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| 1 | Passive-source ocean bottom seismograph(OBS) array experiment in South China Sea and data quality analyses显示文摘Long-term passive source ocean bottom seismograph(OBS) observatory is challenging due to various technical difficulties. In order to gain experience in this field, and to reveal the lithospheric structure beneath the extinct ridge in the central South China Sea(SCS), we carried out a passive source OBS array experiment, which includes 18 OBSs, in the deep portion of SCS. Here we present the instrumentation, the OBS deployment and recovery of this experiment, and more importantly, the data quality evaluated by a number of approaches. Through processing and inspecting waveforms from global, regional and local earthquakes, we find that most of recovered OBSs have good data quality with discernible main phases. The ambient noise analyses of OBS recordings show that their noise is higher than the global average, and the horizontal component is noisier than the vertical, indicating current impacts on horizontal components are more severe. In the period range of 5–10 s, there is a noise notch for the SCS OBSs, and noise levels of horizontal components are comparable to the vertical. This feature, which is not seen at OBS stations in open ocean, suggests the distant sources for double frequency microseism in this marginal sea are not significant. In addition, we successfully determined the orientations for 7 OBSs by investigating their Rayleigh wave polarizations; and we demonstrated the dispersion feature of Rayleigh waves through the frequency-time analysis. Finally, we summarized lessons learned from this experiment regarding the passive source OBS investigations in SCS. | Chenguang Liu Qingfeng Hua Yanliang Pei Ting Yang Shaohong Xia Mei Xue Ba Manh Le Da Huo Fang Liu Haibo Huang | 2014 | Chinese Science Bulletin2014，59，33： | 11 |
| 2 | Deformation behavior of non-rigid airships in wind tunnel tests显示文摘Deformation behavior of non-rigid airships in wind tunnel tests is studied by considering three factors, including internal pressure, flow velocity and angle of attack. Fiber Bragg grating strain sensors are used to measure the deformation of non-rigid airships. Wind tunnel tests in the case of different flow velocities and angles of attack are conducted. The measurement results reveal that the airship deformation is in proportion to internal pressure. For the tensile region,the airship deformation is in proportion to flow velocity. Effects of angle of attack on structural deformation are more complicated and there is no clear relationship existing between airship deformation and angle of attack. | Lingling LU Hongwei SONG Yiwei WANG Chenguang HUANG | 2019 | Chinese Journal of Aeronautics2019，32，3： | 9 |
| 3 | Interface delamination of the thermal barrier coating subjected to local heating显示文摘To investigate the possible failure modes of the thermal barrier coating (TBC) used to protect the scramjet combustion chamber, the local heating via laser beam irradiation was utilized to simulate the service condition of high thermal flux and high temperature gradient. Firstly, the experimental method and process were described and the typical fracture morphology of the TBC under test were provided. Then, the theoretical and finite element modeling were carried out to study the temperature, deformation and stresses of the specimen when the top ceramic coat was subjected to local heating, and to demonstrate the mechanism on the failure of the TBC. It is revealed that the interface delamination shall appear and ultimately lead to the failure of the TBC under such thermal loading of local quick heating. According to the outcome of this study, the driving force of the interface delamination is influenced greatly by the key structural parameters and performance matching. Moreover, by utilizing the rules of the effects of these parameters on the fracture driving force, there is some possibility for the designer to optimize the performances of the TBC. | WU ChenWu, HUANG ChenGuang & CHEN GuangNan Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China | 2010 | Science China(Technological Sciences)2010，53，12： | 7 |
