Year-end Sale % OFF 
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.
Highlights
Cement-based piezoelectric sensors, a new kind of functional structure developed in recent decades, are fabricated from a cement matrix and piezoelectric ceramic phase in different volume fractions and using various mixing rules [1,2]
A numerical simulation of the 2-2 cement-based piezoelectric dual-layer stacked sensor under impact load is presented and compared with the theoretical solutions obtained in the previous sections and Li’s results [25]
It is defined that the cement layer and piezoelectric layer are made of ordinary Portland cement and piezoelectric ceramics, respectively
Summary
Cement-based piezoelectric sensors, a new kind of functional structure developed in recent decades, are fabricated from a cement matrix and piezoelectric ceramic phase in different volume fractions and using various mixing rules [1,2]. The effects of ceramic volume fraction and water-cement ratio on the properties of the composites were studied. Chaipanich et al have investigated the dielectric properties of 2-2 connectivity lead magnesium niobate-lead titanate cement composites [18,19] They have researched the influences of 1-year ageing on the piezoelectric coefficient of the composite after poling. Zhang et al have studied the dynamic properties of piezoelectric structures under impact load and the theoretical solutions of the mechanical and electrical fields of the piezoelectric structure were obtained with the standing and traveling wave methods [24]. By combining these equations and boundary conditions, theoretical solutions of 2-2 cement-based piezoelectric dual-layer stacked sensor are obtained by utilizing the variable separation method and Duhamel integral. This study should be very helpful for the design and optimization of 2-2 cement-based piezoelectric dual-layer stacked sensors in engineering
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
