Mechanical-electric response characteristics of 1-3 cement based piezoelectric composite under impact loading
Mechanical-electric response characteristics of 1-3 cement based piezoelectric composite under impact loading
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DOI：
10.1016/j.conbuildmat.2019.116781
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发表时间：
2019-12
影响因子：
7.4
通讯作者：
Feng Zhang;Pengju Feng;Teng Wang;Jiang-ying Chen
中科院分区：
文献类型：
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作者：
Feng Zhang;Pengju Feng;Teng Wang;Jiang-ying Chen
为了研究以PZT-5H为压电材料的1-3水泥基压电复合材料在冲击载荷作用下的机电响应特性，利用分体式霍普金森压力棒测量装置进行了单次冲击压缩试验和重复冲击压缩试验。实验结果表明1-3水泥基压电复合材料是应变率敏感材料。材料的机电响应存在一个阈值。当冲击压缩应力不高于70MPa时，样品在单次冲击压缩试验中具有良好的线性度和数值灵敏度318pC/N。在重复冲击压缩试验中，当冲击压应力不高于70MPa时，随着冲击次数的增加，样品的输出电位移没有明显变化，样品具有良好的重复性。然而，当冲击压应力大于70MPa时，随着冲击次数的增加，样品的输出电位移逐渐减小。
In order to study the mechanical-electric response characteristics of 1-3 cement based piezoelectric composite under impact loading where PZT-5H is used as the piezoelectric material, both single impact compression test and repeated impact compression test were performed by using the Split Hopkinson Pressure Bar measurement device. The obtained experimental results showed that the 1-3 cement based piezoelectric composite is the strain-rate sensitive material. There is a threshold value for the mechanical-electric response of the material. When the impact-induced compressive stress is not higher than 70 MPa, the sample has a good linearity and numerical sensitivity 318pC/N in the single impact compression test. In the repeated impact compression test, when the impact compressive stress is not higher than 70 MPa, the output electrical displacement of the sample does not change significantly with the increased impact number and the sample seems to have good repeatability. When the impact compressive stress is greater than 70 MPa, however, the output electrical displacement of the sample gradually decreases with the increased impact number.