| 4 | Elevated plasma levels of selective cytokines in COVID-19 patients reflect viral load and lung injury显示文摘A recent outbreak of pneumonia in Wuhan,China was found to be caused by a 2019 novel coronavirus(2019-nCoV or SARS-CoV-2 or HCoV-19).We previously reported the clinical features of 12 patients with2019-n Co V infections in Shenzhen,China.To further understand the pathogenesis of COVID-19 and find better ways to monitor and treat the disease caused by 2019-n Co V,we measured the levels of 48 cytokines in the blood plasma of those 12 COVID-19 patients.Thirty-eight out of the 48 measured cytokines in the plasma of 2019-n Co V-infected patients were significantly elevated compared to healthy individuals.Seventeen cytokines were linked to 2019-nCoV loads.Fifteen cytokines,namely M-CSF,IL-10,IFN-α2,IL-17,IL-4,IP-10,IL-7,IL-1 ra,G-CSF,IL-12,IFN-γ,IL-1α,IL-2,HGF and PDGF-BB,were strongly associated with the lung-injury Murray score and could be used to predict the disease severity of2019-n Co V infections by calculating the area under the curve of the receiver-operating characteristics.Our results suggest that 2019-nCoV infections trigger extensive changes in a wide array of cytokines,some of which could be potential biomarkers of disease severity of 2019-n Co V infections.These findings will likely improve our understanding of the immunopathologic mechanisms of this emerging disease.Our results also suggest that modulators of cytokine responses may play a therapeutic role in combating the disease once the functions of these elevated cytokines have been characterized. | Yingxia Liu Cong Zhang Fengming Huang Yang Yang Fuxiang Wang Jing Yuan Zheng Zhang Yuhao Qin Xiaoyun Li Dandan Zhao Shunwang Li Shuguang Tan Zhaoqin Wang Jinxiu Li Chenguang Shen Jianming Li Ling Peng Weibo Wu Mengli Cao Li Xing Zhixiang Xu Li Chen Congzhao Zhou William J Liu Lei Liu Chengyu Jiang | 2020 | National Science Review2020，7，6： | 6 |
| 5 | Passive control of cavitating flow around an axisymmetric projectile by using a trip bar显示文摘Quasi-periodical evolutions such as shedding and collapsing of unsteady cloud cavitating flow, induce strong pressure fluctuations, what may deteriorate maneuvering stability and corrode surfaces of underwater vehicles. This paper analyzed effects on cavitation stability of a trip bar arranged on high-speed underwater projectile. Small scale water tank experiment and large eddy simulation using the open source software Open FOAM were used, and the results agree well with each other. Results also indicate that trip bar can obstruct downstream re-entrant jet and pressure wave propagation caused by collapse, resulting in a relatively stable sheet cavity between trip bar and shoulder of projectiles. | Jian Huang Chao Yu Yiwei Wang Chang Xu Chenguang Huang | 2017 | Theoretical & Applied Mechanics Letters2017，7，4： | 4 |
| 6 | Effects of imperfect experimental conditions on stress waves in SHPB experiments显示文摘Experimental and numerical simulations were undertaken to estimate the effects of imperfect conditions on stress waves in split Hopkinson pressure bar(SHPB)experiments. The photonic Doppler velocimetry(PDV) measurement results show that the rise and fall times of an incident wave increases with an increasing inclination angle;also, the fluctuations of the incident wave disappear gradually with the increase of inclination angle. The following characteristics for various defects in the SHPB were obtained by numerical simulation:(1) the influence of a curved bar was negligible;(2) misalignment modestly affects the fluctuation characteristics, and bending waves were generated at this condition;(3) inclination and indentation of the impact endsurface had a great impact on the incident waves, and both of them increase the rise time of the incident wave by increasing the degree of defects. In view of the results, misalignment,inclination, and indentation in SHPB experiments should be minimized. | Xianqian Wu Qiuyun Yin Yanpeng Wei Chenguang Huang | 2015 | Acta Mechanica Sinica2015，31，6： | 4 |
| 7 | Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS_(2)mixed-dimensional phototransistors显示文摘Mix-dimensional van der Waals heterostructures(vdWHs)have inspired worldwide interests and efforts in the field of ad-vanced electronics and optoelectronics.The fundamental understanding of interfacial charge transfer is of vital import-ance for guiding the design of functional optoelectronic applications.In this work,type-Ⅱ0D-2D CdSe/ZnS quantum dots/MoS_(2)vdWHs are designed to study the light-triggered interfacial charge behaviors and enhanced optoelectronic performances.From spectral measurements in both steady and transient states,the phenomena of suppressed photolu-minescence(PL)emissions,shifted Raman signals and changed PL lifetimes provide strong evidences of efficient charge transfer at the 0D-2D interface.A series of spectral evolutions of heterostructures with various QDs overlapping concentrations at different laser powers are analyzed in details,which clarifies the dynamic competition between exciton and trion during an efficient doping of 3.9×10^(13)cm^(−2).The enhanced photoresponses(1.57×10^(4)A·W^(-1))and detectivities(2.86×10^(11)Jones)in 0D/2D phototransistors further demonstrate that the light-induced charge transfer is still a feasible way to optimize the performance of optoelectronic devices.These results are expected to inspire the basic understand-ing of interfacial physics at 0D/2D interfaces,and shed the light on promoting the development of mixed-dimensional op-toelectronic devices in the near future. | Ziwei Li Wen Yang Ming Huang Xin Yang Chenguang Zhu Chenglin He Lihui Li Yajuan Wang Yunfei Xie Zhuoran Luo Delang Liang Jianhua Huang Xiaoli Zhu Xiujuan Zhuang Dong Li Anlian Pan | 2021 | Opto-Electronic Advances2021，4，9： | 4 |
