Various test techniques have been established to investigate the electromechanical properties (EMPs) of coated conductor (CC) tapes under external loads. The most conventional method is to examine variations in a critical current, I _c, by repeatedly measuring the V–I curves while intermittently applying a load or deformation to the CC tape. Conventional methods for obtaining EMPs, such as the reversible limits for I _c degradation, require repeated measures of I _c in a loading–unloading scheme, and this entails considerable time and effort, therefore, they must be improved for practical and engineering reasons. We recently developed an easy-to-use system that can continuously measure variations in I _c while applying a load or deformation to the CC tape, thereby evaluating its EMPs. The main advantages of the new measurement system are real-time monitoring of I _c behaviors during loading and allowing reduced the test time. While it uses a conventional test configuration, this new system continuously measures I _c through effective feedback control of the electrical-field voltage induced in the CC tape specimen during loading. Through this feedback control system, the I _c degradation behaviors in CC tapes resulting from possible cracking in the superconducting layer during loading are depicted. The reversible limits for I _c degradation were also determined. To assess the effectiveness of this newly developed measuring system, the applicability of the method was identified by evaluating the EMPs of various commercially available CC tapes. By comparing the results with those achieved using conventional testing, we found this to effectively evaluate the EMPs of CC tapes. The results showed that this system provides a simple way of evaluating the EMPs of high-temperature superconductor CC tapes by simultaneously measuring variations in I _c under load or deformation. It is much faster at depicting I _c degradation behaviors, and it elaborately determines the reversible limits of I _c induced in the CC tape during testing.

中文翻译：

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通过同时测量临界电流和机械负载来表征 REBCO 涂层导体机电特性的系统

已经建立了各种测试技术来研究涂层导体 (CC) 带在外部负载下的机电性能 (EMP)。最传统的方法是检查临界电流的变化，我 _c , 通过反复测量V-I在 CC 胶带上间歇性地施加负载或变形时弯曲。获得 EMP 的常规方法，例如可逆极限我 _c降解，需要反复测量我 _c在装卸方案中，这需要大量的时间和精力，因此，出于实际和工程原因，必须对其进行改进。我们最近开发了一个易于使用的系统，可以连续测量变化我 _c同时对 CC 胶带施加负载或变形，从而评估其 EMP。新测量系统的主要优点是实时监测我 _c加载期间的行为并允许减少测试时间。虽然它使用传统的测试配置，但这个新系统连续测量我 _c通过有效反馈控制在加载过程中在 CC 胶带样本中感应的电场电压。通过这个反馈控制系统，我 _c描述了在加载过程中由于超导层可能破裂而导致的 CC 带的降解行为。的可逆极限我 _c降解也被确定。为了评估这种新开发的测量系统的有效性，通过评估各种市售 CC 胶带的 EMP，确定了该方法的适用性。通过将结果与使用传统测试获得的结果进行比较，我们发现这可以有效地评估 CC 磁带的 EMP。结果表明，该系统通过同时测量我 _c在负载或变形下。描绘速度要快得多我 _c降解行为，它精心确定了可逆极限我 _c在测试期间在 CC 磁带中感应。