论文标题
一种评估金属箔的弹性模量的新方法
A new approach to evaluate the elastic modulus of metallic foils
论文作者
论文摘要
对于金属箔而言，弹性特性的准确确定是不平凡的。在文献中通常将测得的弹性模量描述为明显小于散装对应物的各个模量。本文介绍了一种直接的方法，可以使用标准的拉伸测试设备与激光斑点扩展计和高级数据评估最小化测量对计算值的影响。将用单调拉伸过程获得的弹性模数与弹性状态中从载荷卸载循环获得的值进行比较。发现后者导致更可重复和合理的值，标准偏差明显较小。为了启用模量值电子反向衍射和X射线衍射的解释以强调纹理和微观结构的影响。两种不同的电沉积的铜箔纸是自铜在许多工业应用中使用的。
The accurate determination of the elastic properties is non-trivial for metallic foils. The measured elastic modulus is often described in literature as significantly smaller than the respective modulus of the bulk counterparts. This paper describes a straight forward way to minimize the influence of the measurement on the calculated values using a standard tensile testing device combined with a laser speckle extensometer and advanced data evaluation. The elasticmodulus obtained with a monotonic tensile procedure is compared to values obtained frommultiple loading unloading cycles in the elastic regime. The latter were found to lead to more reproducible and reasonable values with significantly smaller standard deviations. To enable interpretation of the modulus values electron backscatter diffraction and X ray diffraction were used to emphasize the effects of texture and microstructure. Two different electrodeposited copper foilswere characterized since copper iswidely used in many industrial applications.
