计算机技术在材料设计课程中的应用探讨

利用计算机技术对《材料设计》课程的教学内容、方法和手段进行改革，将课件教学和数码教室应用于教学活动中来，使教学重点由讲授知识向培养学生的创造创新能力转移，有效地调动了学生学习的兴趣和热情，提高了学生独立解决问题分析问题的能力。     

Surface Treatment of UHMWPE Fibers for Adhesion Promotion in Epoxy Polymers

Surface of Ultra-high molecular weight polyethylene （UHMWPE） fiber were treated by chromic acid chemical etching, pyrrole chemical vapour phase deposition and the complex of these two methods, respectively. The change of surface properties and structure of fibers were discussed by Fiour Transform Infrared Spectroscope （FTIR）, Dynamic Mechanical Analysis （DMA） and Scanning Electron Microscope （SEM）. The results show that some new oxygenous groups could be found on surface of UHMWPE fiber after chromic acid chemical etching, which enhanced intemolecular interaction with polypyrrcle. The adhesion of the fiber and resin natrix increased after pyrrole chemical vapour deposition. When chromic acid etching combined with pyrrole chemical vapor deposition, the treated fiber not only has the same properties as original fiber bat also outstanding adhesion to epoxy resin matrix, and its composites have better mechanic properties shear strength）, resulting from intemolecular interaction treated fiber and polypyrrole.     

改进时间管理机制的分布式仿真体系结构

在现有分布式仿真应用中,基本上没有使用HLA中的时间管理服务.其根本原因是HLA中逻辑时间的本质是具有语义的仿真时间,这给分布式仿真带来了性能减低、互操作性差等问题.为了解决这些问题,引入了与语义分离的固果时间的概念,用于确定消息间的固果关系,并为分布式仿真构建新的体系结构(称为Multi-Layer Architecture,MLA),其中的支撑平台是消息传输支撑平台(Message Transport Infrastructre,MTI).在MLA中,因果时间封装在MTI中,相对于联盟完全透明;而位于联盟中的仿真时间是一个整体,在联盟构建过程中决定采用哪种仿真时间管理策略.基于因果时间与仿真时间的分离,MLA能够对仿真数据进行多层封装和拆封,完全更新了联盟执行过程.MLA不仅有利于提高仿真应用的并行,还能够增加仿真模型的可重用性和互操作,而且可以使模型与不断进化的标准相适应.     

闸瓦铸造自动线射流控制系统的改进

在毛主席“鞍钢宪法”的指引下,兰州铁路配件厂闸瓦铸造自动线于73年建成并投入试生产。该自动线控制系统采用了射流控制。通过半年多试生产发现射流控制系流故障较多,影响自动线正常运行。74年我们通过射流短训班并与兰大同志一起对该控制系统作了改进,运行三年多来效果良好,提高了运转的稳定性和劳动生产率。 一、射流控制线路在设计方面的改进 全自动线有六个射流控制台,分别控制全线九台机械设备,如图1所示。     

电子战装备仿真试验系统数据传输的实现方案

针对电子战装备仿真试验的具体要求，分析了系统的结构，组成及特点，提出了解决系统数据传输的实现方案，并对方案中遇到的一些关键技术问题进行了阐述。     

Structure and Properties of Polyurethane/Polyvinylidene Difluoride Blending Hollow Fiber

IntroductionMembrane with the property of pressure-responsibili-ty ,PR,is one kind of membranes , and the pores of thismembrane can be changed reversibly with pressure in a se-paration system. This thus provides the membrane with agreat deal of advantages . For example ,the first is that thePR membranes can separate different masses by varyingpressures relating to its varying pore sizes ,and the secondis the regeneration of a fouled PR membrane easily becausethe pores could be enlargedin cle…     

Effects of Phenolic Antioxidants on Ultra - high Molecular Weight Poly-ethylene/Decalin Solution

The degradation of ultra - high molecular weight polyethylene (UHMW- PE) during its dissolution into deca-lin is discussed. Also is discussed the stabilization of thesolution by three phenolic antioxidants, octadecyl β - (3, 5 - di - tert - butyl - 4 - hydroxyphenyl) propionate(1076), tetrakis[methylene β-(3,5-di-t-butyl-4- hydroxyphenyl) - propionate] methane(1010), 1,1,3-tris(2-methyl- 4- hydroxy- 5- tert-butylphe-nyl)butane (CA), and an auxiliary antioxidant.dilauryl-thio- dipropionate(DLTP). Among the three phenolic antioxidants, the effect of 1076 is the greatest) and the auxiliary antioxidant is effective in the stabilizing the solution when combined with one of the three phenolic antioxidants.