中文摘要：

由于非金属复合材料及其内部不同损伤具有不同介电特性,采用平面式电容传感器阵列可实现无损可视化检测。针对平面式阵列电极结构,研究不同激励模式对复合材料内部缺陷检测效果影响。提出单激励、双激励和奇偶激励3种激励模式,对比分析各种激励模式下传感器信号强度、探测深度等性能差异。结果表明：奇偶激励模式在信号测量和成像质量方面都优于前2种模式。同时也验证了基于电容敏感机理的平面电容传感器阵列对复合材料内部缺陷检测的可行性和有效性。

英文摘要：

Because of the different dielectric properties of the nonmetal composite material and its internal damages, a planar capacitive sensor array can be used to achieve visual non-destructive testing. The influence of different excitation modes on testing effect of the internal defects of the composite, aiming at the planar array electrode structure is studied. Three kinds of excitation mode, single, dual and parity excitation are proposed. And their performance differences such as signal strength and detecting depth are analyzed. Compared with single and dual excitation, the results show that signal measurement and imaging quality c/f the parity excitation are better than the others. The feasibility and effectiveness of planar capacitive sensor array based on capacitance sensitive principle for internal defect detection of composite material are also verified.