Abstract We present in this work the experimental results of shear stress applied to a rough metallic interface. This interface was test using a weak DC current, measures of the voltage evolution were done on each end of the system while an increasing shear stress was applied. From these measurements we deduce the evolution of the interface electrical resistance to attempt to highlight the contact area evolution. Results show that the interface resistance follows a non-monotonic behavior: it first increases to a maximum and then decreases until the contact breaks. The evolution of the interface resistance is related to the evolution of the contact area, the non-monotonic behavior is interpreted as different deformation regimes in the spots of contact.

中文翻译：

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剪切应力下钢粗糙界面的电探测

摘要 我们在这项工作中介绍了应用于粗糙金属界面的剪切应力的实验结果。该界面使用弱直流电流进行测试，在施加增加的剪切应力的同时，在系统的每一端测量电压演变。从这些测量中，我们推断出界面电阻的演变，以试图突出接触区域的演变。结果表明，界面电阻遵循非单调行为：它首先增加到最大值，然后减小直到接触断开。界面电阻的演变与接触面积的演变有关，非单调行为被解释为接触点的不同变形状态。