| 8 | Plasmonically engineered light-matter interactions in Aunanoparticle/MoS_(2) heterostructures for artificial optoelectronic synapse显示文摘Optoelectronic synaptic elements are emerging functional devices for the vigorous development of advanced neuromorphic computing technology in the post-Moore era.However,optoelectronic devices based on transition metal dichalcogenides(TMDs)are limited to their poor mobilities and weak light-matter interactions,which still hardly exhibit superior device performances in the application of artificial synapses.Here,we demonstrate the successful fabrication of Au nanoparticle-coupled MoS_(2)heterostructures via chemical vapor deposition(CVD),where the light absorption of MoS_(2)is greatly enhanced and engineered by plasmonic effects.Hot electrons are excited from Au nanoparticles,and then injected into MoS_(2)semiconductors under the light illumination.The plasmonically-engineered photo-gating effect at the metal-semiconductor junction is demonstrated to create optoelectronic devices with excellent synaptic behaviors,especially in ultra-sensitive excitatory postsynaptic current(EPSC,9.6×10^(-3)nA@3.4 nW·cm^(-2)),ultralow energy consumption(34.7 pJ),long-state retention time(>1,000 s),and tunable synaptic plasticity transitions.The material system of Au-nanoparticles coupled TMDs presents unique advantages for building artificial synapses,which may lead the future development of neuromorphic electronics in optical information sensing and learning. | Zhuoran Luo Yunfei Xie Ziwei Li Yajuan Wang Lihui Li Ziyu Luo Chenguang Zhu Xin Yang Ming Huang Jianhua Huang Delang Liang Xiaoli Zhu Dong Li Anlian Pan | 2022 | Nano Research2022，15，4： | 3 |
| 9 | Effect of Curing Regime on the Distribution of Al^(3+) Coordination in Hardened Cement Pastes显示文摘The effect of curing regime on the distribution of Al3+coordination in hardened cement pastes within 28 d were investigated by29Si and27Al magic angle spinning(MAS) nuclear magnetic resonance(NMR) with deconvolution technique.The results indicate that the tetrahedral coordination Al3+incorporated in C-S-H structure mainly originate from the Al3+incorporated in the alite and belite phases in the Portland cement.The curing regime of constant temperature of 20 ℃ is beneficial to the octahedral coordination Al3+ transforming to tetrahedral coordination Al3+incorporated in C-S-H structure.However,at curing regime of variable temperature,the temperature rising process is more advantageous to the transformation from ettringite to monosulphate,substitution of Al3+for Si4+in the C-S-H structure and the formation of the third aluminate hydrate(TAH) than that at constant temperature of 20 ℃.The high temperature of 60 ℃ in the holding temperature process promotes the decomposition of ettringite,and enhances the consumption of the Al3+ incorporated in C-S-H phases and the Al3+in TAH for the monosulphate forming.The temperature decreasing promotes the transformation from monosulphate to ettringite,and increases the consumption of the Al3+ incorporated in C-S-H phases,and then increases the quantity of the TAH. | 丁庆军 HU Chenguang FENG Xiaoxin HUANG Xiulin | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，5： | 3 |
| 10 | A phenomenological description of moisture capacity of iron ores显示文摘Moisture capacity of iron ore,defined as its ability to hold water,has been found to be affected by its particle size and chemical composition.To explain this phenomenon,mathematical model was developed on the basis of particle size,specific surface area,pore properties and contact angle between the iron ore and water.The specific surface area and the pore volume of iron ores were measured to validate the model,and parametric studies were carried out to investigate the effects of these factors,showing that particle size and surface area of the iron ore and thickness of the water film are the principal factors determining the moisture capacity.The model gave reasonable explanation of the phenomenon that moisture capacity increases with decreasing particle size.A correlation developed can well predict the moisture capacity of iron ores.Deviations between measurements and calculations were analyzed. | Xuewei Lv Qiugang Yuan Chenguang Bai Xiaobo Huang Lei Lei | 2012 | Particuology2012，10，6： | 3 |
