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Bioinspired Strategies for Excellent Mechanical Properties of Composites

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Journal of Bionic Engineering 2022年第5期19卷 1203-1228页

作者： Xianchang Peng Binjie Zhang Ze Wang wenbo su Shichao Niu Zhiwu Han Luquan Ren Key Laboratory of Bionic Engineering Ministry of EducationJilin University130022 ChangchunChina Weihai Institute for Bionics Jilin UniversityWeihai 264200China School of Mechanical and Aerospace Engineering Jilin UniversityChangchun 130022China

Developing high-performance composite materials is of great significance as a strong support for high-end ***,the design and optimization of composite materials lack a theoretical basis and guidance *** with traditional composite materials,natural materials are composed of relatively limited components but exhibit better mechanical properties through ingenious and reasonable synthetic *** on this,learning from nature is considered to be an effective way to break through the bottleneck of composite design and *** this review,the recent progress of natural composites with excellent properties is *** factors,including structures,components and interfaces,are first summarized to reveal the strategies of natural materials to achieve outstanding mechanical *** addition,the manufacturing technologies and engineering applications of bioinspired composite materials are ***,some scientific challenges and outlooks are also proposed to promote next-generation bioinspired composite materials.

关键词： Bioinspired Composites Mechanical properties Manufacturing technologies Engineering application

Cenozoic low temperature cooling history of the eastern Lhasa terrane:Implications for high-relief topography of external drainage area in the southern Tibetan Plateau

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Geoscience Frontiers 2023年第5期14卷 126-140页

作者： wenbo su Zhiyuan He Linglin Zhong Stijn Glorie Kanghui Zhong Johan De Grave Laboratory for Mineralogy and Petrology Department of GeologyGhent UniversityKrijgslaan 281 S89000 GhentBelgium College of Earth Sciences Chengdu University of TechnologyChengdu 610059China Department of Earth Sciences School of Physical SciencesThe University of AdelaideSA-5005Australia

The Tibetan Plateau geographically contains internal and external drainage areas based on the distributions of river flows and *** internal and external drainage areas display similar highelevations,while their topographic reliefs are not comparable;the former shows a large low-relief surface,whereas the latter is characterized by relatively high *** eastern Lhasa terrane is a key tectonic component of the Tibetan *** is characterized by high topography and relief,but the thermal history of its basement remains relatively poorly *** this study we report new apatite fission track data from the eastern part of the central Lhasa terrane to constrain the thermo-tectonic evolution of the external drainage area in the southern Tibetan ***-one new AFT ages and associated thermal history models reveal that the basement underlying the external drainage area in southern Tibet experienced three main phases of rapid cooling in the *** Paleocene-early Eocene(-60–48 Ma)cooling was likely induced by crustal shortening and associated rock exhumation,due to accelerated northward subduction of the NeoTethys oceanic lithosphere.A subsequent cooling pulse lasted from the late Eocene to early Oligocene(-40–28 Ma),possibly due to the thickening and consequential erosion of the Lhasa lithosphere resulted from the continuous northward indentation of the India plate into *** most recent rapid cooling event occurred in the middle Miocene-early Pliocene(-16–4 Ma),likely induced by accelerated incision of the Lhasa River and local thrust *** AFT ages and published low-temperature thermochronological data reveal that the external drainage area experienced younger cooling events compared with the internal drainage area,and that the associated differentiated topographic evolution initiated at ca.30 *** contributing factors for the formation of the high-relief topography mainly contain active surface uplift,fault activity,

关键词： Cenozoic Apatite fission track thermochronology Exhumation Lhasa terrane External drainage area Tibetan Plateau

SHRIMP U-Pb dating for a K-bentonite bed in the Tieling Formation,North China

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Chinese Science Bulletin 2010年第29期55卷 3312-3323页

作者： su wenbo LI HuaiKun HUFF W D ETTENSOHN F R ZHANG ShiHong ZHOU HongYing WAN YuSheng School of Earth Sciences and Resources China University ofGeosciences (Beijing) Beijing 100083 China Tianjin Institute of Geology and Mineral Resources China Geological Survey Tianjin 300170 China Department of Geology University of Cincinnati Cincinnati OH 45221-0013 USA Department of Earth and Environment Sciences University of Kentucky Lexington KY 40506-0053 USA Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

