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| 1 | Modelling of the In uence of Tool Runout on Surface Generation in Micro Milling显示文摘Micro milling is a flexible and economical method to fabricate micro components with three-dimensional geometry features over a wide range of engineering materials. But the surface roughness and micro topography always limit the performance of the machined micro components. This paper presents a surface generation simulation in micro end milling considering both axial and radial tool runout. Firstly, a surface generation model is established based on the geometry of micro milling cutter. Secondly, the influence of the runout in axial and radial directions on the surface generation are investigated and the surface roughness prediction is realized. It is found that the axial runout has a significant influence on the surface topography generation. Furthermore, the influence of axial runout on the surface micro topography was studied quantitatively, and a critical axial runout is given for variable feed per tooth to generate specific surface topography. Finally, the proposed model is validated by means of experiments and a good correlation is obtained. The proposed surface generation model o ers a basis for designing and optimizing surface parameters of functional machined surfaces. | Wanqun Chen Yazhou Sun Dehong Huo Xiangyu Teng | 2019 | Chinese Journal of Mechanical Engineering2019，32，1： | 3 |
| 2 | Integrated Simulation Method for Interaction between Manufacturing Process and Machine Tool显示文摘The interaction between the machining process and the machine tool(IMPMT) plays an important role on high precision components manufacturing. However, most researches are focused on the machining process or the machine tool separately, and the interaction between them has been always overlooked. In this paper, a novel simplified method is proposed to realize the simulation of IMPMT by combining use the finite element method and state space method. In this method, the transfer function of the machine tool is built as a small state space. The small state space is obtained from the complicated finite element model of the whole machine tool.Furthermore, the control system of the machine tool is integrated with the transfer function of the machine tool to generate the cutting trajectory. Then, the tool tip response under the cutting force is used to predict the machined surface. Finally, a case study is carried out for a fly-cutting machining process, the dynamic response analysis of an ultra-precision fly-cutting machine tool and the machined surface verifies the effectiveness of this method. This research proposes a simplified method to study the IMPMT, the relationships between the machining process and the machine tool are established and the surface generation is obtained. | CHEN Wanqun HUO Dehong XIE Wenkun TENG Xiangyu ZHANG Jiayi | 2016 | Chinese Journal of Mechanical Engineering2016，29，6： | 2 |
| 3 | Combined use of fasting plasma glucose and glycated hemoglobin A1c in the screening of diabetes and impaired glucose tolerance显示文摘 | Yaomin Hu Wei Liu Yawen Chen Ming Zhang Lihua Wang Huan Zhou Peihong Wu Xiangyu Teng Ying Dong Jia wen Zhou Hua Xu Jun Zheng Shengxian Li Tao Tao Yumei Hu Yun Jia | 2010 | Acta Diabetologica2010，，3： | 1 |
| 4 | Combined use of fasting plasma glucose and glycated hemoglobin A1c in the screening of diabetes and impaired glucose tolerance显示文摘 | Yaomin Hu Wei Liu Yawen Chen Ming Zhang Lihua Wang Huan Zhou Peihong Wu Xiangyu Teng Ying Dong Jia wen Zhou Hua Xu Jun Zheng Shengxian Li Tao Tao Yumei Hu Yun Jia | 2010 | Acta Diabetologica2010，，3： | 1 |
| 5 | Synthesis and properties of binaphthyl chiral thermally activated delayed fluorescence molecules using thioxanthone as acceptor显示文摘The currently reported axial chiral molecules based on the 3,3'-substitution of the binaphthyl skeleton are limited by intrinsic fluorescence properties,resulting in generally low device efficiencies(EQE<5%)of related organic light emitting diodes(OLEDs).Herein,we designed and synthesized four pair of chiral binaphthyl enantiomers(R/S-1-R/S-4)adopting acceptor-donor-donor-acceptor(ADDA)structure by introducing different thioxanthone modification groups on the 3,3'-position of 2,2'-dimethoxy-1,1'-binaphthalene.Among them,emitter R/S-2 and R/S-4 obtained by enhancing intramolecular charge transfer exhibited TADF characteristics due to relatively small Est of 0.12eV and 0.17eV,and relatively moderate SOC matrix elements of 0.28 cm^(-1)and 0.10 cm^(-1)between the 1CT and 3LE states.The CD spectra of these enantiomers in diluted solutions showed perfect mirror images and reasonable gabs for small organic molecules(10^(-4)-10^(-3)).And the external quantum eficiencies(EQE)of 10.9%and 8.32%for device A and B based on emitter S-2 and S-4 were highest compared with currently reported axial chiral molecules based on the 3,3'-position substitution of binaphthyl skeleton,providing simple molecular design strategies to construct efficient CP-OLED device. | Xiangyu Dong Shaogang Shen Yuanyuan Qin Xiaoxiao Hu Honglei Gao Guanhao Liu Teng Ga Zhi Pang Pengfei Wang Ying Wang | 2023 | Chinese Chemical Letters2023，34，12： | 0 |
| 6 | Nearly 100% exciton utilization in highly efficient red OLEDs based on dibenzothioxanthone acceptor显示文摘Improving the utilization of excitons has always been an important topic for the development of electroluminescence devices.In this work,we designed and synthesized three red TADF emitters TPA-DBT12,TPA-DBT3 and DTPA-DBT by employing dibenzothioxanthone(DBT)acceptor framework to stabilize the locally excited triplet state to participate in the reverse intersystem crossing(RISC)process.The fast RISC process and singlet radiation decay process gave rise to evidently enhanced exciton utilization.All of the red OLEDs based on these materials showed maximum EQE over 11% and high exciton utilization close to 100%.This work not only extend the acceptor framework for red materials but also provide a new perspective for the design of highly efficient red TADF materials with 100% exciton utilization by managing locally excited triplet state. | Xiaoxiao Hu Yuanyuan Qin Zhiyi Li Honglei Gao Teng Gao Guanhao Liu Xiangyu Dong Naxi Tian Xiuxian Gu Chun-Sing Lee Pengfei Wang Ying Wang | 2022 | Chinese Chemical Letters2022，33，10： | 0 |
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