| 11 | Dynamic rupture of metal sheet subjected to laser irradiation and tangential subsonic airflow显示文摘To reproduce the premature rupture process of metal sheet subjected to laser irradiation with subsonic airflow,which is an interesting phenomenon observed in the experiments given by Lawrence Livermore National Laboratory,a coupled numerical model considering the interaction and evolution of metal elastoplastic deformation and aerodynamic pressure profile is presented.With the thermal elastoplastic constitutive relationship and failure criterion,the simulated failure modes and dynamic rupture process are basically consistent with the experimental results,indicating plastic flow and multiple fracturing is the main failure mechanism.Compared with the case of non-airflow,subsonic airflow not only accelerates deformation,but also turns the bugle deformation,plastic strain and rupture mode into asymmetric. | Xiaodong Xing Te Ma Ruixing Wang Chenyu Cao Hongwei Song Chenguang Huang | 2018 | Theoretical & Applied Mechanics Letters2018，8，4： | 2 |
| 12 | Dynamic tensile and failure behavior of bi-directional reinforced GFRP materials显示文摘In this paper,a series of static/dynamic tensile tests are performed for glass fiber reinforced plastic(GFRP)composites.Using the combination of high-speed photography and digital image correlation(DIC)technology,true stress-strain curves in different directions and strain rates are obtained.We also obtained the dynamic failure strain of the material in different directions,which are used to accurately describe the dynamic tensile and failure behavior of the material.The experimental results show that there is a stiffness change point N in three directions under different strain rate(10-3 s-1,10 s-1,100 s-1)tensile conditions.The stiffness before and after N point is recorded as Einitial and Echanged respectively.The values of Echanged in weft direction and warp direction are about 30%to 50%of Einitial,while Echanged in tilt direction is only about 10%of Einitial.The fiber has the highest strength in the weft direction and the tilt direction has the lowest strength.With the combination of high-speed photography and DIC technology,the dynamic failure parameters of different directions under the strain rate of 100 s-1 are obtained.The dynamic failure strains in three directions are 0.245,0.373 and 0.341,respectively.The parameters are verified by impact three-point bending test.These works can more accurately describe the dynamic mechanical behavior of glass fiber reinforced plastic(GFRP)composites and provide reference for the design of GFRP structures. | Zishang Liu Zhe Yang Yuchao Chen Yangyang Yu Yanpeng Wei Maohui Li Chenguang Huang | 2020 | Acta Mechanica Sinica2020，36，2： | 2 |
| 13 | A MODIFIED METHOD IN FINITE ELEMENT ANALYSIS WITH APPLICATION TO SIMPLE SHEARING显示文摘A modified technique called compatible stress iterative procedure isproposed in finite element analysis,which has well improved the conventionalweighted-residual method and was successful in dealing with the formation andlocalization process of shear banding. | Song Suncheng (Inner Mongolia Research Institute of Metals,014030,China)Huang Chenguang Duan Zhuping (LNM,Institute of Mechanics,Chinese Academy of Sciences,100080,China) | 1994 | Acta Mechanica Solida Sinica1994，7，4： | 2 |
| 14 | Dynamic experimental studies of a6n01s-t5 aluminum alloy material and structure for high-speed train显示文摘In this study, we focus on the dynamic failure property of A6N01S-T5 aluminum alloyusing for high-speed train. The method of SHBT+3D DIC was put forward to figure out the dynamic mechanical properties and dynamic failure strain of A6N01S-T5 aluminum alloy,and on the basis of this, Johnson-Cook model constitutive parameters and dynamic failure strain parameters were obtained through a series of static and dynamic tests.An important character of this methodwas that the sandwich structure from the true high-speed train was used in penetration test,followed by the numerical calculation of the same working condition using LS-DYNA.Then we compare the experimental results with simulation results mentioned above in terms of failure morphology in structure and the bullet speed throughout the entire process to verifythe accuracyof the parameter. The experimental results provide a data basis for the crash simulation model of high-speed trains,in turn to optimize the structural design and whole efficiency. | Zishang Liu YangyangYu Zhe Yang Yanpeng Wei Junshuang Cai Maohui Li Chenguang Huang | 2019 | Acta Mechanica Sinica2019，35，4： | 2 |
| 15 | Experiment and numerical simulation on the characteristics of fluid–structure interactions of non-rigid airships显示文摘Fluid–structure interaction is an important issue for non-rigid airships with inflated envelopes. In this study, a wind tunnel test is conducted, and a loosely coupled procedure is correspondingly established for numerical simulation based on computational fluid dynamics and nonlinear finite element analysis methods. The typical results of the numerical simulation and wind tunnel experiment, including the overall lift and deformation, are in good agreement with each other. The results obtained indicate that the effect of fluid–structure interaction is noticeable and should be considered for non-rigid airships. Flowinduced deformation can further intensify the upward lift force and pitching moment, which can lead to a large deformation. Under a wind speed of 15 m/s, the lift force of the non-rigid model is increased to approximately 60% compared with that of the rigid model under a high angle of attack. | Xiaocui Wu Yiwei Wang Chenguang Huang Yubiao Liu Lingling Lu | 2015 | Theoretical & Applied Mechanics Letters2015，5，6： | 1 |