A SHRIMP U-Pb zircon age of 1437±21 Ma was obtained for a recently discovered K-bentonite bed in the Tieling Formation,situated northeast of Beijing at the boundary between Liaoning and Hebei provinces,on the northern margin of the North China Craton(NCC).The SHRIMP U-Pb age places Tieling Formation near the end of the Calymmian Period of the early Mesoproterozoic *** addition,a SHRIMP U-Pb zircon date of 1372±18 Ma was acquired for K-bentonite beds in the overlying,dark-shale-dominated Xiamaling Formation from the same location northeast of *** date assigns a similar Mid-Mesoproterozoic(Ectasian Period) age for the Xiamaling Formation,as have previously determined dates from other sections northwest of *** dates indicate that the Tieling and Xiamaling formations,as well as the related succession in the eastern part of the Yanshan Mountains,represented by the well-known Meso-to Neoproterozoic standard section in Jixian,can be correlated well with sections northwest of Beijing in the western part of the Yanshan *** other words,the boundary between the Calymmian and Ectasian periods in the northern parts of the NCC is marked by the unconformity between the Tieling and Xiamaling formations in the northern *** boundary was previously ascribed to the "Qinyu Orogeny" and thought to be of Grenville *** this regard,the conventional "Qinyu Orogeny" should now be regarded as a short-lived regional uplift during Early Mesoproterozoic time,rather than a result from the Grenvillian assembly of the NCC to the Rodinia supercontinent(～1.0 Ga).

关键词： SHRIMP 铁岭组膨润土 Pb 锆石中国 Rodinia超大陆中元古代早期

Continental island from the Upper Silurian (Ludlow) Sino-Korean plate

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Chinese Science Bulletin 2001年第3期46卷 238-241页

作者： RONG Jiayu M.E.Johnson B.G.Baarli LI Wenguo su wenbo WANG Jian Nanjing Institute of Geology and Palaeontology Chinese Academy of SciencesNanjing 210008China Geosciences Department Williams CollegeWilliamstownMassachusetts 01267USA Inner Mongolian Geological survey Hohhot 010010China Department of Geology Chinese University of GeologyBeijing 100083China

Recent field studies on Upper Silurian stratigraphy and paleontology in the Inner Mongolia Autonomous Region (for short Inner Mongalia) near Bater Obo (=Bateaobao) resulted in the discovery of a small continental island with fossil invertebrates preserved as encrusters (stromatoporoids and corals) attached directly to a rocky shore surface and buried by silty clay mud. The Bater island (named herein) is 610 m ×200 m in size and composed of Ordovician igneous rock (diorite). Limestone strata dating from the Ludlow Epoch (about 420 Ma) surround the island and dip away from the igneous core in a radial pattern. The encrusting fossils occur on the sheltered (south and southeast) side of the island, whereas the north side was exposed to stronger wave activity based on a basal conglomerate unit composed of diorite boulders. This is the first record of an ancient island in China and the first report worldwide of stromatoporoids as members of a rocky-shore community. The island clearly shows distinct windward

关键词： Silurian island Sino-Korean plate rocky shores encrusting biota

Zircon U-Pb geochronology of tuffite beds in the Baishugou Formation:Constraints on the revision of Ectasian System at the southern margin of the North China Craton

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Science China Earth Sciences 2020年第11期63卷 1817-1830页

作者： Xiyan ZHU Shiyan WANG wenbo su Taiping ZHAO Lanyin PANG Mingguo ZHAI Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China Henan Institute of Geological survey Zhengzhou 450001China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

