Experimental investigation of composite beams with piezoelectric actuation and debonding
Experimental investigation of composite beams with piezoelectric actuation and debonding
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DOI：
10.1088/0964-1726/7/4/010
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发表时间：
1997-11
影响因子：
4.1
通讯作者：
C. Seeley;A. Chattopadhyay
中科院分区：
文献类型：
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作者：
C. Seeley;A. Chattopadhyay
压电式换能器可作为复合材料结构减振的传感器和执行器。换能器-层合板界面处的脱粘导致动态响应和控制权威的显著变化。本文对这一重要问题进行了研究。用不同的堆叠顺序和脱粘长度构建了具有表面粘结压电换能器的复合材料试件。采用模拟电路实现了闭环控制。给出了开环和闭环频率及阻尼比的实验结果。计算结果与一种新发展的基于高阶理论的高阶理论很好地吻合，该理论用于模拟具有脱粘的压电换能器的复合材料。由于脱粘，开环和闭环系统的频率和阻尼比发生了显著变化。
Piezoelectric transducers can be used as sensors and actuators for vibration reduction in composite structures. Debonding at the transducer-laminate interface results in significant changes to the dynamic response and control authority. This important issue is studied in the current work. Composite specimens with surface bonded piezoelectric transducers were constructed with varying stacking sequences and debonding lengths. Closed loop control was implemented using an analog circuit. Experimental results were obtained for both open and closed loop frequencies and damping ratios. The results correlate well with a newly developed higher order based theory for modeling composites with debonded piezoelectric transducers. Significant changes are observed in the open and closed loop frequencies and damping ratios as a result of debonding.