Improving piezoelectric energy harvesting performance through mechanical stiffness matching
Improving piezoelectric energy harvesting performance through mechanical stiffness matching
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DOI：
10.1080/15376494.2023.2295383
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发表时间：
2023-12-14
影响因子：
2.8
通讯作者：
Orhan，Sadettin
中科院分区：
文献类型：
--
作者：
Kurt，Polat;Narayan，Bastola;Orhan，Sadettin
本文研究了压电能量采集器中源结构和活性材料之间的机械能传递。首先，提出了一种分析预测，以提高机械能转移到压电材料，并通过定制的梁的刚度，以现成的压电复合材料，通过数值模型和实验进行验证。然后提出了一个实验研究，从而通过调整压电陶瓷和环氧树脂填料相的体积分数控制的冷冻铸造压电复合材料的机械性能。这为定制压电复合材料的机械性能提供了一种新的方法，以最大限度地将机械能传递到材料的刚度匹配。
The mechanical energy transfer between the source structure and active material in piezoelectric energy harvesters is investigated here. First, an analytical prediction to improve mechanical energy transfer into the piezoelectric material is proposed and validated by tailoring the stiffness of the beam to off-the-shelf piezocomposites through numerical models and experiments. An experimental study is then presented whereby the mechanical properties of freeze cast piezocomposites are controlled by adjusting the volume fraction of piezoceramic and epoxy filler phases. This offers a new approach for tailoring the mechanical properties of piezocomposites to maximize mechanical energy transfer into the materialviastiffness matching.