The Xiamaling Formation of 1.4–1.35 Ga in Jixian Section and adjoining areas represents a unique Ectasian Period(Mesoproterozoic)sedimentary sequence in the North China Craton(NCC).Studies carried out during the last decade have contributed significantly in improving our understanding about the Ectasian sedimentation tectonics in the NCC during this transitional interval between the breakup of supercontinent Columbia and the assembly of *** present study reports,for the first time,tuffite beds interlayered with carbonaceous-siliceous slate-phyllite in the upper Baishugou Formation(western Henan Province),at the southern margin of *** LA-MC-ICPMS U-Pb geochronology of zircons from two tuffite samples has yielded almost identical ages of 1330±10 Ma(MSWD=0.43,N=38)and 1332±10 Ma(MSWD=0.90,N=24),that constrain a 1.33 Ga depositional age(Ectasian Period)for the Baishugou Formation.A close similarity in lithological characteristics and their respective superimposed lithostratigraphic relationships of the Baishugou and Xiamaling formations,underline a comparable depositional environment for *** high-precision geochronology data on the Baishugou Formation would stimulate a relook into the Meso-Neoproterozoic chronostratigraphic framework of the NCC,and further research would lead to a comprehensive understanding of the geological evolution of the NCC during Ectasian Period and its correlation with analogous global events.

关键词： Tuffite Baishugou Formation Zircon U-Pb ages Ectasian Period North China Craton(NCC)

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华北及扬子克拉通中元古代年代地层格架厘定及相关问题探讨

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地学前缘 2016年第6期23卷 156-185页

作者：苏文博中国地质大学(北京)地球科学与资源学院北京100083

在系统分析近年华北和扬子克拉通典型地区中元古代（GTS2012,1 780～850 Ma）年代地层学进展基础上,详细厘定了其地层格架。确认华北克拉通中元古代早期地层（约1 780～约1 350 Ma）发育始于豫陕晋交界地区,其后沿＂华北中部造山带＂（T... 详细信息

在系统分析近年华北和扬子克拉通典型地区中元古代（GTS2012,1 780～850 Ma）年代地层学进展基础上,详细厘定了其地层格架。确认华北克拉通中元古代早期地层（约1 780～约1 350 Ma）发育始于豫陕晋交界地区,其后沿＂华北中部造山带＂（TNCO：Trans-North China Orogen）再逐渐扩展到燕山及附近地区,但随后则普遍缺失了中期（约1 350～约1 100 Ma）纪录。其晚期沉积（〈1 100 Ma）见于胶辽徐淮、豫西南及燕山等地区。扬子克拉通的川滇交界地区出露有中元古代早期（约1 750～约1 450Ma）及晚期（〈1 100Ma）地层,中期沉积（约1 400～约1 150 Ma）主要见于神农架地区。华北与扬子两地的地层纪录具有良好的互补性,并有效涵盖了整个GTS2012全球地质年表所建议之＂中元古代＂（1 780～850 Ma）。这一新格架蕴含多方面重要命题：（1）地层学方面。在未来GTS2012中元古界内部＂系＂级单位再划分研究中,中国学者通过在上述两地对应地层序列中识别此间全球大火成岩省LIPs-地幔柱事件的沉积响应,可望从地球系统科学角度全面参与新建议各系底界的＂金钉子＂工作,并做出独特贡献。（2）早期真核生物演化及生物古地理方面。基于当前格架可以确认,山西永济汝阳群北大尖组以Tappania为代表的具刺大型疑源类生物群的时代应约为1650 Ma,为目前全球真核生物遗存最早出现层位,同时不排除华北南缘有可能是此类生物的起源区。结合其时空分布或可进一步推测,至少在约1 650～约1 450 Ma阶段,即哥伦比亚超大陆向罗迪尼亚超大陆过渡阶段,华北克拉通应与印度、澳大利亚、北美、西伯利亚等古陆互为近邻。（3）沉积-大地构造演化方面。中元古代华北及扬子克拉通均表现出＂三段式＂沉积过程,其沉降-隆起区均发生过＂跷跷板＂式转换,包括＂晋宁运动＂在内的关键时间节点均存在较好的对应性,表明该阶段两者很可能处于同一板块构造应力场之内。结合约1.38Ga燕山地区下马岭组含钾质斑脱岩黑色岩系所代表的前陆盆地性质、约1.1Ga以后华北与扬子沉积发展同步性并含Chuaria等宏观藻类,以及华北东部该阶段富含格林维尔期碎屑锆石等特征,推测最晚应于约1.1Ga前后,华北东部可能已与扬子-华夏、锡林浩特-蒙古微地块等相互拼合并形成格林维尔造山带。借此与北美、澳大利亚、波罗的等古陆相链接,共同见证了罗迪尼亚超大陆的最终聚合与初始裂解。

