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| 1 | RAPID AND NONDESTRUCTIVE MEASUREMENT SYSTEM FOR WELDING RESDlUAL STRESS BY ULTRASONIC METHOD显示文摘Traditional methods of residual stress measurement are generally destructive or semi-destructive,as well as expensive,time-consuming and complex to implement.With the new development of welded structure,traditional methods can not satisfy the need of full life task management.So the acoustical theory is introduced,since the ultrasonic technique provides a useful nondestructive tool in the evaluation of stresses.In this study an ultrasonic stress measurement experimental installation is established,which consists of a special transducer,a signal emission unit and a signal recipient processing unit.Longitudinal critically refracted wave is selected as the measurement wave mode.The supporting software is programmed by Labview software.The longitudinal residual stress and transverse residual stress of twin wire welded plate are measured by this installment,in which the measuring process is real-time,quick and nondestructive.The experiment results indicate that the system can satisfy the need of life evaluation for welded structure. The system is light and portable. | LU Hao LIU Xuesong ZHU Zheng ZHANG Shiping FANG Hongyuan | 2008 | Chinese Journal of Mechanical Engineering2008，21，6： | 8 |
| 2 | Fatigue Property of Basalt Fiber-Modified Asphalt Mixture under Complicated Environment显示文摘The fatigue property of asphalt mixtures under complicated environment(low-temperature bending performance, chloride penetration, freezing-thawing cycle and their coupling effect) and the improvement effect for relevant property of basalt fiber-reinforcing asphalt mixture under complicated environment are studied. Two grading types of asphalt mixtures, AC-16 I and AC-13 I, are chosen, whose optimum asphalt-aggregate ratio and optimum dosage of basalt fiber are determined by the Marshall test. The standard specimens are made firstly, and then the low temperature bending tests of asphalt mixture and basalt fiber-reinforced asphalt mixture under the coupling effect of the chloride erosion and freezing-thawing cycle have been carried out. Finally, the fatigue property tests of asphalt mixture and basalt fiber-reinforced asphalt mixture under complex environment are performed on MTS material testing system. The results indicate that the tensile strength, the maximum curving tensile stress, the curving stiffness modulus, and fatigue properties of asphalt mixture are infl uenced by the coupling effect of the chloride erosion and freezing-thawing cycle. The low-temperature bending performance and fatigue property of asphalt mixtures under complicated environment can be greatly improved by adding moderate basalt fiber. The dense gradation asphalt mixture possesses stronger ability to resist adverse environmental effects under the same condition. | 郑元勋 CAI Yingchun ZHANG Guanghai FANG Hongyuan | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，5： | 8 |
| 3 | Effect of Sheet Configuration on Microstructure and Mechanical Behaviors of Dissimilar Al–Mg–Si/Al–Zn–Mg Aluminum Alloys Friction Stir Welding Joints显示文摘Friction stir welding(FSW) was used to weld dissimilar Al–Mg–Si/Al–Zn–Mg aluminum alloys in this work.Influences of sheet configuration on microstructure and mechanical properties of the joints were mainly discussed.Results showed that rather different joint cross sections were obtained when using different sheet configurations.Coarser β' phases can be observed at the heat affected zone(HAZ) of the Al–Mg–Si alloy side,which was the main factor affecting the tensile properties and the fatigue properties.Tensile strengths of the dissimilar Al–Mg–Si/Al–Zn–Mg joints using both configurations were higher than that of the Al–Mg–Si FSW joint.When the Al–Zn–Mg alloy was located at the advancing side(AS),the joints owned better fatigue properties due to the bridging effect of the big secondary phase particles. | Zhongjie Yan Xuesong Liu Hongyuan Fang | 2016 | Journal of Materials Science & Technology2016，32，12： | 6 |
