高职高专《机械制造工艺基础》课程教学方法的探讨

结合《机械制造工艺基础》的实际课程特点、教学对象和培养目标，分析了该课程存在的问题，并介绍了几种有效的教学方法，旨在提高该课程的教学质量，推动该课程的教学改革。     

导电高分子复合材料的研制

本文在常用制备导电高分子复合材料的原材料配方的基础上 ,加入新型抗氧化剂 A、消泡剂 B,目的是在保持导电高分子复合材料力学性能的基础上 ,显著提高其导电性能 ,满足实践需要。本次实验证明当金属填料含量达到某一最佳比例时 ,其力学性能和电学性能均能达到预期目的     

论民间美术中瓜果图案的形式与内涵

在我国民间美术中，“吉祥”作为广大人民群众表现的主题，其内容常以图案的形式加以表现。在洋洋大观的吉祥图案中，瓜与果的反复出现正是这种程式化审美的典型体现，而瓜果所代表的多是生命的繁衍、福寿、如意的吉祥含意，此类形象鲜明地反映着中国传统文化丰富的内涵。本文通过对传统吉祥图案中常见的瓜与果的形式与内涵的构成的分析，使人们在了解民间关术生动意趣的同时，思考在现代设计中如何充分发掘、运用这笔祖先留给我们的巨大财富，从而使传统吉祥图案和现代设计达到形式、蕴涵上的完美融合。     

Highly mechanical and high-temperature properties of Cu–Cu joints using citrate-coated nanosized Ag paste in air

Today, a growing number of third-generation semiconductor-based power devices are used in products that can continuously operate at high temperatures for extended periods of time. Hence, traditional tin-lead and lead-free solders are no longer suitable for modern electronic packaging. A common method is to apply Ag paste for bare Cu–Cu joints under an inert or reductive atmosphere. In this study, the citrate-coated nanosized Ag paste was utilized to generate robust bare Cu–Cu joints under atmospheric conditions. The average size of citrate-coated Ag particles was approximately 4.76 ?nm after being cleaned by deionized water and acetone. The effects of process parameters, such as cleaning, joining temperature, holding time, and joining pressure, on the mechanical properties of the bare Cu–Cu joints were thoroughly investigated. Increasing washing and joining temperatures resulted in a shear strength increase of up to 28.2 ?MPa ?at a joining temperature of 260 ?°C after seven washes. In addition, a holding time of 30 ?min and a joining pressure of 1 ?MPa were selected as optimal process conditions for the application of citrate-coated nanosized Ag paste onto bare Cu–Cu joints. The newly developed Cu–Cu joints showed excellent thermal stability at 150 ?°C using the citrate-coated nanosized Ag paste. After long-term aging, the joints exhibited stability at 250 ?°C for 144 ?h, indicating a good high-temperature reliability for three-dimensional integrated circuits (3D ICs) fabricated under atmospheric conditions.     

A new quantitative relation between deformation texturesand corresponding mechanical properties of FCC metals

Quantitative analysis of deformation-induced textures and texture-induced mechanical properties is an important issue for optimal design and control of plastic forming of metals.Deformation-induced textures were predicted through the crystal plasticity finite-element method(CPFEM)in this study,and varying deformation modes,including uniaxial compression,uniaxial tension,simple shear,and plane-strain compression,were considered.The predicted textures were proven by experiments.Then,a theoretical model was proposed to build the quantitative relation between textures and the corresponding mechanical properties.This model takes into account the effects of grain’s orientation,grain’s interaction,and the property in the level of single grain.It captures the macroscopic anisotropy owing to textures and microscopic anisotropy owing to crystallographic structures.By applying this model,the macroscopic stress responses of grains’aggregate with varying textures were calculated according to grain’s orientations and the intrinsic properties of the single crystal along[100]and[111]crystallographic directions.The theoretical model is proven to have high efficiency and acceptable accuracy in the prediction of texture-induced mechanical properties comparing with CPFEM model.     

磁场处理纸浆料提高纸张机械强度的中间试验

报告了中间试验的结果。用磁场处理纸浆料装置对流动的纸浆料作处理,可以提高纸张的机械强度10 % ～15 % 。     

浅析Solidworks软件在机械制图教学中的辅助应用

从机械制图教学特点和传统教学缺点出发,结合Solidworks软件的特点,介绍Solidworks软件在表面交线、组合体视图、尺寸注法、剖视图和装配图中辅助教学的优点。     

提高《机械创新设计》课程教学效果的尝试与探索

创新能力是一个国家综合国力中的核心竞争力。高等学校是建立国家创新体系的支柱和基础,但目前我国的高等教育对创新能力的培养是非常薄弱的,这在很大程度上阻碍了创新人才的培养。本文结合《机械创新设计》课程的教学体会,从如何提高学生学习兴趣、怎样提高教学效果等方面进行了一系列有益的尝试,旨在探索一条符合当代大学生特点的完善的创新教学模式,以培养出更多更好的具有较高创新素质的人才。     

钨—铜系纳米材料研究

通过Ｘ射线衍射（ＸＲＤ）和航向电镜分析（ＴＥＭ）等手段，研究了钨－铜（不互溶合金）系在机械合金化过程中的固溶合金化和纳米化行为。结果发现，铜固溶在钨中，并形成了转换固溶体。     

主蒸汽管道两种弯头材料的主要力学性能及蠕变损伤劣化情况的试验研究

通过试验研究，阐述了火力发电厂主蒸汽管道中两种常用弯头材料的试验数据，由这些数据分别得出了各种力学参数的计算公式，对火电厂的工程技术人员和从事设计、科研的技术人员都有十分重要的参考价值