Strain sensing systems tailored for tensile measurement of fragile wires
Strain sensing systems tailored for tensile measurement of fragile wires
复制标题
专为脆弱电线张力测量而设计的应变传感系统
DOI：
10.1088/0953-2048/18/12/031
复制
发表时间：
2005
影响因子：
3.6
通讯作者：
A. Nyilas
中科院分区：
文献类型：
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作者：
A. Nyilas
在IEC/TC 90和VAMAS/TWA 16的框架内完成了Nb_3Sn超导线材的基本应力-应变测量。一个关键的任务是评估传感系统的分辨率，准确度和精度时，测量杨氏模量。在实际的Nb 3Sn线测量之前，使用不同类型的引伸计对由铜和不锈钢组成的具有与Nb 3Sn线类似的直径的金属线的弹性线特性进行了广泛的研究。在这些校准测试之后，不同公司的Nb 3Sn线测量结果导致了关于所用引伸计的总尺寸和重量的几个重要事实。尺寸可以与应力应变行为的初始阶段相关。事实上，生产线产生的线卷曲效应对杨氏模量测量产生了深远的影响。在这种情况下，确定杨氏模量的可能性，从卸载柔度线在塑性区的应力-应变曲线被认为是。使用这种测试方法获得的数据进行了讨论下考虑的Nb 3Sn线的复合性质。此外，一个非接触式传感系统的基础上的双光束激光引伸计被用来调查这种新的传感系统的潜力。
Fundamental stress versus strain measurements were completed on superconducting Nb3Sn wires within the framework of IEC/TC90 and VAMAS/TWA16. A key task was the assessment of sensing systems regarding resolution, accuracy, and precision when measuring Young’s modulus. Prior to actual Nb3Sn wire measurements metallic wires, consisting of copper and stainless steel having diameters similar to the Nb3Sn wire, were extensively investigated with respect to their elastic line properties using different types of extensometers. After these calibration tests Nb3Sn wire measurements of different companies resulted in several important facts with respect to total size and weight of the used extensometers. The size could be correlated to the initial stage of stress versus strain behaviour. In fact, the effect of wire curls resulting from the production line had a profound effect on Young’s modulus measurements. Within this context, the possibility of determining Young’s modulus from unloading compliance lines in the plastic regime of the stress–strain curve was considered. The data obtained using this test methodology were discussed under consideration of the composite nature of Nb3Sn wire. In addition, a non-contacting sensing system based on a double-beam laser extensometer was used to investigate the potential of this new sensing system.
Nb_3Sn超导复合丝中铜的力学行为研究
DOI：
--
发表时间：
2004
期刊：
Physica C 412-414
影响因子：
--
作者：
M.Hojo;M.Tanaka;S.Ochiai他4名
通讯作者：
S.Ochiai他4名