| 4 | Simultaneous optical and electrochemical recording of single nanoparticle electrochemistry显示文摘单个 nanoparticle 碰撞为由与电极表面在随机的碰撞期间决定短暂水流学习单个 nanoparticles 的电气化学的活动变得流行。然而,真希望,电气化学的水流被测量,识别并且描绘为在一个碰撞事件的一座特定的当前的山峰负责的单个粒子仍然保持挑战性;这妨碍结构活动关系的理解。此处,我们报导同时光、电气化学单个 nanoparticle 碰撞记录;电气化学的信号与单个 nanoparticle 的活动相应,并且光信号揭示一样的 nanoparticle 的尺寸和地点。因而,结构(光信号) 活动(电气化学的信号) 关系能在单个 nanoparticle 水平被阐明;这包括电池, electrocatalysts,和电气化学的传感器为各种各样的应用有含意。另外,我们的以前的研究建议了一个 optical-to-electrochemical 变换模型独立地从光信号计算单个 nanoparticles 的电子转移率。同时光、电气化学记录在现在的工作完成了启用 optical-to-electrochemical 变换模型的直接、量的确认。 | Linlin Sun Yimin Fang Zhimin Li Wei Wang Hongyuan Chen | 2017 | Nano Research2017，10，5： | 3 |
| 5 | The outbreak of rabbit hemorrhagic virus type 2 in the interior of China may be related to imported semen显示文摘Dear Editor,Rabbit hemorrhagic disease(RHD)is a fatal infectious disease that primarily affects adult rabbits and causes great economic losses in the rabbit industry(Mitro and Krauss,1993).The causative pathogen is rabbit hemorrhagic disease virus(RHDV),which belongs to the genus Lagovirus and the family Calicivirus(Moussa et al.,1992).In 1984,RHDV was first documented in China. | Ruibin Qi Chunchun Meng Jie Zhu Hang Li Qiuhong Miao Jingyu Tang Aoxing Tang Hongyuan Guo Chuncao Liu Chuanfeng Li Zongyan Chen Fang Wang Qinwen Zhang Guangqing Liu | 2022 | Virologica Sinica2022，37，4： | 3 |
| 6 | Intelligent Segmentation and Measurement Model for Asphalt Road Cracks Based on Modified Mask R-CNN Algorithm显示文摘Nowadays, asphalt road has dominated highways around the world. Among various defects of asphalt road, crackshave been paid more attention, since cracks often cause major engineering and personnel safety incidents. Currentmanual crack inspection methods are time-consuming and labor-intensive, and most segmentation methods cannot detect cracks at the pixel level. This paper proposes an intelligent segmentation and measurement model basedon the modified Mask R-CNN algorithm to automatically and accurately detect asphalt road cracks. The modelproposed in this paper mainly includes a convolutional neural network (CNN), an optimized region proposalnetwork (RPN), a region of interest (RoI) Align layer, a candidate area classification network and a Mask branch offully convolutional network (FCN). The ratio and size of anchors in the RPN are adjusted to improve the accuracyand efficiency of segmentation. Soft non-maximum suppression (Soft-NMS) algorithm is developed to improvethe segmentation accuracy. A dataset including 8,689 images (512× 512 pixels) of asphalt cracks is established andthe road crack is manually marked. Transfer learning is used to initialize the model parameters in the trainingprocess. To optimize the model training parameters, multiple comparison experiments are performed, and the testresults show that the mean average precision (mAP) value and F1-score of the optimal trained model are 0.952 and0.949. Subsequently, the robustness verification test and comparative test of the trained model are conducted andthe topological features of the crack are extracted. Then, the damage area, length and average width of the crackare measured automatically and accurately at pixel level. More importantly, this paper develops an automatic crackdetection platform for asphalt roads to automatically extract the number, area, length and average width of cracks,which can significantly improve the crack detection efficiency for the road maintenance industry. | Jiaxiu Dong Jianhua Liu Niannian Wang Hongyuan Fang Jinping Zhang Haobang Hu Duo Ma | 2021 | Computer Modeling in Engineering & Sciences2021，，8： | 3 |
