Structural health management technologies for inflatable/deployable structures: Integrating sensing and self-healing

Inflatable/deployable structures are under consideration as habitats for future Lunar surface science operations. The use of non-traditional structural materials combined with the need to maintain a safe working environment for extended periods in a harsh environment has led to the consideration of an integrated structural health management system for future habitats, to ensure their integrity. This article describes recent efforts to develop prototype sensing technologies and new self-healing materials that address the unique requirements of habitats comprised mainly of soft goods. A new approach to detecting impact damage is discussed, using addressable flexible capacitive sensing elements and thin film electronics in a matrixed array. Also, the use of passive wireless sensor tags for distributed sensing is discussed, wherein the need for on-board power through batteries or hardwired interconnects is eliminated. Finally, the development of a novel, microencapuslated self-healing elastomer with applications for inflatable/deployable habitats is reviewed.     

赴美国、加拿大考察报告

介绍了赴美国国家标准与技术研究院。加拿大国家研究院等单位对化学计量进行考察的情况，浅谈了几点体会。     

Optimized Fuzzy Clustering Method for Health Monitoring of Shield Tunnels

Since health monitoring of shield tunnels generally employs multiple sensors belonging to different types,a fine analysis on massive monitoring data,as well as further quantitative health grading,is really challenging.An optimized fuzzy clustering analysis method based on the fuzzy equivalence relation is proposed for health monitoring of shield tunnels.Clustering results are auto-generated by using fuzzy similarity-valued map.The results follow the idea of unsupervised classification.Moreover,a convenient new health index HI is proposed for a fast tunnel-health grading.A case study on Nanjing Yangtze River Tunnel is presented to validate this method.Three types of indicators,namely soil pressure,pore water pressure and steel strain,are used to develop the clustering model.The clustering results are verified by analyzing the engineering geological conditions;the validity and the efficacy of the proposed method are also demonstrated.Further,the fuzzy clustering analysis also represents a potential for identifying abnormal monitoring data.This investigation indicates the fuzzy clustering analysis method is capable of characterizing the fuzziness of tunnel health,and beneficial to clarify the tunnel health evaluation uncertainties.     

论文献生产

本文主要从经济学、社会学和角度讨论文献的生产，认为一次文献生产只有相对的“不确定性”，没有绝对的“不确定性”；文献生产分为两个阶段，其中第一阶段具有决定性意义。在此认识基础上，文章还分析了文献生产的劳动消耗和劳动对象的特点、性质。     

CAI课件的创作策略与使用体会

本文结合自己开发和使用《微机应用基础》多媒体教学课件实践过程，简单阐述了几点CAI课件创作的一般策略和使用体会。     

C-400地空导弹武器系统性能分析与比较

C-400即将进入战斗值班形成战斗力,它是未来俄罗斯防空导弹体系中的中远程部分.由于俄对其长期保密,外界对它的了解甚少.综合国内外资料对其多个分系统进行了性能初步分析,并与"爱国者"地空导弹武器系统等进行了对比.     

实施零缺陷管理,振兴航空制造业

根据振兴航空工业的需要,提出了用零缺陷管理振兴航空制造业的思路和方法.     

运载火箭平台惯导系统杆臂效应对入轨精度的影响

针对运载火箭平台惯导系统杆臂效应对入轨精度的影响进行了研究和分析，并给出了仿真结果。     

二维计算机图象检测系统

目前,利用机器视觉系统监测生产过程和进行质量控制是一个非常活跃的研究领域。当把视觉系统用于几何量测量时,必须解决其硬件的分辨力极限所带来的问题:测量精度高意味着测量范围小,或者,测量范围大意味着测量精度低。提出了解决上述问题的方法:一个由步进电机驱动的XY工作台与图象处理系统相结合。产生出一个多坐标系统结构。测量参数在两个坐标系之间传送,并在100mm×100mm范围内,在X和Y两个方向,达到的测量精度为0.02mm。     

一种新型恒温—温补晶体振荡器

提出了一种ＯＣＸＯ的恒温控制方法。该方法是利用乙醇的沸点制成换态式恒温箱。这种温度控制方法既可以用作中准确度的ＯＣＸＯ，又可以作为精密双层控温ＯＣＸＯ的外层恒温装置，还可以与简单的温补线路结合，构成高准确度的ＯＴＣＸＯ。