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| 1 | Tool Life and Surface Integrity in High-speed Milling of Titanium Alloy TA15 with PCD/PCBN Tools显示文摘Titanium alloys are widely used in aeronautics that demand a good combination of high strength, good corrosion resistance and low mass. The mechanical properties lead to challenges in machining operations such as high process temperature as well as rapidly increasing tool wear. The conventional tool materials are not able to maintain their hardness and other mechanical properties at higher cutting temperatures encountered in high speed machining. In this work, the new material tools, which are polycrystalline diamond (PCD) and polycrystalline cubic boron nitride (PCBN) tools, are used in high-speed milling of Ti-6.5Al-2Zr-1Mo-1V (TA15) alloy. The performance and wear mechanism of the tools are investigated. Compared to PCBN tool, PCD tool has a much longer tool life, especially at higher cutting speeds. Analyses based on the SEM and EDX suggest that attrition, adhesion and diffusion are the main wear mechanisms of PCD and PCBN tools in high-speed milling of TA15. Oxidation wear is also observed at PCBN tool/workpiece interface. Roughness, defects, micro-hardness and microstructure of the machined surface are investigated. The recorded surface roughness values with PCD/PCBN tools are bellow 0.3 μm at initial and steady cutting stage. Micro-hardness analysis shows that the machined surface hardening depth with PCD and PCBN tools is small. There is no evidence of sub-surface defects with PCD and PCBN tools. It is concluded that for TA15 alloy, high-speed milling can be carried out with PCD/PCBN tools. | SU Honghua LIU Peng FU Yucan XU Jiuhua | 2012 | Chinese Journal of Aeronautics2012，25，5： | 39 |
| 2 | Cold expansion technology of connection holes in aircraft structures:A review and prospect显示文摘As one kind of key anti-fatigue manufacture approaches with simplicity and effectiveness, the hole cold expansion technology satisfies the increasing needs for light weight and durability of aircraft structures.It can improve the fatigue life by several times at no additional weight conditions.The hole cold expansion technology has been widely used in manufacturing and repairing of both fighters and commercial aircraft, and has become a research hotspot in the strengthening technology.In recent years, hole cold expansion process methods, residual stress around expanded holes, the behavior of fatigue crack initiation and propagation, and fatigue lives after cold expansion are researched extensively through lots of experiments and finite element simulations.A review on the hole cold expansion technology research status in the last twenty years is presented in this paper.Via the analysis of the current characteristics and defects of the hole cold expansion technology, combined with the actual needs in design and manufacture of new-generation aircraft, development trends and novel research directions are presented for realizing precise and high-efficiency anti-fatigue manufacture. | Fu Yucan Ge Ende Su Honghua Xu Jiuhua Li Renzheng | 2015 | Chinese Journal of Aeronautics2015，28，4： | 31 |
| 3 | Review on monolayer CBN superabrasive wheels for grinding metallic materials显示文摘A state-of-the-art review on monolayer electroplated and brazed cubic boron nitride(CBN) superabrasive wheels for grinding metallic materials has been provided in this article. The fabrication techniques and mechanisms of the monolayer CBN wheels are discussed. Grain distribution, wheel dressing, wear behavior, and wheel performance are analyzed in detail. Sample applications of monolayer CBN wheel for grinding steels, titanium alloys, and nickel-based superalloys are also provided. Finally, this article highlights opportunities for further investigation of monolayer CBN grinding wheels. | Ding Wenfeng Barbara Linke Zhu Yejun Li Zheng Fu Yucan Su Honghua Xu Jiuhua | 2017 | Chinese Journal of Aeronautics2017，30，1： | 24 |
