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Sensors 2017, 17(5), 1019; doi:10.3390/s17051019

Theoretical Analysis of the Dynamic Properties of a 2-2 Cement-Based Piezoelectric Dual-Layer Stacked Sensor under Impact Load

School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
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Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 24 March 2017 / Revised: 18 April 2017 / Accepted: 27 April 2017 / Published: 4 May 2017
(This article belongs to the Section Physical Sensors)
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Abstract

Cement-based piezoelectric materials are widely used due to the fact that compared with common smart materials, they overcome the defects of structure-incompatibility and frequency inconsistency with a concrete structure. However, the present understanding of the mechanical behavior of cement-based piezoelectric smart materials under impact load is still limited. The dynamic characteristics under impact load are of importance, for example, for studying the anti-collision properties of engineering structures and aircraft takeoff-landing safety. Therefore, in this paper, an analytical model was proposed to investigate the dynamic properties of a 2-2 cement-based piezoelectric dual-layer stacked sensor under impact load based on the piezoelectric effect. Theoretical solutions are obtained by utilizing the variable separation and Duhamel integral method. To simulate the impact load and verify the theory, three types of loads, including atransient step load, isosceles triangle load and haversine wave load, are considered and the comparisons between the theoretical results, Li’s results and numerical results are presented by using the control variate method and good agreement is found. Furthermore, the influences of several parameters were discussed and other conclusions about this sensor are also given. This should prove very helpful for the design and optimization of the 2-2 cement-based piezoelectric dual-layer stacked sensor in engineering. View Full-Text
Keywords: cement-based piezoelectric sensor; impact load; dynamic properties; theoretical solutions; numerical analysis; variable separation method; Duhamel integral cement-based piezoelectric sensor; impact load; dynamic properties; theoretical solutions; numerical analysis; variable separation method; Duhamel integral
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Zhang, T.; Liao, Y.; Zhang, K.; Chen, J. Theoretical Analysis of the Dynamic Properties of a 2-2 Cement-Based Piezoelectric Dual-Layer Stacked Sensor under Impact Load. Sensors 2017, 17, 1019.

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