| 7 | Fatigue crack initiation for Al-Zn-Mg alloy welded joint显示文摘To investigate fatigue crack initiation characteristics of Al-Zn-Mg alloy welded joint, notched specimens were used in fatigue test for the base metal, welding bead and heat affected zone (HAZ). The fatigue fracture surface near the fatigue crack initiation site was observed by scanning electron microscope (SEM). The results show that the differences of fatigue crack initiation life among base metal, welding bead and HAZ are not obvious. Inhomogeneity in microstructure and mechanical performance of HAZ influences the fatigue crack initiation life. The ratio of fatigue crack initiation life (Ni) to fatigue failure life (Nf) for the base metal, welding bead and HAZ of A7N01 aluminium alloy welded joint are 26.32%, 40.21% and 60.67%, respectively. Fatigue crack initiation life can be predicted using a uniform model. Observation of fatigue fracture surfaces shows that for the welding bead a fatigue crack initiates from the smooth surface due to the welding process, the blowhole in HAZ causes fatigue crack and the crushed second phase particles play an important role in fatigue crack initiation for the base metal. | Liang ZHANG Xuesong LIU Linsen WANG Ping WANG Hongyuan FANG | 2012 | Acta Metallurgica Sinica(English Letters)2012，25，3： | 2 |
| 8 | Controlling of stress and distortion in thin copper plate by welding with trailing peening显示文摘Welding with trail peening(WTP) is applied in T1 thin copper plate to reduce the residual stress and distortion firstly,which is the very trouble in copper welding.The main principle for this new technology was presented.To make a complete comparison,both experiments and numerical simulations of thin copper plate were carried out under WTP as well as conventional welding(CW).The results confirm that WTP can reduce longitudinal residual stress in welding joint greatly.The peak value of flexure distortion decreases from 30mm under CW to only 9mm by WTP,that is to say,only 30% of CW. | LIU Xuesong,WANG Ping,ZHOU Guangtao,and FANG Hongyuan State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China | 2007 | Rare Metals2007，26，S1： | 2 |
| 9 | Al2_3/Al2O3 Joint Brazed with Al2O3-particulate-contained Composite Ag-Cu-Ti Filler Material显示文摘Microstructure and interfacial reactions of AI2O3 joints brazed with AI2O3-particulate-contained composite Ag-Cu-Tifiller material were researched by scanning electron microscopy (SEM), electron probe microscopy analysis (EPMA),energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The interfacial reaction layer thickness of jointsbrazed with conventional active filler metal and active composite filler materials with different volume fraction ofAI2O3 particulate was also studied. The experimental results indicated although there were AI2O3 particulates addedinto active filler metals, the time dependence of interfacial layer growth of joints brazed with active composite fillermaterial is t1/2 as described by Fickian law as the joints brazed with conventional active filler metal. | Jianguo YANG Hongyuan FANG and Xin WANState Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China | 2005 | Journal of Materials Science & Technology2005，21，5： | 2 |
| 10 | New technique to control welding hot cracking with trailing impactive electromagnetic force显示文摘 | Xu Wei Fang Hongyuan Yang Jianguo | 2008 | Materials Science and Engineering A2008，488，12： | 1 |
| 11 | Dynamic Response Solution of Multi-Layered Pavement Structure Under FWD Load Appling the Precise Integration Algorithm显示文摘The pavement layered structures are composed of surface layer,road base and multi-layered soil foundation.They can be undermined over time by repeated vehicle loads.In this study,a hybrid numerical method which can evaluate the displacement responses of pavement structures under dynamic falling weight deflectometer(FWD)loads.The proposed method consists of two parts:(a)the dynamic stiffness matrices of the points at the surface in the frequency domain which is based on the domain-transformation and dual vector form equation,and(b)interpolates the dynamic stiffness matrices by a continues rational function of frequency.The mixed variables formulation(MVF)can treat multiple degree of freedom systems with considering the coupling term between degree of freedoms.The accuracy of the developed method has been demonstrated by comparison between the proposed method and published results from the other method.Then the proposed method can be applied as a forward calculation technique to emulate the falling weight deflectometer test for multi-layered pavement structures. | Zejun Han Hongyuan Fang Juan Zhang Fuming Wang | 2019 | Computers, Materials & Continua2019，，6： | 1 |