| 4 | Chemotherapy-induced intestinal inflammatory responses are mediated by exosome secretion of double-strand DNA via AIM2 inflammasome activation显示文摘化疗经常被知道导致严重的胃肠的道毒性,但是内在的机制仍然保持不清楚。这研究作为一个代表性的代理人认为广泛地应用的细胞毒素的代理人是 irinotecan (CPT-11 ) 并且证明治疗从说明混合物的限制剂量的肠的毒性的肠导致双海滨 DNA 的巨大的版本。明确地,通过 exosome 分泌物释放的 self-DNA 进入天生的有免疫力的房间的 cytosol 并且激活 AIM2 (在黑瘤 2 不在) inflammasome。这导致成熟 IL-1 和 IL-18 分泌物并且导致肠的 mucositis 和迟了发作的腹泻。有趣地,在 AIM2 缺乏的老鼠或由象镇静药那样的一个药理学禁止者,没有影响 CPT-11 的 anticancer 功效, AIM2 发信号的废除显著地减少导致药的腹泻的发生。这些调查结果提供化疗怎么触发引起肠的毒性的天生的有免疫力的回答的机械学的卓见,并且揭示维持反瘤效果,但是围绕联系不利煽动性的反应的新化疗政体。 | Lian, Qiaoshi Xu, Jun Yan, Shanshan Huang, Min Ding, Honghua Sun, Xiaoyu Bi, Aiwei Ding, Jian Sun, Bing Geng, Meiyu | 2017 | Cell Research2017，27，6： | 18 |
| 5 | Single-phase-to-ground Fault Detection with Distributed Parameters Analysis in Non-direct Grounded Systems显示文摘The fast and accurate detection of the single-phaseto-ground fault is of great significance for the reliability and safety of the power supply.In this paper,novel algorithms for distribution network protection were proposed with distributed parameters analysis in non-direct grounded systems.At first,novel generating mechanisms of zero-sequence voltage and residual current were proposed.Then the compositions of residue parameters,including residual current and residual admittances,were decomposed in detail.After that,an improved algorithm for a fault resistance calculation of a single phase-to-earth fault was also proposed,and the algorithm is much more convenient as it only needs to measure the variation of the zero-sequence voltage and does not need the prerequisites of the faulty feeder selection.Furthermore,the fault feeder can also be selected by an improved calculation algorithm of zero-sequence admittance of the faulty feeder,which cannot be affected by the asymmetry of the network.Theoretical analysis and the MATALB/Simulink simulation results demonstrate the effectiveness of the proposed algorithms. | Baowen Liu Hongzhong Ma Honghua Xu Ping Ju | 2019 | CSEE Journal of Power and Energy Systems2019，5，1： | 16 |
| 6 | Robust current control design of a three phase voltage source converter显示文摘In this paper,a robust design method for current control is proposed to improve the performance of a three phase voltage source converter(VSC)with an inductorcapacitor-inductor(LCL)filter.The presence of the LCL filter complicates the dynamics of the control system and limits the achievable control bandwidth(and the overall performance),particularly when the uncertainty of the parameters is considered.To solve this problem,the advanced H?control theory is employed to design a robust current controller in stationary coordinates.Both control of the fundamental frequency current and suppression of the potential LC resonance are considered.The design procedure and the selection of the weight functions are presented in detail.A conventional proportional-resonant PR controller is also designed for comparison.Analysis showed that the proposed H∞ current controller achieved a good frequency response with explicit robustness.The conclusion was verified on a 5 kW VSC that had a LCL filter. | Wenming GONG Shuju HU Martin SHAN Honghua XU | 2014 | Journal of Modern Power Systems and Clean Energy2014，2，1： | 13 |