关键词：华北克拉通扬子克拉通中元古代大火成岩省真核生物群宏观藻类超大陆

Identification of Lightning Stroke and Fault in the Travelling Wave Protection

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Journal of Electromagnetic Analysis and Applications 2009年第1期1卷 31-35页

作者： Guibin Zou Houlei Gao wenbo su Dapeng Wang EPRI Shandong Electric Power Corporation China School of Electrical Engineering Shandong University

To resolve the impact of transient high frequency signals induced by lightning stroke on the travelling wave protection of transmission line, a novel identification algorithm is proposed. Using the characteristics of symmetric current wave-form induced by lightning stroke without causing fault and that of asymmetric current waveform generated by fault within a very short time interval, the waveform of transient current above and below time-axes are integrated respec-tively. First, through comparing the relative ratio of them with threshold value, the primary criterion identifying fault and lightning stroke is constructed;Secondly, to improve the reliability of discrimination between lightning stroke with and without causing fault, according to the difference of them, the secondary criterion is also defined. The simulation results and analysis demonstrate that the proposed integral criterions are valid and correct.

关键词： Transmission Line Travelling Wave Based Protection Lightning Stroke Characteristic of Waveform Cri-terion

EDGE-DIRECTED INTERPOLATION BASED ON SHIFTED-LINEAR IMAGE MODEL

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Journal of Electronics(China) 2006年第3期23卷 389-393页

作者： Du Huiqian Mei wenbo su Guangchuan Department of Electronic Engineering Beo＇ing Institute of Technology Beijing 100081 China

This paper presents a hybrid image interpolation algorithm to keep details and edges simultaneously. The basic idea is to separate the unknown pixels into two classes and estimate them in different way. One class of unknown pixels is obtained via shifted linear interpolation and the other class through statistical signal processing method. The merit of this hybrid algorithm is that each unknown pixel can be estimated through original pixels simultaneously. Simulation results demonstrate that this hybrid interpolation algorithm improves the quality of the interpolated images over conventional interpolation methods.

关键词： Image interpolation Shifted-linear Statistical signal processing

高分辨雷达/红外成像复合系统的空间配准方法

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红外与激光工程 2011年第6期40卷 1181-1186页

作者：亓琳史泽林苏文博中国科学院沈阳自动化研究所辽宁沈阳110016 中国科学院研究生院北京100039 中国科学院光电信息处理重点实验室辽宁沈阳110016 辽宁省图像理解与视觉计算重点实验室辽宁沈阳110016

为实现高分辨雷达/红外成像复合制导系统的空间配准,首先提出了一种基于无偏转换测量的精确极大似然坐标变换法来完成由球坐标系到笛卡尔坐标系的坐标转换,然后提出了一种通过标定雷达和红外相机实现空间配准的方法。为提高空间配准的精... 详细信息

为实现高分辨雷达/红外成像复合制导系统的空间配准,首先提出了一种基于无偏转换测量的精确极大似然坐标变换法来完成由球坐标系到笛卡尔坐标系的坐标转换,然后提出了一种通过标定雷达和红外相机实现空间配准的方法。为提高空间配准的精度,用提出的坐标变换法估计目标在笛卡尔坐标系下的真实位置,在红外图像处理中提出了一种多灰度细分质心算法来求取图像中目标的精确位置。实验结果表明:该方法配准精度高,满足系统的精度要求。所提出的空间配准方法不仅适用于高分辨雷达/红外成像复合制导系统,还为其他异类传感器复合系统的空间配准提供了一种方法。

关键词：数据融合空间配准极大似然估计无偏转换测量