| 12 | A CASSCF/MRCI study toward the understanding of wavelength-dependent and geometrically memorized photodissociation of formic acid显示文摘 | He Hongyuan Fang Weihai | 2001 | J Am Chem Soc2001，123，： | 1 |
| 13 | The bond strength of A1 - Si coating on mild steel by kinetic spraying deposition 显示文摘 | Jingwei Wu Jianguo Yang Hongyuan Fang | 2006 | Applied Surface Science2006，252，22： | 1 |
| 14 | Controlling of weld hot cracks of aluminum alloy sheets by transverse pre-stressing显示文摘A new ideological and theoretical model-a technology to control weld hot cracks by transverse compressive pre-stress in the welding of aluminum alloy was put forward,which was further proved by the subsequent self-designed test setup.Experiments are conducted on the fishbone shaped specimen under conventional welding and welding with various pre-stress values.The experimental results turn out that,the initiation rate of the weld hot cracks decreases with increasing values of the compressive pre-stress.When the pre-stress reaches 0.3-0.4 of the yield stress,the cracks even disappear.In mechanical viewpoint,the researches here develop a new way to control weld cracks. | LIU Xuesong,ZHOU Guangtao,WANG Ping,and FANG Hongyuan State Key Laboratory of Advanced Welding Technology Production,Harbin Institute of Technology,Harbin 150001,China | 2007 | Rare Metals2007，26，S1： | 1 |
| 15 | TeaPGDB:Tea Plant Genome Database显示文摘As the most widely consumed beverage in the world,tea has various nutritional,economic,and global cultural values.With the development of the third-generation sequencing technology,several genome sequences of tea plants have been published.These genomic data have pivotal information that is of benefit to tea plant breeders and biologists in advancing tea plant improvement and the final quality of tea products.We hereby present the integrative online database,Tea Plant Genome Database(TeaPGDB;http://gffzz33ea8dac98494cc2hw9bx5fbnkxck6f5q.ffgz.tsg.suse.edu.cn/tea),which incorporates the published genome sequences of tea plants.The current release of TeaPGDB hosts published tea plant genome data with various online tools,including JBrowse,gene search,SSR search,BLAST.TeaPGDB also contains a download server,which provides access for the download of genome-related data and rich annotation files.TeaPGDB is committed to collecting,integrating,and annotating published tea plant genome data,providing data support for research on tea plant heredity,evolution,breeding for resistance,plant improvement,and facilitating the characterization of important traits or flavor related genes in the community.Compared with other tea plant databases,this database not only contains more complete genome data and gene annotation information,but also has a user-friendly interface for researchers in the field. | Xiaogang Lei Ya Wang Yuhan Zhou Yongzhong Chen Hongyuan Chen Zhongwei Zou Lin Zhou Yuanchun Ma Fei Chen Wanping Fang | 2021 | Beverage Plant Research2021，1，1： | 1 |
| 16 | Mea- surement of particle velocity and characterization of deposi- tion in aluminum alloy kinetic spraying process显示文摘 | Wu Jingwei Fang Hongyuan Yoon Sanghoon | 2005 | Appl Surf Sci2005，252，5： | 1 |
| 17 | The bond strength of A1 Si coating on mild steel by kinetic spra-ying deposition显示文摘 | Wu Jingwei Yang Jianguo Fang Hongyuan | 2006 | Appl Surf Sci2006，252，22： | 1 |
| 18 | The rebound phenomenon in kinetic spraying deposition 显示文摘 | Wu Jingwei Fang Hongyuan Yoon Sanghoon | 2006 | Scr Mater2006，54，： | 1 |
| 19 | Analysis of temperature and stress field in A1 alloy' s twin wire welding 显示文摘 | Meng Qingguo Fang Hongyuan Yang Jianguo | 2005 | Theoretical and Applied Fracture Mechanics2005，44，2： | 1 |
| 20 | Measurement of particle velocity and characterization of deposition in aluminum alloy kinetic spraying process 显示文摘 | Wu Jingwei Fang Hongyuan Yoon Sanghoon | 2005 | Appl Surf Sci2005，252，： | 1 |
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