玻璃纤维对水泥石强化效应的焦散线实验研究(英文)

采用反射式焦散线方法对水泥石中添加玻璃纤维后的强度变化问题进行了实验研究.首先,制作了不添加与添加玻璃纤维的2种水泥石试件,并采用镜面移植方法在试件的表面进行反射镜面的制作与加工.然后,采用多火花式高速摄影系统对试件在冲击断裂过程中的裂纹扩展和裂纹尖端焦散线的情景进行记录.最后,对2种试件的裂纹起裂时间、动态应力强度因子和裂纹扩展速度等参数进行计算和对比分析.分析发现,玻璃纤维提高了水泥石的断裂韧度、延迟了裂纹的起裂时间,对水泥石具有明显的强化效应.实验结果对研究水泥石的断裂力学属性特征具有一定意义.     

Y对Fe-Si-B非晶合金的微观结构的影响

采用Lorentzian法和非晶计算理论,分析少量稀土Y取代Fe对Fe78 Si9 B13非晶合金微观结构的影响,从微观结构变化的角度对合金非晶形成能力及热稳定性的变化做出相应解释。结果表明：随着Y含量的增加,合金的第一近邻半径逐渐增大,原子排布有序度降低,非晶漫散射峰的半高宽增大;非晶合金的配位数和堆垛密度均随着Y含量的增加先增大后减小,分别从短程序和中程序的角度反映出原子密排程度随Y含量的增加先增后减,这与合金非晶形成能力和稳定性的变化趋势相一致。     

硼铝硅玻璃析晶及对耐火物融蚀机理研究

结石和气泡都是影响硼铝硅玻璃产品合格率的重要因素,有时甚至会成为制约生产的主要因素,尤其是液晶基板玻璃生产,因其对产品中存在缺陷要求极严,甚至目视无法观察到的极其微小的夹杂物都是不容许的.解决玻璃制品中发生气泡和结石的问题,历来都是玻璃生产和工艺研究中的重要课题,有非常显著的经济效益.本文试图通过对该玻璃的析晶及其对耐火物融蚀机理的研究,了解结石形成原因和发生源.研究减少结石的可能,从而达到提高产品质量和合格率的目的.     

The Gallant Ghost of Handball

Amy Morris Homans was a great champion for women’s pursuit of leadership in physical education and sport. In honor of her legacy, the purpose of this article is to: (a) discuss some defining leadership characteristics of Amy Morris Homans; (b) examine leadership issues related to gender; (c) examine leadership issues related to kinesiology; and (d) delineate ways to overcome leadership obstacles related to both gender and kinesiology. In true Amy Morris Homans fashion, I draw from multiple perspectives to discuss these topics. I hope that this discussion at the congress challenges scholars to increase their awareness of the glass obstacles that confront our field, and design research studies on gender- and kinesiology-specific leadership challenges that will shatter those obstacles once and for all. If a new generation of women and men who champion women’s pursuit of and longevity in leadership roles is inspired, this lecture has been a success.     

平板玻璃输送辊道加速分离控制算法探引

论述了平板玻璃冷端传输加速分离辊道的动态过程,寻找加速分离启停规律,最大化地简约人机互动参数,从而在软件控制环节运用有效的算法,实现人机之间的简洁互动,并提高控制系统的效率。     

佛山陶瓷产业转移现状的探讨

佛山陶瓷历经20多年的快速发展,形成了一个配套完整的产业集群,成为了全国最大的陶瓷产业区。进入本世纪后,佛山陶瓷产业在经济全球化发展及政府节能减排的推动下,正在经历大变革、大调整,大批佛山陶瓷企业开始向外扩张、转移、再次布局设点。本文就佛山陶瓷产业转移的现状,探讨了佛山陶瓷产业转移的成因,以及将来佛山陶瓷产业发展的方向。     

城市规划中的井盖多样化及井盖出现的病害

当今城市建设中,井盖的多样化也随着社会的发展而增加。同时井盖的报废和破损率也日益增加,井盖的病害原因很多,井盖的分类多样化也更加复杂以及井盖材料包括新型材料的出现日益繁多。本文将从当今井盖出现病害现象和井盖的多样化进行说明。     

Na／Ca比对粉煤灰微晶玻璃显微硬度的影响

以粉煤灰为主要原材料,采用熔融一烧结法制备了不同Na／Ca比的微晶玻璃材料。用差示扫描量热分析方法分析了基础玻璃的热性质并制定了微晶玻璃的烧结制度。用X射线衍射分析了微晶玻璃样品的晶相组成,用光学显微镜分析了样品的组织形貌,测试了微晶玻璃的显微硬度,并讨论了不同Na／Ca比对粉煤灰微晶玻璃的晶相组成、形貌及性能的影响。结果表明随着Na／Ca比的减小,样品显微硬度值呈上升趋势。     

Low temperature sintering and performance of aluminum nitride/borosilicate glass

Aluminum nitride （AlN）/borosilicate glass composites were prepared by the tape casting process and hot-press sintered at 950 ℃ with AIN and SiO2-B203-ZnO-Al2O3-Li2O glass as starting materials. We characterized and analyzed the variation of the microstructure, bulk density, porosity, dielectric constant, thermal conductivity and thermal expansion coefficient （TEC） of the ceramic samples as a function of AIN content. Results show that AIN and SiO2-B2O3-ZnO-Al2O3-Li2O glass can be sintered at 950 ℃, and ZnAI204 and Zn2SiO4 phase precipitated to form glass-ceramic. The performance of the ceramic samples was determined by the composition and bulk density of the composites. Lower AlN content was found redounding to liquid phase sintering, and higher bulk density of composites can be accordingly obtained. With the increase of porosity, corresponding decreases were located in the dielectric constant, thermal conductivity and TEC of the ceramic samples. When the mass fraction of AlN was 40%, the ceramic samples possessed a low dielectric constant （4.5-5.0）, high thermal conductivity （11.6 W/（m.K）） and a proper TEC （3.0× 10^-6 K^-1 which matched that of silicon）. The excellent performance makes this kind of low temperature co-fired ceramic a promising candidate for application in the micro-electronics packaging industry.     

硅藻土沥青及沥青混合料低温抗裂机理(英文)

对一种基质沥青和3种硅藻土沥青进行了差示热扫描分析,并结合相应的混合料约束试件的温度应力试验分析了硅藻土沥青的低温抗裂机理.结果表明:硅藻土沥青有优于基质沥青的低温性能;玻璃态转化温度可以较好地反映硅藻土沥青的低温性能;玻璃态转化温度与破断温度有较高的相关性.另外还进行了相应的4种沥青混合料的低温弯曲试验、低温压缩试验和收缩系数试验.结果表明:硅藻土沥青混合料的低温性能优于基质沥青混合料;硅藻土沥青混合料临界弯曲应变能密度及压缩应变能密度均大于基质沥青混合料;沥青混合料加入硅藻土后收缩系数降低.在此基础上,从混合料收缩性能和破坏能量2个角度分析了硅藻土沥青混合料的低温抗裂机理.