| 7 | Grinding behavior and surface appearance of(TiC_p+ TiB_w)/Ti-6Al-4V titanium matrix composites显示文摘(TiCp+ TiBw)/Ti-6Al-4V titanium matrix composites(PTMCs) have broad application prospects in the aviation and nuclear field. However, it is a typical difficult-to-cut material due to high hardness of the reinforcements, high strength and low thermal conductivity of Ti-6Al-4V alloy matrix. Grinding experiments with vitrified CBN wheels were conducted to analyze comparatively the grinding performance of PTMCs and Ti-6Al-4V alloy. Grinding force and force ratios, specific grinding energy, grinding temperature, surface roughness, ground surface appearance were discussed. The results show that the normal grinding force and the force ratios of PTMCs are much larger than that of Ti-6Al-4V alloy. Low depth of cut and high workpiece speed are generally beneficial to achieve the precision ground surface for PTMCs. The hard reinforcements of PTMCs are mainly removed in the ductile mode during grinding. However, the removal phenomenon of the reinforcements due to brittle fracture still exists, which contributes to the lower specific grinding energy and grinding temperature of PTMCs than Ti-6Al-4V alloy. | Ding Wenfeng Zhao Biao Xu Jiuhua Yang Changyong Fu Yucan Su Honghua | 2014 | Chinese Journal of Aeronautics2014，27，5： | 8 |
| 8 | 中国东部沿海杨树人工林养分重吸收和化学计量对氮添加的响应显示文摘叶片养分重吸收对土壤养分的变化很敏感。然而,我们尚不清楚氮沉降如何影响植物大量元素重吸收率。杨树(Populus deltoids)是世界上栽培最广泛的阔叶树种之一。本文研究了在氮添加条件下,杨树重吸收率及其化学计量比的规律和主要驱动因素。通过一个4年的氮添加实验,我们探究中国东部沿海两个林分(8和12年)杨树人工林重吸收率及其化学计量比对氮添加的响应。我们测定了在一系列氮添加浓度水平(0、50、100、150、300 kg N ha^(−1) yr^(−1))下,土壤和叶片(包括绿叶和落叶)中氮、磷、钾、钙、镁的浓度。研究结果表明,除钙元素重吸收率和钙、镁元素重吸收率化学计量比外,氮添加对两个林分大量元素重吸收率及其化学计量比都没有显著影响。氮、磷重吸收率尺度斜率在不同氮添加水平下均小于1,表明氮添加条件下,氮、磷元素重吸收率解耦。养分重吸收率与绿叶中养分含量显著正相关,表明重吸收主要受到绿叶养分调控。我们的研究结果为中国东部沿海地区12年生杨树人工林的生长受氮限制提供了直接证据。 | Dalong Jiang Qian Li Qinghong Geng Menghua Zhang Chonghua Xu Guoqing Hu Caiqin Shen Honghua Ruan Xia Xu | 2021 | Journal of Plant Ecology2021，14，4： | 5 |
| 9 | Inverse identification of constitutive parameters of Ti_2AlNb intermetallic alloys based on cooperative particle swarm optimization显示文摘Ti_2AlNb intermetallic alloy is a relatively newly developed high-temperature-resistant structural material, which is expected to replace nickel-based super alloys for thermally and mechanically stressed components in aeronautic and automotive engines due to its excellent mechanical properties and high strength retention at elevated temperature. The aim of this work is to present a fast and reliable methodology of inverse identification of constitutive model parameters directly from cutting experiments. FE-machining simulations implemented with a modified Johnson-Cook(TANH) constitutive model are performed to establish the robust link between observables and constitutive parameters. A series of orthogonal cutting experiments with varied cutting parameters is carried out to allow an exact comparison to the 2 D FE-simulations. A cooperative particle swarm optimization algorithm is developed and implemented into the Matlab programs to identify the enormous constitutive parameters. Results show that the simulation observables(i.e., cutting forces, chip morphologies, cutting temperature) implemented with the identified optimal material constants have high consistency with those obtained from experiments,which illustrates that the FE-machining models using the identified parameters obtained from the proposed methodology could be predicted in a close agreement to the experiments. Considering the wide range of the applied unknown parameters number, the proposed inverse methodology of identifying constitutive equations shows excellent prospect, and it can be used for other newly developed metal materials. | Linjiang HE Honghua SU Jiuhua XU Liang ZHANG | 2018 | Chinese Journal of Aeronautics2018，31，8： | 4 |
