In this study, an innovative methodology to experimentally distinguish the ElectroPlastic (EP) effect from the thermal expansion and thermal softening was developed and applied to validate the proposed theoretical electro-mechanical model. Two series of quasi-static uniaxial tension experiments with titanium and copper were conducted and a quadratic dependence was observed of the EP strain on the electric current density, corrected for increased dislocation density levels. This study experimentally confirmed the existence of EP phenomenon in ductile metals. The significance of the non-EP effects in the electro-mechanical coupling problems was estimated and the experimental procedure limitations were thoroughly discussed as well as the sensitivity and uncertainty, associated with each of the model parameters. Conclusions and suggestions for future work supplement the study. This piloting work on electro-mechanical coupling provides a solid foundation for further modelling and experimental observation of the electroplastic effect.

在这项研究中，开发了一种创新的方法，通过实验将电子塑料（EP）效应与热膨胀和热软化区分开来，并将其应用于验证所提出的理论机电模型。进行了两个钛和铜的准静态单轴拉伸实验，观察到EP应变对电流密度的二次依赖性，并针对位错密度水平的提高进行了校正。这项研究通过实验证实了延性金属中存在EP现象。估计了非EP效应在机电耦合问题中的重要性，并彻底讨论了实验程序的局限性以及与每个模型参数相关的灵敏度和不确定性。结论和对未来工作的建议补充了这项研究。机电耦合的这项试验工作为进一步建模和实验观察电塑性效应提供了坚实的基础。