intuitive kinematic operation challenging to achieve. This study proposes a seven-degree-of-freedom (7-DOF) redundant anthropomorphic hydraulically actuated manipulator with a novel roll-pit......
Buckling optimization of curvilinear fiber-reinforced composite structures using a parametric level set method
Frontiers of Mechanical Engineering - - 2024
Owing to their excellent performance and large design space, curvilinear fiber-reinforced composite structures have gained considerable attention in engineering fields such as aerospace and automobile. In addition to the stiffness and strength of such structures, their stability also needs to be taken into account in the design. This study proposes a level-set-based optimization framework for maxi......
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