发明人： 苏醒，于泓，邹美帅，李晓东，邓子童，张伟，马腾龙

申请人： 北京理工大学

申请号： 202410407044.X

申请日期： 2024.04.07

摘要： 本发明涉及一种耐高温、超拉伸、自修复聚氨酯弹性体及其制备方法，属于生物医疗技术领域，其能够在高温环境下维持原状，具有很高的拉伸率，能在常温下进行材料的自修复。该材料拉伸性能优良，可以被拉伸到原长的40倍以上。该材料可以在室温温和条件下，空气中和水下实现高效自修复，其拉伸强度可以恢复初始的90％。此外 ...

发明人： 张伟，毛雪瑞

申请人： 北京理工大学

申请号： 202410191027.7

申请日期： 2024.02.21

摘要： 本发明公开了一种多源船舶遥感图像解译的视觉大语言模型构建方法，属于遥感与计算机视觉交叉技术领域，包括：在海上遥感图像场景下，基于视觉大语言模型实现视觉特征和语言特征融合，从冻结的LLaMA作为起点，然后通过优化LoRA中的四个较小矩阵进行微调以加强视觉和语言之间的对齐和交互理解，构建知识迁移框架以适 ...

发明人： 张伟，蔡妙鑫，毛雪瑞

申请人： 北京理工大学

申请号： 202410234112.7

申请日期： 2024.03.01

摘要： 本发明公开了一种实现多传感器遥感图像解译的多模态大语言模型，包括：视觉增强模块，用于提取和融合遥感图像中的粗粒度语义感知信息和细粒度细节感知信息；跨模态交互理解模块，用于进行视觉信息和语义感知信息的融合，增强视觉感知和语言理解之间的相互作用和理解；统一指令微调模块，用于增强模型在下游任务中遵循指令的 ...

作者： Zhang, Wei^{1, 4}; Xiao, Kailu²; Hu, Dongmei³; Huang, Chenguang⁵; Wu, Xianqian¹ （¹Institute of Mechanics, Chinese Academy of Sciences, Beijing; 100190, China;²Department of Materials Science & Engineering, Texas A&M University, Central Texas, College Station; TX; 77840, United States;³Key Laboratory of Multifunctional and Smart Systems, Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou; 215123, China;⁴State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing; 100081, China;⁵Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei; 230031, China）

出处： SSRN 2024

作者： Liu, Rui¹;Zhang, Wei¹;Wang, Kunyu¹;Chen, Pengwan¹;Ge, Chao¹;Wang, Haifu¹ （¹Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China.）

出处： JOURNAL OF APPLIED PHYSICS 2024 Vol.135 No.13

关键词： EQUATION-OF-STATE; POROUS MATERIALS; MECHANICAL-PROPERTIES

摘要： The influence of microstructure on the response of energetic structural materials (ESMs) under shock conditions remains inadequately quantified, and t ...

作者： Jin, S.¹;Zhang, W.¹;Guo, Z.¹;Yuan, Y.¹;Shi, Z.¹;Yan, J.¹ （¹Beijing Inst Technol, Sch Mech Engn, Beijing, Peoples R China.）

出处： FLUID DYNAMICS 2024

关键词： MICRO-EXPLOSION; LIQUID-FILM; SINGLE; IMPINGEMENT; COMBUSTION; DYNAMICS; BEHAVIOR; POOL

摘要： The phenomena of droplet impact on the heated liquid surface are difficult to unify due to complexity of the interaction, but this process has signifi ...

作者： Jin, S.¹;Zhang, W.¹;Guo, Z.¹;Yuan, Y.¹;Shi, Z.¹;Liu, Y.²;Yan, J.¹ （¹Beijing Inst Technol, Sch Mech Engn, Beijing, Peoples R China.;²China Univ Min & Technol Beijing, Sch Mech Elect Informat Engn, Beijing, Peoples R China.）

出处： FLUID DYNAMICS 2024 Vol.59 No.3 P594-611

关键词： SPRAY IMPINGEMENT; SINGLE-DROP; BREAKUP; SOLIDIFICATION; DEFORMATION; MODEL

摘要： The impact of liquid droplets on the ultracold surface affects significantly the cold start performance of internal combustion engines but the splash ...

作者： Zhang, Wei¹;Li, Gengchen¹;Su, Hao²;Sun, Peng⁵;Dai, Wenbo^3,4;Shi, Jianbing¹;Tong, Bin¹;Cai, Zhengxu¹;Dong, Yuping¹ （¹Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Construct Tailorable Adv Funct Mat, Beijing 100081, Peoples R China.;²Univ Sci & Technol China, Hefei Natl Lab, Hefei 230088, Peoples R China.;³Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Zhejiang, Peoples R China.;⁴Wenzhou Univ, Key Lab Biohlth Mat & Chem Wenzhou, Wenzhou 325035, Zhejiang, Peoples R China.;⁵Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China.）

出处： CHINESE JOURNAL OF ORGANIC CHEMISTRY 2024 Vol.44 No.8 P2523-2529

关键词： HYPOXIA; SENSORS; DESIGN

摘要： Quantitative oxygen detection, especially at low concentrations, holds significant importance in the realms of biology, complex environments, and chem ...

作者： Wei Zhang^1,2;Kailu Xiao³;CA1;Dongmei Hu⁴;CA2;Chenguang Huang⁵;Xianqian Wu¹;CA3 （¹Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China;²State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China;³Department of Materials Science & Engineering, Texas A&M University, College Station, TX, 77840, USA;⁴Key Laboratory of Multifunctional and Smart Systems, Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China;⁵Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China）

出处： Materials Today Advances 2024 Vol.24 P100528

关键词： Carbon nanotube films;Impact resistance;Size effect;Energy dissipation mechanisms;Failure mode

摘要： Dynamic mechanical behavior and size-related impact resistance of CNT films are studied by employing laser-induced projectile impact test (LIPIT) and ...

作者： 张伟^1,2;，刘辉²;，刘金刚¹;，严鹏飞³;，傅兵¹; （¹湘潭大学机械工程与力学学院；²北京理工大学车辆传动国防重点实验室；³中北大学机械工程学院）

出处： 机械工程学报 2024 第60卷 第13期 P354-365

关键词： 机电复合传动；混合动力；扭振补偿；振动抑制；自适应控制

摘要： 机电复合传动系统因具有功率密度大、调速范围广的特点得以在重型特种车辆上应用。然而，作为主要动力源的发动机，其曲轴扭矩剧烈波动引发系统扭振，影响行驶平稳性和使用寿命，传统机械减振装置减振特性无法实时调整，减振效果受限。研究了一种基于电机转矩自适应补偿的车用机电复合传动系统扭振减振方法，该方法通过重构扰 ...