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Toward an ideal electrical resistance strain gauge using a bare and single straight strand metallic glassy fiber

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Science China(Physics,Mechanics & Astronomy) 2012年第4期55卷 609-613页

作者： YI Jun HUO LiShan zhao deqian PAN MinXiang BAI HaiYang WANG WeiHua Institute of Physics Chinese Academy of SciencesBeijing 100190China

Electrical resistance strain gauges(SGs) are useful tools for experimental stress analysis and the strain sensing elements in many electromechanical transducers including load cells,pressure transducers,torque meters,accelerometers,force cells,displacement transducers and so *** commonly used commercial crystalline strain sensing materials of SGs are in the form of wire or foil of which performance and reliability is not good enough due to their low electrical resistivity and incapacity to get thin *** SGs with single straight strand strain sensing materials,which are called ideal SG,are highly desirable for more than seven decades since the first SG was ***,we show the development of a type of minuscule length scale strain gauge by using a bare and single straight strand metallic glassy fiber(MGF) with high resistivity,much smaller lengthscale,high elastic limits(2.16%) and especially the super piezoresistance *** anticipate that our metallic glassy fiber strain gauge(MGFSG),which moves toward the ideal SGs,would have wide applications for electromechanical transducers and stress analysis and catalyze development of more micro-and nanoscale metallic glass applications.

关键词： metallic glassy fiber strain gauge strain sensing material metallic glassy fiber strain gauge

Effect of Li and Ti Additions on Lα(Al)+Mg_2Si Pseudobinary Eutectic Reaction

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Journal of Materials Science & Technology 1997年第6期13卷 487-490页

作者： Shengxu zhao Shunpu LI deqian zhao Mingxiang PAN and Xichen CHEN(Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China) Institute of Physics Chinese Academy of Sciences Beijing 100080 China

Effect of Li and Ti additions on Lα(AI)+Mg2Si pseudobinary eutectic reaction in ternary Al-Mg-Si system has been investigated by thermoanalysis, directional solidification and metallographic techniques in this study. It has been found that Li addition causes decreasing of the volume fraction of Mg2Si, while a little amount of Ti causes to increasing, which is of a great importance to the adjustment of phase constitution and alloy properties. Doping components have little influence on the eutectic temperature.

关键词： Si Al Mg2Si Pseudobinary Eutectic Reaction Effect of Li and Ti Additions on L Li Ti

SOLIDIFICATION PROCESS OF α(Al)-Mg_2Ge PSEUDOBINARY EUTECTIC ALLOYS

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中国有色金属学会会刊：英文版 1998年第1期8卷 15-18页

作者： zhao Shengxu, Li Shunpu, zhao deqian, Pan Mingxiang and Chen XichenInstitute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China

ＳＯＬＩＤＩＦＩＣＡＴＩＯＮＰＲＯＣＥＳＳＯＦα（Ａｌ）Ｍｇ２ＧｅＰＳＥＵＤＯＢＩＮＡＲＹＥＵＴＥＣＴＩＣＡＬＬＯＹＳ①ＺｈａｏＳｈｅｎｇｘｕ，ＬｉＳｈｕｎｐｕ，ＺｈａｏＤｅｑｉａｎ，ＰａｎＭｉｎｇｘｉａｎｇａｎｄ... 详细信息

ＳＯＬＩＤＩＦＩＣＡＴＩＯＮＰＲＯＣＥＳＳＯＦα（Ａｌ）Ｍｇ２ＧｅＰＳＥＵＤＯＢＩＮＡＲＹＥＵＴＥＣＴＩＣＡＬＬＯＹＳ①ＺｈａｏＳｈｅｎｇｘｕ，ＬｉＳｈｕｎｐｕ，ＺｈａｏＤｅｑｉａｎ，ＰａｎＭｉｎｇｘｉａｎｇａｎｄＣｈｅｎＸｉｃｈｅｎＩｎｓｔｉｔｕ...

关键词： eutectic solidification mechanism branching preferred growth direction nucleation

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Zr基块体金属玻璃的形成和性能

金属学报 2000年第11期36卷 1153-1156页

作者：张勇赵德乾庄艳歆潘明祥汪卫华中国科学院物理研究所北京100080

研究了一系列具有很强非晶形成能力（ＧＦＡ）和优异性能的块体金属玻璃（ＢＭＧ）及含有纳米晶的ＢＭＧ的制备过程，结果表明，对掺碳的Ｚｒ／Ｔｉ基ＢＭＧ，当碳含量（原子分数，％，下同）在１—２时，合金具有很宽的过冷液相区... 详细信息

