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| 1 | Improving weld formability by a novel dual-rotation bobbin tool friction stir welding显示文摘A novel dual-rotation bobbin tool friction stir welding(DBT-FSW) was developed, in which the upper shoulder(US) and lower shoulder(LS) have different rotational speeds. This process was tried to weld 3.2 mm thick aluminum-lithium alloy sheets. The metallographic analysis and torque measurement were carried out to characterize the weld formability. Experimental results show that compared to conventional bobbin tool friction stir welding, the DBT-FSW has an excellent process stability, and can produce the defect-free joints in a wider range of welding parameters. These can be attributed to the significant improvement of material flow caused by the formation of a staggered layer structure and the unbalanced force between the US and LS during the DBT-FSW process. | F.F.Wang W.Y.Li J.Shen Q.Wen J.F.dos Santos | 2018 | Journal of Materials Science & Technology2018，34，1： | 9 |
| 2 | Force-based and displacement-based reliability assessment approaches for highway bridges under multiple hazard actions显示文摘The strength limit state of American Association of State Highway and Transportation Officials(AASHTO) Load and Resistance Factor Design(LRFD) Bridge Design Specifications is developed based on the failure probabilities of the combination of non-extreme loads.The proposed design limit state equation(DLSE) has been fully calibrated for dead load and live load by using the reliability-based approach. On the other hand, most of DLSEs in other limit states, including the extreme events Ⅰ and Ⅱ, have not been developed and calibrated though taking certain probability-based concepts into account. This paper presents an assessment procedure of highway bridge reliabilities under the limit state of extreme eventⅠ, i. e., the combination of dead load, live load and earthquake load. A force-based approach and a displacement-based approach are proposed and implemented on a set of nine simplified bridge models. Results show that the displacement-based approach comes up with more convergent and accurate reliabilities for selected models, which can be applied to other hazards. | Chao Huang Jerry J.Shen Mi Zhou George C.Lee | 2015 | Journal of Traffic and Transportation Engineering(English Edition)2015，2，4： | 6 |
| 3 | Microstructure and Mechanical Properties of a Dissimilar Friction Stir Weld between Austenitic Stainless Steel and Low Carbon Steel显示文摘Dissimilar fusion welding of austenitic stainless steels to carbon steels has some metallurgical and technical problems.It was suggested that the solid-state nature of friction stir welding(FSW) can overcome these problems and produce a sound weld with reliable mechanical properties.In this study,plates of 304 stainless steel and st37 steel were welded together by FSW at tool rotational speed of 600 r/min and welding speed of 50 mm/min.In the stir zone(SZ) of 304 stainless steel,the results showed a refined grain structure with some features of metadynamic recrystallization.In the SZ of st37 steel,the hot deformation of material in the austenite region produced small austenite grains.These grains transformed to fine ferrite and pearlite by cooling the material after FSW.The production of fine grains increased the hardness and tensile strength in the SZ of both sides with respect to their base metals(BMs). | M Jafarzadegan A.Abdollah-zadeh A.H.Feng T.Saeid J.Shen H.Assadi | 2013 | Journal of Materials Science & Technology2013，29，4： | 6 |
| 4 | Meta‐analysis: the effect of supplementation with probiotics on eradication rates and adverse events during Helicobacter pylori eradication therapy显示文摘 | J. L.TONG Z. H.RAN J.SHEN C. X.ZHANG S. D.XIAO | 2006 | Alimentary Pharmacology & Therapeutics2006，，2： | 1 |
| 5 | 震前蠕变滑移的地震预报意义:来自纳/微米尺度地质构造证据显示文摘对采自郯庐活动断裂带及其分支活动断裂的最新断层泥样品,在纳/微米尺度下进行观察,发现发震断层在黏滑滑移之前,普遍存在蠕变滑移现象。表现为黏土片状矿物的褶皱、绕砾滑动、“流水状”排列、撕裂等变形形式。这种蠕变滑移对应于岩石在应力作用下进入屈服阶段尤其是亚失稳阶段的韧性变形。由于这一变形阶段改变了物质结构,故在震源区附近会引起诸多地震前兆物理量变化。鉴于黏滑滑移即将发生,因此这一阶段是捕捉地震前兆的最佳时机,也许是最后的机会。我们认为,发震断层的震前蠕变滑移具有地震预报意义。 | H.T.Chao Z.C.Wang L.Wang Y.Sun J.Shen 王雷(译) 王志才(校) | 2020 | 世界地震译丛2020，51，1： | 1 |