| 16 | Effect of Curing Regime on Polymerization of C-S-H in Hardened Cement Pastes显示文摘The effect of two different curing regimes on the polymerization degree of C-S-H in hardened cement pastes within 28 d were investigated by measuring the chemical environments of 29Si with magic angle spinning (MAS) nuclear magnetic resonance (NMR) and by analyzing the 29Si NMR spectra with deconvolution technique. The experimental results indicate that, at curing regime of constant temperature of 20 ℃, the polymerization of C-S-H increases and then decreases with curing age, and the Al/Si ratio increases gradually with curing age, furthermore, the two non-bridging oxygen bonds of bridging silicate tetrahedra in C-S-H structure mainly bond to H+. At curing regime of variable temperature, the polymerization of C-S-H firstly increases then changes slightly and subsequently decreases with the temperature from low to high and then to low, and the Al/Si ratio firstly increases then keeps invariant and subsequently slightly decreases. Moreover, the temperature decreasing is advantageous for the Ca2+ to be bonded to the bridging silicate tetrahedra and entering into the interlayer of C-S-H structure. The polymerization of C-S-H at curing regime of variable temperature is higher than that cured at constant temperature, but the curing regime of constant temperature is more beneficial to the substitution of Al3 for Si4+ than that of variable temperature. | 丁庆军 HU Chenguang FENG Xiaoxin HUANG Xiulin | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，4： | 1 |
| 17 | Impact toughness of a gradient hardened layer of Cr5Mo1V steel treated by laser shock peening显示文摘Laser shock peening(LSP) is a widely used surface treatment technique that can effectively improve the fatigue life and impact toughness of metal parts.Cr5Mo1 V steel exhibits a gradient hardened layer after a LSP process.A new method is proposed to estimate the impact toughness that considers the changing mechanical properties in the gradient hardened layer.Assuming a linearly gradient distribution of impact toughness,the parameters controlling the impact toughness of the gradient hardened layer were given.The influence of laser power densities and the number of laser shots on the impact toughness were investigated.The impact toughness of the laser peened layer improves compared with an untreated specimen,and the impact toughness increases with the laser power densities and decreases with the number of laser shots.Through the fracture morphology analysis by a scanning electron microscope,we established that the Cr5Mo1 V steel was fractured by the cleavage fracture mechanism combined with a few dimples.The increase in the impact toughness of the material after LSP is observed because of the decreased dimension and increased fraction of the cleavage fracture in the gradient hardened layer. | Weiguang Xia Lei Li Yanpeng Wei Aimin Zhao Yacong Guo Chenguang Huang Hongxiang Yin Lingchen Zhang | 2016 | Acta Mechanica Sinica2016，32，2： | 1 |
| 18 | A numerical model for cloud cavitation based on bubble cluster显示文摘The cavitation cloud of different internal structures results in different collapse pressures owing to the interaction among bubbles. The internal structure of cloud cavitation is required to accurately predict collapse pressure. A cavitation model was developed through dimensional analysis and direct numerical simulation of collapse of bubble cluster. Bubble number density was included in proposed model to characterize the internal structure of bubble cloud. Implemented on flows over a projectile, the proposed model predicts a higher collapse pressure compared with Singhal model. Results indicate that the collapse pressure of detached cavitation cloud is affected by bubble number density. | Tezhuan Du Yiwei Wang Chenguang Huang Lijuan Liao | 2017 | Theoretical & Applied Mechanics Letters2017，7，4： | 1 |
| 19 | Solid state and smelting reduction of Panzhihua ilmenite concentrate with coke显示文摘 | HUANG Run LU Xuewei BAI Chenguang | 2012 | Canadian Metallurgical Quarterly2012，5，： | 1 |
| 20 | Solid state and smelting reduction of Panzhihua ilmenite concentrate with coke 显示文摘 | Huang Run Lv Xuewei Bai Chenguang eta/ | 2012 | Canadian Metallurgical Quarterly2012，51，： | 1 |
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