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Jie Sun

Bio: Jie Sun is an academic researcher from Shandong University. The author has contributed to research in topics: Machining & Tool wear. The author has an hindex of 26, co-authored 150 publications receiving 1941 citations. Previous affiliations of Jie Sun include Donghua University & Chinese Ministry of Education.


Papers
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Journal ArticleDOI
TL;DR: A detailed literature review on the current research of incremental sheet forming relating to deformation mechanism, modelling techniques, forming force prediction and process investigations is presented in this paper, where several potential hybrid incremental sheet-forming strategies are discussed.
Abstract: This paper presents a detailed literature review on the current research of incremental sheet forming relating to deformation mechanism, modelling techniques, forming force prediction and process investigations. First, a review of the fundamental deformation mechanism and formability in incremental sheet forming (ISF) is provided. Subsequently, the modelling techniques for ISF are reviewed and categorised into two approaches: analytical modelling and finite element modelling. Special interest is given to a critical review regarding the forming forces analysis and prediction during the process. Then, previous publications related to geometric accuracy, surface finish and forming efficiency in ISF are reviewed. Finally, several potential hybrid incremental sheet-forming strategies are discussed. This leads to a statement of conclusion which may act as an inspiration and reference for the researcher.

100 citations

Journal ArticleDOI
Haijin Wang1, Jie Sun1, Jianfeng Li1, Laixiao Lu1, Nan Li1 
TL;DR: In this paper, the relationship between cutting parameters and cutting temperature, cutting force were developed by response surface methodology (RSM), and experiments were designed using the tool-workpiece thermocouple technique.
Abstract: The cutting temperature and cutting force are some of the main factors that influence the surface quality of carbon fiber-reinforced polymer (CFRP). However, few investigations have been done on cutting temperature because it is difficult to capture the dynamic response of the temperature measurement system. Degradation of resin will occur within the machined surface or surface layer as the temperature exceeds the glass-transition temperature of the resin matrix. In this research, the relationship between cutting parameters and cutting temperature, cutting force were developed by response surface methodology (RSM). The experiments were designed using the tool-workpiece thermocouple technique. Taking into consideration the effect of the glass-transition temperature, the influence of cutting force and cutting temperature on surface quality of CFRP was analyzed. Analysis results showed that Spindle speed is the key parameter which influenced the cutting temperature while feed rate is the key parameter which influenced the cutting force in milling of CFRP. When the cutting temperature exceeds the glass-transition temperature (T g), the matrix cannot provide enough support to the fibers, and the machining quality of composite material is poor.

96 citations

Journal ArticleDOI
TL;DR: In this article, the effects of high strain rate and elevated temperature on the deformation behaviors of FeCr alloy specimen, obtained by laser additive manufacturing (LAM), were investigated by Split Hopkinson Pressure Bar tests with the strain rates of 1000 −8000 s −1 and temperature range of 20 −800 ˚C.

91 citations

Journal ArticleDOI
TL;DR: In this article, the authors show that selective laser melting (SLM) can also act as a metallurgical method to modify the Ni/Ti ratio of NiTi shape memory alloys.
Abstract: In this work, we show that selective laser melting (SLM), apart from producing complex structures, can also act as a metallurgical method to modify the Ni/Ti ratio of NiTi shape memory alloys, and thus providing a feasible approach to tailor the transformation temperatures and to modify the mechanical performance of NiTi alloys. NiTi samples were fabricated by SLM with a large variation of process parameters, e.g. scanning speed (v) from 400 to 1200 mm s−1, hatch spacing (h) from 40 to 110 μm, and laser power (P) from 60 to 200 W. It is found that the martensite transformation temperature changes monotonously with the respective change of v, h or P. The composition analysis suggests that the different amount of Ni-loss under various SLM process conditions is the main reason for the evolution of transformation temperatures. Most importantly, good mechanical (total elongation >10 %) and functional properties under tensile mode have been obtained despite of the large variation of SLM process parameters and the presence of extensive defects. The good tensile properties and tailorable phase transformation temperatures will provide great potential to make novel NiTi smart structures.