| 6 | Low-Cycle Fatigue Properties of Nickel-Based Superalloys Processed by High-Gradient Directional Solidification显示文摘The low-cycle fatigue(LCF) properties of DD10(single-crystal) and DZ53(columnar-grained) superalloys solidified by liquid–metal cooling(LMC) and high-rate solidification(HRS) processes have been systematically investigated. It was found that the LCF life of DZ53 solidified by LMC was obviously better than that solidified by HRS. In contrast, for DD10, LMC showed no remarkable influences on LCF properties at high temperature and only improved LCF properties at intermediate temperature. Microstructure examination showed that the cracks generally initiated at micropores in the subsurface at intermediate temperature. However, the cracks occurred on the surface due to oxidation, or persistent slip bands near script-MC at high temperature. Therefore, the benefits of LMC technique can be attributed to both of the reduced casting defects which significantly affect the LCF properties at intermediate temperature and the improved microstructural homogeneity which was strongly correlated to the LCF properties of alloys at high temperature. | Z.D.Fan D.Wang C.Liu G.Zhang J.Shen L.H.Lou J.Zhang | 2017 | Acta Metallurgica Sinica(English Letters)2017，30，9： | 1 |
| 7 | Prevalence and predictors of renal artery stenosis in Chinese patients with coronary artery disease显示文摘 | Y.Wang D. S. W.Ho W. H.Chen Y. Q.Wang W. F.Lam Z. J.Shen C. Z.Lu M.Chui | 2003 | Internal Medicine Journal2003，，7： | 1 |
| 8 | Transient Appearance of Hepatic Natural Killer Cells with High Cytotoxicity and Unique Phenotype in Very Young Mice显示文摘 | X.Bai S.Wang C.Tomiyama‐Miyaji J.Shen T.Taniguchi N.Izumi C.Li H. Y.Bakir T.Nagura S.Takahashi T.Kawamura T.Iiai H.Okamoto K.Hatakeyama T.Abo | 2006 | Scandinavian Journal of Immunology2006，，4： | 1 |
| 9 | 查看详情显示文摘 | X.Wang J.Shen Y.Liu | | 0，，： | 1 |
| 10 | Abnormal macropore formation during double-sided gas tungsten arc welding of magnesium AZ91D alloy显示文摘 | J.Shen G.Q.You S.Y.Long F.S.Pan | | 0，，8： | 1 |
| 11 | Effect of heat input on the microstructure and mechanical properties of tungsten inert gas arc butt-welded AZ61 magnesium alloy plates显示文摘 | D.Min J.Shen S.Q.Lai J.Chen | | 0，，12： | 1 |
| 12 | Abnormal distribution of microhardness in tungsten inert gas arc butt-welded AZ61 magnesium alloy plates显示文摘 | N.Xu J.Shen W.D.Xie L.Z.Wang D.Wang and D.Min | | 0，，： | 1 |
| 13 | Synthesis of Silicone-containing Epoxide and its Application on Silk Crease-resist Finishing显示文摘 | Z.Cai J.Shen K.Sun | | 0，，1： | 1 |
| 14 | Formation and properties of self-organized Ⅱ-Ⅵ quantum islands显示文摘 | E.Kuaz J.Shen M.Schmidt | | 0，，： | 1 |
| 15 | Composition and size dependent torsion fracture of metallic glasses显示文摘The fracture of metallic glasses(MGs)of different compositions and sizes down to micrometers under torsion loading were systematically investigated.Contrary to the flat shear fracture along the circumferential plane as commonly supposed under torsion,we find that the torsion fracture of metallic glasses can deviate from flat shear plane,and the fracture angle is closely dependent on the composition and the size of MG samples.With a conversion method,we show that the torsion fracture of both millimeterand micrometer-sized MGs can be described by the ellipse fracture criterion as originally proposed for the tension fracture.The deviation from the circumferential shear plane under torsion is further shown to intrinsically relate to the fracture toughness of MGs.The tougher MG tends to have a smaller fracture angle with respect to the maximum shear plane,and vice versa,indicating a correlation between the fracture toughness and pressure/normal stress sensitivity in MGs.Our results provide new insights on the fracture mechanism and are helpful to design and control the deformation and fracture behavior of MGs under torsion loading. | J.Dong J.Shen Y.H.Sun H.B.Ke B.A.Sun W.H.Wang H.Y.Bai | 2021 | Journal of Materials Science & Technology2021，，23： | 1 |
| 16 | On Geometric and Orthogonal Moments显示文摘 | J.Shen W.Shen D.F.Shen | | 0，，： | 1 |
| 17 | Meta‐analysis: the effect of supplementation with probiotics on eradication rates and adverse events during Helicobacter pylori eradication therapy显示文摘 | J. L.TONG Z. H.RAN J.SHEN C. X.ZHANG S. D.XIAO | 2006 | Alimentary Pharmacology & Therapeutics2006，，2： | 1 |
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