研究了一系列具有很强非晶形成能力（ＧＦＡ）和优异性能的块体金属玻璃（ＢＭＧ）及含有纳米晶的ＢＭＧ的制备过程，结果表明，对掺碳的Ｚｒ／Ｔｉ基ＢＭＧ，当碳含量（原子分数，％，下同）在１—２时，合金具有很宽的过冷液相区（ＳＬＲ，晶化开始温度Ｔｘ和玻璃转变温度Ｔｇ之间的温区）和较高的约化玻璃转变温度Ｔｒｇ（Ｔｒｇ－Ｔｇ／Ｔｍ）；当碳含量增至３—８时，合金为含有纳米晶ＺｒＣ的ＢＭＧ基复合材料加Ｆｅ的Ｚｒ／Ｔｉ基ＢＭＧ的Ｆｅ含量最高可以达到８，当Ｆｅ含量为１０—１５时得到的是含有纳米晶Ｚｒ２Ｆｅ的ＢＭＧ材料．Ｚｒ／Ｎｂ基ＢＭＧ的ＧＦＡ和Ｚｒ／Ｔｉ基ＢＭＧ的ＧＦＡ相当，但是Ｔｇ和Ｔｘ更高，因此具有更好的热稳定性．含Ｆｅ的Ｚｒ／Ｎｂ基ＢＭＧ在Ｆｅ含量为８时具有最高的ＧＦＡ．Ｚｒ／Ｔｉ基ＢＭＧ中掺入Ｙ，可使其Ｙｏｕｎｇ’ｓ模量、切变模量高于其他Ｚｒ基

关键词：块体金属玻璃 Zr基合金热稳定性超声测量

微重力条件下块体金属玻璃的若干基础问题研究进展

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中国材料进展 2017年第12期36卷 880-893页

作者：闻平王彬彬丁大伟赵德乾汪卫华中国科学院物理研究所北京100190

玻璃是最古老也是现代应用最广的材料之一,列属于非晶态物质,组成单元的无序排列致使其物理本质、物性的内涵以及性能优化等依旧是当代材料、物理和化学学科研究热点和难点。作为新型合金材料和玻璃,金属玻璃,特别是块体金属玻璃,尽管... 详细信息

玻璃是最古老也是现代应用最广的材料之一,列属于非晶态物质,组成单元的无序排列致使其物理本质、物性的内涵以及性能优化等依旧是当代材料、物理和化学学科研究热点和难点。作为新型合金材料和玻璃,金属玻璃,特别是块体金属玻璃,尽管出现较晚,但因具有重要潜在应用价值和基础理论研究意义,一经出现就受到了广泛关注。微重力条件下块体金属玻璃研究不仅促进了玻璃形成机理、液体热力学特征、过冷液体动力学行为以及深过冷液体形核与长大等等长期存在的基础理论问题研究,也推动着此类材料的实际应用。在梳理了过去30年来国内外块体金属玻璃微重力条件下研究进展的基础上,对于未来国内块体金属玻璃微重力条件下的研究进行了展望。

关键词：金属玻璃微重力:玻璃化转变热力学与动力学

Impact of Startup Strategy and Buffer Tank Volume on the Compressor Inlet State for a 3-MW sCO2 Brayton Cycle

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Journal of Thermal Science 2025年第1期34卷 159-175页

作者： zhao Decai WANG Bo Key Laboratory of Advanced Energy and Power Institute of Engineering Thermophysics(IET)Chinese Academy of Sciences (CAS) University of Chinese Academy of Sciences

The supercritical carbon dioxide（sCO2） Brayton cycle system has become an emerging and highly promising method of thermal power conversion due to its efficiency advantage,system compactness,and excellent adaptability of the heat *** the low carbon sCO2Brayton cycle testbed with cycle output power approaching 3 MW,a relatively detailed dynamic simulation model of the entire system is constructed to explore the dynamic response characteristics of the system with different startup strategies and different buffer tank volumes during the startup *** simulation results indicate that the smaller the volume of the buffer tank,the more rapid and obvious the parameter fluctuation in the buffer tank during the *** the allowable relative deviation limit of density is 5%,then the ratio of the buffer tank volume to the volume of the entire closed loop should not be lower than 36.80%.The strategy of simultaneous temperature and speed increase during turbine bypass start can effectively reduce the fluctuation of compressor inlet parameters and reach the steady-state more *** paper provides the recommended matching table for the opening of the turbine bypass valve（TBV） and the main regulating valve（MGV） to reduce the parameter fluctuation during the bypass *** effectiveness of the proposed turbine bypass and bypass switching startup strategy is verified by simulation,which may be used as a reference for test bench's future debugging and operation.

