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首页> 外文会议>International Conference on Adaptive Structures and Technologies; 20051009-12; Paris(FR) >DAMAGE DETECTION IN FIBER-REINFORCED LAMINATES USING IMPEDANCE TESTING WITH PIEZOELECTRIC ACTIVE FIBER COMPOSITE ELEMENTS
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DAMAGE DETECTION IN FIBER-REINFORCED LAMINATES USING IMPEDANCE TESTING WITH PIEZOELECTRIC ACTIVE FIBER COMPOSITE ELEMENTS

机译：压电有源纤维复合元件的阻抗测试在纤维增强叠层中的损伤检测

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摘要

Active Fiber Composites (AFC) made from piezoelectric fibers show promising potential, both, as actuators for smart composites and as sensors. AFC bonded to model structures (fiber-reinforced polymer-matrix laminate plates) are used for electrical impedance measurements. It is shown that detection of damage growth, e.g., increasing delamination, based on electrical impedance measurements taken at different times is feasible. Approaches for the analysis of the impedance spectra are investigated and potential problems highlighted. Changes in an empirically defined damage index correlate well with increasing size of the defect.
机译：由压电纤维制成的活性纤维复合材料（AFC）作为智能复合材料的致动器和传感器都显示出广阔的发展潜力。将AFC粘结到模型结构（纤维增强的聚合物矩阵层压板）上用于电阻抗测量。已经表明，基于在不同时间进行的电阻抗测量来检测损坏的增长，例如增加分层。研究了阻抗谱分析的方法，并突出了潜在的问题。根据经验确定的损伤指数的变化与缺陷尺寸的增加密切相关。

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