Results 21 to 30 of about 167,574,678 (311)
Journal of Materials Research and Technology, 2021 High-temperature nickel-based alloy, which is a valuable crucial material for fabricating functional components, is commonly used to fabricate turbine blades. However, the concave surface of the turbine blade is much difficult to be polished.
Qi Shao +5 more
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The Consensus on Citizenship Education Purposes in Teacher Education [PDF]
Social Sciences, 2021 Although education for democratic citizenship has long been a powerful rationale for social studies education, researchers still report a significant gap between this purpose and what is really taught in classrooms. Explanations of this phenomenon vary, but literature on citizenship education (CE) research has largely interpreted this gap as a result ...
Estelles Frade, Marta +2 more
openaire +3 more sources
Micromachines, 2020 Radial ultrasonic rolling electrochemical micromachining (RUR-EMM) is a new method of electrochemical machining (ECM). By feeding small and rotating electrodes aided by ultrasonic rolling, an array of pits can be manufactured, which is called ...
Kailei He, Xia Chen, Minghuan Wang
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Journal of Materials Research and Technology, 2021 Tangential ultrasonic vibration and vertical ultrasonic vibration are applied in the surface burnishing process (SBP) to study the improvement mechanism of both on the machining performance.
Zhou Zhen-yu +5 more
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Optimization of Lapping and Polishing of Steel Samples for Nanoindentation Based on SVM-GA
Frontiers in Materials, 2022 The nanoindentation test is extensively used to obtain the mechanics performance of different kinds of materials. In this study, the general process in the lapping and polishing of Q235 steel samples for nanoindentation has been analyzed by considering ...
Zhichao Cheng +5 more
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Frontiers in Materials, 2022 In order to realize the uniform distribution in the abrasive flow polishing of the titanium alloy workpiece with curved surface, a novel method based on the liquid metal-abrasive flow machining technology is proposed in this study.
Li Zhang +11 more
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Matching Boundary Conditions for the Euler–Bernoulli Beam
Shock and Vibration, 2021 Artificial boundary conditions play a crucial role in the dynamic simulation of infinite Euler–Bernoulli beams. In this paper, a class of artificial boundary conditions, matching boundary conditions (MBCs), is presented to provide effective absorption of
Yaoqi Feng, Xianming Wang
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IEEE Access, 2020 A novel design of the setup for testing super high-pressure high-speed switch valves is proposed that provides more accurate dynamic characteristics and reduces the hardware and energy expenses.
Chuan Ding +4 more
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Frontiers in Materials, 2022 Currently, micro-abrasive water jet machining has the problem of insufficient processing capacity in the central area. To assist with improving the processing efficiency, ultrasonic vibration is introduced.
Zhichao Cheng +5 more
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Teacher perceptions of citizenship education in social studies 30-1 [PDF]
, 2020 The purpose of this research was to gain a better understanding of the perspectives on and the treatment and assessment of citizenship education by Social Studies 30-1 teachers.
University of Lethbirdge. Faculty of Education +1 more
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