90 citations

Journal ArticleDOI
TL;DR: In this article, the effect of blank initial residual stress on component deformation was investigated by finite element simulation and experiment, and it was shown that the initial residual stresses in the blank was the main factor of deformation for three-frame monolithic beam, and the coupling action of the residual stress and machining-induced residual stresses aggravated the deformation.
Abstract: The principal influence factors on the monolithic component deformation were investigated by finite element simulation simulation and experiment. Initial residual stress of the blank, machining-induced residual stress, and coupling action of these two effect factors were considered. To study the effect of blank initial residual stress on component deformation, chemical milling was used to remove the machining-induced residual stress on the machined surface of the components. The research results show that the initial residual stress in the blank was the main factor of deformation for three-frame monolithic beam, and the coupling action of the initial residual stress and machining-induced residual stresses aggravated the deformation. The deformation caused by machining residual stress accounted for about 10 % of the total deformation of the component, and the deformation caused by the blank initial residual stress accounted for 90 % of the total deformation of the component. The finite element simulation results were compared with experimental results and found to be in good agreement.

89 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, a review of green machining including the cutting fluid type as well as the methods to apply the cutting fluids in machining process is made regarding an attempt was made regarding of green manufacturing including cutting fluid types and its machining conditions are critically important in order to maximize the efficiency of cutting fluids.

555 citations

Journal ArticleDOI
TL;DR: An overview of the general characteristics of atmospheric pressure plasmas and a brief summary of their biomedical applications, and a wide range of these sources developed for biomedical applications are reviewed in this paper.
Abstract: Atmospheric-pressure plasmas (APPs) have attracted great interest and have been widely applied in biomedical applications, as due to their non-thermal and reactive properties, they interact with living tissues, cells and bacteria. Various types of plasma sources generated at atmospheric pressure have been developed to achieve better performance in specific applications. This article presents an overview of the general characteristics of APPs and a brief summary of their biomedical applications, and reviews a wide range of these sources developed for biomedical applications. The plasma sources are classified according to their power sources and cover a wide frequency spectrum from dc to microwaves. The configurations and characteristics of plasma sources are outlined and their biomedical applications are presented.

419 citations

Journal Article
TL;DR: In this paper, a generalization of the Local Density Approximation (LDA) method for the systems with strong Coulomb correlations is presented which gives a correct description of the Mott insulators.
Abstract: The generalization of the Local Density Approximation (LDA) method for the systems with strong Coulomb correlations is presented which gives a correct description of the Mott insulators. The LDA+U method is based on the model hamiltonian approach and allows to take into account the non-sphericity of the Coulomb and exchange interactions. parameters. Orbital-dependent LDA+U potential gives correct orbital polarization and corresponding Jahn-Teller distortion. To calculate the spectra of the strongly correlated systems the impurity Anderson model should be solved with a many-electron trial wave function. All parameters of the many-electron hamiltonian are taken from LDA+U calculations. The method was applied to NiO and has shown good agreement with experimental photoemission spectra and with the oxygen Kα X-ray emission spectrum.

376 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of building direction on the microstructure, mechanical properties and machinability of stainless steel was investigated, and it was found that the micro-structure was homogeneous, at the building direction of 0°, while a number of larger dendritic grains were present in the microstructures, and the tensile properties and hardness values were higher than those at 90°.

301 citations

Journal ArticleDOI
TL;DR: In this article, an attempt has been made to consolidate some of the aspects of mechanical and wear behavior of Al-MMCs and the prediction of the Mechanical and Tribological properties of Aluminum MMCs.
Abstract: Aluminum Metal Matrix Composites (MMCs) sought over other conventional materials in the field of aerospace, automotive and marine applications owing to their excellent improved properties. These materials are of much interest to the researchers from few decades. These composites initially replaced Cast Iron and Bronze alloys but owing to their poor wear and seizure resistance, they were subjected to many experiments and the wear behavior of these composites were explored to a maximum extent and were reported by number of research scholars for the past 25 years. In this paper an attempt has been made to consolidate some of the aspects of mechanical and wear behavior of Al-MMCs and the prediction of the Mechanical and Tribological properties of Aluminum MMCs.

264 citations