| 10 | Experiment on Machinability of Ti2AlNb Intermetallic Alloy显示文摘Ti2AlNb intermetallic alloy is a newly developed high-temperature resistant structural material due to its excellent material and mechanical properties,which also make it to be one of the most difficult-to-cut materials.In order to study the machinability of Ti2AlNb alloy,a series of turning experiments of Ti2AlNb alloy with varying cutting speed and feed rate using coated carbide tools are carried out.The results associated with cutting forces,cutting temperature and tool wear are presented and discussed.Moreover,the cutting performance of Ti2AlNb alloy is evaluated in comparison with that of most commonly used Ti6Al4 Vand Inconel 718 alloys in terms of the cutting forces and cutting temperature.The comparison results show that there is a correlation between the machinability and the mechanical properties of work material properties.Additionally,considering material removal rate and tool life,the optimized machining parameters for cutting Ti2AlNb alloys using coated carbide tools are recommended. | He Linjiang Su Honghua Xu Jiuhua Zhang Liang Bai Bing | 2017 | Transactions of Nanjing University of Aeronautics and Astronautics2017，34，5： | 3 |
| 11 | Structural basis of pre-mRNA recognition by the human cleavage factor Im complex显示文摘劈开因素我 m ( CF 我 m ),由 25 kDa 子单元组成( CF 我 m 25)并且三个更大的子单元之一( CF 我 m 59, CF 我 m 68, CF 我 m 72),并且一为 pre-mRNA 的必要蛋白质建筑群 3 ′ ;结束劈开和 polyadenylation 。它认出在上游的顺序 poly 以一种顺序依赖者方式的(A) 地点。这里,我们报导人的 CF 的水晶结构我 m , 包括 CF 我 m 25 和 CF 的 RNA 识别主题领域我 m 68 (CF 我 m 68RRM), 和 CF 的水晶结构我 m -RNA 建筑群。这些结构显示出那二 CF 我 m 68RRM 分子绑在 CF 我 经由形成 heterotetramer 的一个新奇 RRM 蛋白质相互作用模式更暗淡的 m 25。与反平行的取向,二 UGUAA RNA 定序的 RNA 固定的结构表演绑在一 CF 我 m 25-CF 我 m 68RRM heterotetramer,为由 CF 的机制提供结构的基础我 m 同时在 pre-mRNA 的一个分子以内绑二个 UGUAA 元素。点变化和运动分析表明那 CF 我 m 68RRM 能绑立即在上游的 flanking UGUAA 元素的区域,和 CF 我 m 68RRM 绑定显著地增加建筑群的RNA有约束力的亲密关系,建议那 CF 我 m 68 做必要贡献到 pre-mRNA 有约束力。 | Heng Li | 2011 | Cell Research2011，21，7： | 3 |
| 12 | Research and practice of designing hydro/ photovoltaic hybrid power system in microgrid显示文摘Small-hydro power station is often used in remote areas beside a river,but it doesn't match electricity demand so well,especially in dry seasons. A photovoltaic (PV) system with battery is a suitable option to complement the electricity gap. In this paper,a new structure of megawatt-class PV system integrating battery at DC-bus (DC: direct current) is proposed to be used in hydro/PV hybrid power system,and 4 main designing considerations and several key equipments are discussed. In 2011,a 2 MWp PV station with the proposed structure was built up in Yushu,China. From stability analysis,the station shows a strong stability under load cut-in/off and solar irradiance's fluctuation. | Wang Yibo Xu Honghua | 2013 | Engineering Sciences2013，11，3： | 2 |
| 13 | Style-content separation by anisotropic part scales 显示文摘 | Xu Kai Li Honghua Zhang Hao | 2010 | ACM Trans Graphics2010，29，6： | 1 |
| 14 | Analysis on Low Voltage Ride Through of Double Fed Induction Generator System显示文摘 | Jianlin LI Honghua XU | 2009 | IEEE Trans- actions on Electric Utility Deregulation and Restruc turing and Power Technologies2009，18，3： | 1 |
| 15 | Technology of modified orange peel adsorption treatment in wastewater containing zinc 显示文摘 | Xu Qunjie Ju Yanzhong Ge Honghua | 2013 | Advanced Materials Research2013，6106，： | 1 |
| 16 | Analysis on Low Voltage Ride Through of Double Fed Induction Generator System显示文摘 | Li Jianlin Xu Honghua | 2009 | IEEE Trans-actions on Electric Utility Deregulation and Restructuring and Power Technologies2009，18，3： | 1 |
| 17 | Training system design for middle-level manager in coal enterprises based on post competency model 显示文摘 | Honghua Xu Yanhua Wang | 2009 | Proce- dia Earth and Planetary Science2009，1，1： | 1 |
| 18 | 显示文摘 | Lai Chunyan Xu Qunjie Ge Honghua | 2008 | Solid State Ionies2008，，： | 1 |
| 19 | Dressing of monolayer brazed diamond wheel for grinding LiTi ferrite显示文摘 | Su Honghua Fu Yucan Xu Jiuhua | 2010 | Advanced Materials Research2010，1，： | 1 |
| 20 | Study on adsorption property of collagen fiber loaded hyperbranched polyamideamine toward Cr(Ⅵ)显示文摘 | Xu Qunjie Ju Yanzhong Ge Honghua | 2012 | Advanced Materials Research2012，，610611612613： | 1 |
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