支持专业知识获取的中间件的研究

 分析了如何利用中间件技术支持专业知识获取的问题．提出了基于XML，SOAP，UDDI和WSDL的web服务技术的专业知识获取的中间件应用模式，它可以有效解决消息传送、服务功能的抽象描述以及服务在网络上的发布与发现等问题。以固定瓦推力滑动轴承的性能参数计算Web服务为实例，指出web服务是分布式设计知识获取和知识资源集成的有效途径．     

连轧管机轧辊轴承的调整、维护及保养

本文介绍了应用于MPM连轧机轧辊上的四列圆锥滚子轴承的结构特性及其调整、维护、保养，旨在提高轴承的使用寿命。     

非金属夹杂物对硬线盘条拉拔性能的影响及其工艺控制

分析了非金属夹杂物对硬线盘条拉拔性能的影响及其来源 ,通过考察分析冶炼、浇注生产工艺针对非金属夹杂物含量的影响 ,提出了避免或减少非金属夹杂物含量的工艺控制方法。     

聚脲基脂及其在电机轴承上的应用

对电机轴承专用聚脲基脂的特点及其在电机轴承上的应用效果进行了分析和探讨。正确使用电机用润滑脂是保证电机正常工作，减少电机故障的关键措施之一。采用电机专用聚脲基脂后，电机轴承工作温度明显下降，电机故障率明显减少。     

海底管道的沉降量计算

根据极限平衡和极限分析方法,建立了软黏土地基土体上海底管道的极限承载力计算公式。当地基处于极限状态时,基础作用于地基的全部荷载应该等于该地基土体的承载能力,根据这一关系式可以推导出海底管道沉降量的计算公式。通过对试验结果的分析,证实所采用的计算方法是可行的。     

福州洪山大桥支座整体更换施工的方法和措施

本文针对国道316线福州洪山大桥支座整体更换工作中所采用的主要施工方法和措施进行介绍,对类似桥梁的养护工作具有指导意义。     

Frequency response function of magnetic bearings using high-temperature superconductor

A high-temperature superconductor YBa₂Cu₃O_7-x with strong pinning force has allowed stable magnetic suspension with no control to be developed. Two types of superconducting magnetic bearings (SMB) using YBCO and permanent magnet were assembled. The two types are radial and axial. The dynamic stiffness of each SMB as it was cooled down under a magnetic field by liquid nitrogen was measured both radially and axially. As a result, it was found that the spring constants of these SMBs were almost as large as a practically desirable value; however, their damping coefficients were lower than the practical level. These findings are useful as one of the data bases for development of an optimum SMB design to support the weight of rotors in an axial direction.     

An examination of the effect of composite constituent properties on the notched-strength performance of composite materials

The effect of matrix and fiber properties on the strengths and failure processes of notched, continuous-fiber composite specimens has been investigated. Bearing, open and filled hole tension and compression tests were conducted on AS-4/3501-6, IM-8/3501-6, AS-4/APC-2 and IM-8/APC-2 specimens. Failure characteristics of tested specimens were studied by fractographic techniques. Failure progression was tracked by means of incremental loading, radiography and fractographic inspection.     

高应力水平下滚动轴承疲劳寿命试验研究

通过在三种不同的强化负荷下进行深沟球轴承疲劳寿命试验，并与常规试验一组结果对比。结果表明，适当地加大滚动轴承疲劳寿命试验负荷，可以大大缩短试验时间，而疲劳寿命依然服从Ｗｅｉｂｕｌ分布，且与常规试验结果基本一致，同时疲劳破坏的形式仍是表面下萌生裂纹，然后扩展至表面形成剥落。