Structural health monitoring by the piezoresistive response of tufted reinforcements in sandwich composite panels

Martins, A.T.; Aboura, Zoheir; Harizi, Walid; Laksimi, A.; Hamdi, Khalil

doi:10.1016/j.compstruct.2018.11.032

Cited by 21 publications

(8 citation statements)

References 40 publications

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“…Since the nineteenth century, the emergence of intelligent materials has provided an effective way to realize the health monitoring of engineering structures. Among many smart materials, piezoelectric ceramics, as the main representative of piezoelectric materials, have great application potential in the health monitoring of engineering structures because of their fast reaction speed, wide frequency response range, easy cutting, and low cost and have the characteristics of positive and negative piezoelectric effect [30][31][32][33][34][35]. The structural health monitoring technology based on piezoelectric ceramics is mainly divided into two categories: active health monitoring technology and passive health monitoring technology [36].…”

Section: Introductionmentioning

confidence: 99%

Real‐Time Monitoring of Timber‐Surface Crack Repair Using Piezoelectric Ceramics

2021

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Real-time assessment of timber-surface crack repair is crucial to the stability and safety of timber structures. Epoxy resin was used to repair timber cracks, and the active sensing technique using piezoelectric ceramics was applied to monitor the repair process of timber surface cracks in real time. Sixteen wood samples were designed for axial compression tests and active monitoring tests. A pair of lead zirconate titanate patches was pasted on the surface of the timber specimens as actuators and sensors for signal transmission and reception, through wavelet packet analysis, the variations in the signal amplitude, and wavelet coefficients. The relationship between the wavelet packet energy of the monitoring signal and the ultimate bearing capacity of the specimens at different periods after grouting was established. Based on the root-mean-square deviation, the damage index, DI, was introduced to evaluate the repair degree of timber surface cracks quantitatively. The results showed that the active sensing method can evaluate the strength development in timber-surface crack repair in real time.

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Section: Introductionmentioning

confidence: 99%

Real‐Time Monitoring of Timber‐Surface Crack Repair Using Piezoelectric Ceramics

2021

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“…21,22 Up to now, commercially available piezoresistive sensors are primarily based on silicon materials or metallic films, but these materials have a lower detection limit due to their limited elongation, among other mechanical properties. 23,24 Because of their versatility, low cost, and quick processing, polymer-based smart materials serve as an acceptable alternative to address these drawbacks. In addition, their properties can be tailored to different applications and can easily be incorporated into different devices and components.…”

Section: Introductionmentioning

confidence: 99%

Composite materials fabricated from a conductive polymer with additions of battery waste powders and recycled copper wires

Cardona-Vivas

Correa

Colorado

2021

Journal of Composite Materials

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A new multifunctional composite material manufactured from vinyl-acrylic resin and mixed with battery waste powders containing graphite, manganese oxide, and zinc oxide particles has been developed. The battery waste (BW) was obtained from a recycling company as a byproduct from the grinding process of primary batteries (alkaline and zinc carbon batteries). In addition, 24 and 28 AWG copper wires (CuW) were obtained from recycling circuit waste, which were added in 5, 10 and 15 wt% contents to form composite materials, with all CuW of 2 mm length. These formulations were characterized using scanning electronic microscopy, compression, density, and piezoresistivity tests. When copper was added to the composite material, the behavior of the sensor was linear, a characteristic desired in piezoresistive sensors since they do not need any additional configuration to obtain said linearity. As the percentage of copper increased, the sensitivity of the sensor decreased and the conductivity increased.

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“…In addition, active sensing based on wave propagation theory is also widely used in structural health monitoring to detect cracks and other damage in the structure [21][22][23][24][25][26][27][28][29][30]. Song et al [31,32] first proposed the concept of piezoelectric smart aggregate (SA), which is to pack the piezoelectric ceramic piece with marble to achieve its protection.…”

Section: Introductionmentioning

confidence: 99%

Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis

Xia

Yang

et al. 2020

Advances in Civil Engineering

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Concrete is a complex building material. Under normal curing conditions, concrete strength shows a nonlinear development process at an early age (1∼28 d). In the first few days after the completion of pouring, the strength of concrete increases slowly. Subsequently, the strength of concrete increases rapidly, reaching about 90% of its age strength. Finally, its strength gradually stabilizes. This paper introduces the experiment of 28-day concrete age strength monitoring based on embedded piezoelectric smart aggregate (SA). Two piezoelectric SAs were embedded in a concrete-filled GFRP (glass fiber reinforced polymer) tube column, one of which emitted a sinusoidal sweep signal and the other SA received the signal. With the hydration reaction of concrete, the stress wave would be significantly different when passing through concrete, and the received signal is changing constantly. Through power spectral density and wavelet packet energy analysis, the monitoring signal of concrete age within 28 days was analyzed. The experimental results show that the wavelet packet energy and power spectral density of the sensor monitoring signal show a nonlinear growth trend with time during the concrete target age. It can be divided into three stages, and the fifth day and the fourteenth day are the demarcation point of energy growth. And the trend of energy change corresponds well with the change of actual concrete strength and age. Comparing and analyzing the received signal energy of the sensor and the power spectral density function of the stress wave signal of the concrete specimen, the trend of the amplitude in the natural frequency domain is found to be the same in the three stages.

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Structural health monitoring by the piezoresistive response of tufted reinforcements in sandwich composite panels

Cited by 21 publications

References 40 publications

Real‐Time Monitoring of Timber‐Surface Crack Repair Using Piezoelectric Ceramics

Real‐Time Monitoring of Timber‐Surface Crack Repair Using Piezoelectric Ceramics

Composite materials fabricated from a conductive polymer with additions of battery waste powders and recycled copper wires

Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis

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