关键词： buffer tank dynamic characteristic dynamic model sCO2 Brayton cycle startup strategy

LiDAR-Visual SLAM with Integrated Semantic and Texture Information for Enhanced Ecological Monitoring Vehicle Localization

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Computers, Materials & Continua 2025年第1期82卷 1401-1416页

作者： Yiqing Lu Liutao zhao Qiankun zhao Foreign Environmental Cooperation Center Ministry of Ecology and Environment of PRCBeijing100035China Beijing Computing Center Co. Ltd.Beijing Academy of Science and TechnologyBeijing100083China Beijing Guyu Interactive Artificial Intelligence Application Co. Ltd.Beijing100024China

Ecological monitoring vehicles are equipped with a range of sensors and monitoring devices designed to gather data on ecological and environmental *** vehicles are crucial in various fields,including environmental science research,ecological and environmental monitoring projects,disaster response,and emergency management.A key method employed in these vehicles for achieving high-precision positioning is LiDAR(lightlaser detection and ranging)-Visual Simultaneous Localization and Mapping(SLAM).However,maintaining highprecision localization in complex scenarios,such as degraded environments or when dynamic objects are present,remains a significant *** address this issue,we integrate both semantic and texture information from LiDAR and cameras to enhance the robustness and efficiency of data ***,semantic information simplifies the modeling of scene elements,reducing the reliance on dense point clouds,which can be less ***,visual texture information complements LiDAR-Visual localization by providing additional contextual *** incorporating semantic and texture details frompaired images and point clouds,we significantly improve the quality of data association,thereby increasing the success rate of *** approach not only enhances the operational capabilities of ecological monitoring vehicles in complex environments but also contributes to improving the overall efficiency and effectiveness of ecological monitoring and environmental protection efforts.

关键词： LiDAR-Visual simultaneous localization and mapping integrated semantic texture information

Zr-Ti-Cu-Ni-Be-Fe块体非晶合金及非晶基纳米复合材料的形成及其性能

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金属学报 2000年第3期36卷 329-333页

作者：赵德乾庄艳歆张勇潘明祥吴光恒孟丽琴汪卫华中国科学院物理研究所北京100080

采用水淬法制备出了块状、高强度Ｚｒ－Ｔｉ－Ｃｕ－Ｎｉ－Ｂｅ－Ｆｅ非晶合金研究了铁原子组元对Ｚｒ－Ｔｉ－Ｃｕ－Ｎｉ－Ｂｅ－Ｆｅ块体非晶形成能力、硬度、磁化率及其热稳定性的影响结果表明，当Ｆｅ含量超过１０％（原子分数... 详细信息

采用水淬法制备出了块状、高强度Ｚｒ－Ｔｉ－Ｃｕ－Ｎｉ－Ｂｅ－Ｆｅ非晶合金研究了铁原子组元对Ｚｒ－Ｔｉ－Ｃｕ－Ｎｉ－Ｂｅ－Ｆｅ块体非晶形成能力、硬度、磁化率及其热稳定性的影响结果表明，当Ｆｅ含量超过１０％（原子分数）时。

关键词：非晶合金非晶形成能力硬度磁化率复合材料

大孔吸附树脂对药桑多糖的脱色及抗氧化活性影响

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中国农学通报 2016年第33期32卷 147-150页

作者：龚敏赵德前孙慧洁海南省现代农业检验检测预警防控中心海口570100 石河子大学化学化工学院新疆石河子832003

研究大孔吸附树脂对药桑多糖脱色工艺和脱色前后多糖抗氧化活性变化的影响。采用静态吸附法筛选出对药桑多糖具有最佳脱色效果的树脂,动态吸附法系统地研究吸附工艺条件,采用DPPH·自由基法对脱色前后多糖抗氧化活性进行对比研究。NKA-... 详细信息

研究大孔吸附树脂对药桑多糖脱色工艺和脱色前后多糖抗氧化活性变化的影响。采用静态吸附法筛选出对药桑多糖具有最佳脱色效果的树脂,动态吸附法系统地研究吸附工艺条件,采用DPPH·自由基法对脱色前后多糖抗氧化活性进行对比研究。NKA-9型大孔树脂对药桑多糖的脱色效果最佳。药桑多糖脱色率可达61.8%,最佳脱色条件为:流速:4.8 BV/h,多糖浓度:3.261 mg/m L,洗脱剂浓度:60%。在该工艺条件下,药桑多糖的脱色率可达到最大,脱色后多糖抗氧化活性有所增强。

关键词：药桑粗多糖脱色大孔树脂抗氧化活性