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| 1 | Quantitative Metal Magnetic Memory Reliability Modeling for Welded Joints显示文摘Metal magnetic memory(MMM) testing has been widely used to detect welded joints. However, load levels, environmental magnetic field, and measurement noises make the MMM data dispersive and bring difficulty to quantitative evaluation. In order to promote the development of quantitative MMM reliability assessment, a new MMM model is presented for welded joints. Steel Q235 welded specimens are tested along the longitudinal and horizontal lines by TSC-2M-8 instrument in the tensile fatigue experiments. The X-ray testing is carried out synchronously to verify the MMM results. It is found that MMM testing can detect the hidden crack earlier than X-ray testing. Moreover, the MMM gradient vector sum K_(vs) is sensitive to the damage degree, especially at early and hidden damage stages. Considering the dispersion of MMM data, the K_(vs) statistical law is investigated, which shows that K_(vs) obeys Gaussian distribution. So K_(vs) is the suitable MMM parameter to establish reliability model of welded joints. At last, the original quantitative MMM reliability model is first presented based on the improved stress strength interference theory. It is shown that the reliability degree R gradually decreases with the decreasing of the residual life ratio T, and the maximal error between prediction reliability degree R_1 and verification reliability degree R_2 is 9.15%. This presented method provides a novel tool of reliability testing and evaluating in practical engineering for welded joints. | XING Haiyan DANG Yongbin WANG Ben LENG Jiancheng | 2016 | Chinese Journal of Mechanical Engineering2016，29，2： | 4 |
| 2 | Mg AmorphousZr_(0.9)Ti_(0.1)(Ni_(0.57)Mn_(0.28)V_(0.1)Co_(0.05))_(2.1)Composite for Hydrogen Storage显示文摘The reactive mechanical alloying (RMA) method was used to produce Mg-40 wt pct amorphous Zr0.9Ti0.1(Ni0.57-Mn0.25V0.1Co0.05)2.1 composite in this study, and the absorption/desorption property of the composite was improved remarkably. The composite possessed excellent kinetic properties even at moderate temperature (393 K) without activation. Owing to the formation of the embrittle MgH2, the reactive mechanical milling process reduced the particle size of Mg and made the composite phase being highly efficiently distributed, which determined the excellent hydriding properties of the composite. | Haiyan LENG, Demin CHEN, Manqi LU, Haifeng ZHANG, Huiming CHENG and Ke YANGInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | 2003 | Journal of Materials Science & Technology2003，19，2： | 2 |
| 3 | Stability of superconducting Nd_(0.8)Sr_(0.2)NiO_(2) thin films显示文摘The discovery of superconducting states in the nickelate thin film with infinite-layer structure has paved a new way for studying unconventional superconductivity.So far,research in this field is still very limited due to difficulties in sample preparation.Here we report the successful preparation of the superconducting state of Nd_(0.8)Sr_(0.2)NiO_(2)thin film(T_(c)=8.0-11.1 K)and study the stability of such films in the ambient environment,water,and under electrochemical conditions.Our work demonstrates that the superconducting state of Nd_(0.8)Sr_(0.2)NiO_(2)is remarkably stable,which can last for at least 47-day continuous exposure to air at 20°C and 35%relative humidity.We also show that the superconductivity disappears after being immersed in de-ionized water at room temperature for 5 h.Surprisingly,it can also survive under ionic liquid gating conditions with an applied voltage of about 4 V,which is even more stable than conventional perovskite complex oxides. | Xiang Ding Shengchun Shen Huaqian Leng Minghui Xu Yan Zhao Junrui Zhao Xuelei Sui Xiaoqiang Wu Haiyan Xiao Xiaotao Zu Bing Huang Huiqian Luo Pu Yu Liang Qiao | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，6： | 2 |
| 4 | Development of transgenic zebrafish for ornamental and bioreactor by strong expression of fluorescent proteins in the skeletal muscle显示文摘 | Wan Haiyan Tuan Leng Tay | 2003 | Biochemical and Biophysical Research Communications2003，308，： | 1 |
| 5 | Predictors of return to work and duration of absence following work-related hand injury显示文摘 | Jia Hu Yu Jiang Youxin Liang Ignatius Tak Sun Yu Haiyan Leng Yonghua He | 2014 | International Journal of Injury Control and Safety Promotion2014，，3： | 1 |
| 6 | J Phys Chem B显示文摘 | Leng Haiyan Ichikawa Takayuki Hironobu Fujii | 2006 | 110:12 9642006，110，12： | 1 |
| 7 | J Phys Chem B显示文摘 | Leng Haiyan Takayuki Ichikawa Satoshi Hino | 2005 | 109:10 7442005，109，10： | 1 |
| 8 | The hydrogen storage performance and catalytic mechanism of theMgH_(2)-MoS_(2)composite显示文摘In this work,we synthesized MoS_(2)catalyst via one-step hydrothermal method,and systematically investigated the catalytic effect of MoS_(2)on the hydrogen storage properties of MgH_(2).The MgH_(2)-5MoS_(2)composite milled for 5 h starts to release hydrogen at 259℃.Furthermore,it can desorb 4.0 wt.%hydrogen within 20 min at 280℃,and absorb 4.5 wt.%hydrogen within 5 min at 200℃.Mo and MoS_(2)coexistedin the ball milled sample,whereas only Mo was kept in the sample after dehydrogenation and rehydrogenation,which greatly weakens theMg-H bonds and facilitates the dissociation of MgH_(2)on the surface of Mo(110).The comparative study show that the formed MgS has nocatalytic effect for MgH_(2).We believed that the evolution and the catalytic mechanism of MoS_(2)will provide the theoretical guidance for theapplication of metal sulfide in hydrogen storage materials. | Luxiang Wang Yiwanting Hu Jiayu Lin Haiyan Leng Chenghua Sun Chengzhang Wu Qian Li Fusheng Pan | 2023 | Journal of Magnesium and Alloys2023，11，7： | 0 |
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