应变测量系统误差分析

电阻应变式传感器在实际工程中应用较广。介绍影响电阻应变式传感器精度的一些因素,并对其在实际应用中可能出现的问题进行全面细致的分析。分析电测试验中应变片粘贴质量、非线性及导线长度、温度、不同组桥方式对测试结果所产生的影响,修正了导线电阻引起的误差,大大提高了测量精度,得出了应变电测试试验中减小误差的方法。     

Transition‐Metal‐Free Magnesium‐Based Batteries Activated by Anionic Insertion into Fluorinated Graphene Nanosheets

Considering resource abundance, high volumetric energy density, and safer anodic electroplating, the Mg‐based battery is thought to be one of the most promising systems beyond current Li‐ion batteries. However, the development of Mg batteries is hindered by the narrow electrochemical window of electrolytes as well as by inapplicable cathode frameworks. In this work, it is proposed, for the first time, to utilize a fast surface redox process to replace sluggish lattice migration for improving the kinetics of Mg batteries. Taking fluorinated graphene nanosheets (FGSs) as model material, a reversible capacity higher than 100 mAh g^?1 is achieved in a pseudocapacitance behavior from 2.75 to 0.5 V. Different from traditional storage mechanisms, this proof‐of‐concept Mg/FGS system is activated by a prior anionic process followed by reversible cationic storage. The dilution of charge density by forming large‐sized monovalent complex cations and the easy access to surface redox sites are responsible for the negligible voltage polarization without an evident MgF₂ nucleation phenomenon.     

汽车线束图纸的自动识别方法

结合我国汽车行业的生产现状,研究、讨论了一种计算机自动识别汽车线柬图纸的方法。该方法通过计算机软件仿真试验,在符合某一预先设定好的识图规则的情况下,根据编制好的程序对图纸中线束进行判断,筛选出需要的线束和线束段,将其按类合并,最终达到自动完成线束长度和线束分类识别的目的。这种新的识别方法较传统的人工读图,分段计算,相加求和的方法有了很大的创新,极大地提高了我国汽车行业的生产效率,减少了人员操作的错误率,为企业生产带来直接利益。     

自动检测系统在荧光灯绷丝机中的设计与应用

应用电气自动检测技术改进荧光灯绷丝机，完善工艺，节约成本，提高生产合格率。     

Effects of dopant,temperature, and strain rate on the mechanical properties of micrometer gold-bonding wire

An experimental study on the thermomechanical properties of microelectronic gold-bonding wires was conducted using high-precision, microforce tensile tests. The load-displacement behavior of three types of gold wire (GL-2 type, FA type, and SR type) was carefully recorded for determining the elastic modulus and stress-strain curves. Tests were conducted with miniature specimens at temperatures ranging from room temperature to 250°C and load rates on the order of 1 mm/min and 10 mm/min. The testing results indicated that the tensile strength of all three types of wire decreased with temperature, especially the SR type. The load strain rate has a significant effect on the SR type but little effect on the GL-2 and FA wires. The stress-strain curves from these tests were analyzed to fit into empirical constitutive models that account for the strain, temperature, and strain-rate effects.     

钢丝镀层重量表示方法的理论研究

讨论钢丝镀层重量３种表示方法之间的关系，并导出镀层厚度的近似计算公式。     

铜包钢线导电性物理模型及镀层厚度计算

建立了铜包钢线及镀锡铜包钢线导电特性的物理模型，给出了电镀工艺和引镀机设计中计算铜包钢线及镀锡铜包钢线基本参数的方法，并用一组实验数据进行验算，结果证明理论计算和实验结果具有很好的一致性。     

钢丝水浴热处理工艺

用聚丙烯酸钠水溶液作为介质，控制钢丝加热后的冷却速度，可获得利于拉拔的组织。与铅浴热处理进行了对比分析，指出水浴热处理的优点。     

针布钢丝球化退火脱碳分析

从理论和实践出发，分析针布钢丝在球化退火过程中脱碳层的形成原因，并结合实践过程中总结的经验，提出针布钢丝球化退火处理时防止氧化脱碳的具体方法和措施。     

几种拉丝的直接水冷方法

介绍几种拉丝的直接水冷方法。采用直接水冷可以提高拉丝模的寿命，减少拉拔道次，增大部分压缩率，提高拉丝速度，使钢丝获得良好的综合力学性能。