Output Voltage Characteristics of Piezoelectric Fiber/Aluminum Composites Fabricated by Interphase Forming/Bonding Method

Yanaseko, Tetsuro; Asanuma, Hiroshi; Chiba, Takamitsu; Takeda, Noriyo; Sato, Hiroshi

doi:10.14723/tmrsj.39.325

Cited by 9 publications

(10 citation statements)

References 21 publications

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“…In addition, the anisotropy of the output voltage can be represented by Equation

V = D_{x} ε \frac{1 - \cos 2 α}{2} + D_{y} ε \frac{1 + \cos 2 α}{2}

where D x and D y are coefficients of the output voltage in the x‐ and y‐ directions, respectively, and α is the strain direction. The output voltage anisotropy calculated using the results of the described experiments is shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Improvement Estimation Accuracy of Impact Detection Using Metal‐Core Piezoelectric Fiber/Aluminum Composites

et al. 2019

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Metal-core piezoelectric fiber/aluminum composites are promising candidates for use as sensors for structural health monitoring (SHM) systems. These composites exhibit excellent mechanical properties compared with conventional piezoelectric ceramics because the fiber is embedded into the aluminum matrix using the interphase forming/bonding method. Furthermore, it has emerged that the output voltage characteristics of composites show distinct anisotropy. Herein, an impact detection system with more practical estimation accuracy is developed by performing wavelet transformation on the output voltage. To investigate the practicality of the proposed method, the estimation results are compared with the results using the conventional output voltage. By exploiting the anisotropic response, the new system is expected to reduce the number of sensors required compared with conventional systems, while retaining accuracy. The results show that the present system could be applied successfully using models of the output voltage and signals obtained from composites fixed in two different positions. Application of the wavelet transform method to the output voltage reduced the estimation errors in comparison with values estimated directly from the output voltage, with maximum estimation error of 4.38 mm. This accuracy cleared the minimum required accuracy for an SHM system; thus, confirming the validity of this approach.

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“…In addition, the anisotropy of the output voltage can be represented by Equation

V = D_{x} ε \frac{1 - \cos 2 α}{2} + D_{y} ε \frac{1 + \cos 2 α}{2}

Section: Resultsmentioning

confidence: 99%

Improvement Estimation Accuracy of Impact Detection Using Metal‐Core Piezoelectric Fiber/Aluminum Composites

et al. 2019

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“…In this study, a vibration viscosity measuring sensor capable of measuring the viscosity of engine oil was used for monitoring the deterioration of the oil using a metal-core piezoelectric fiber/aluminum composite [20,21]. This composite embeds a metal-core piezoelectric fiber [22,23] in the aluminum matrix.…”

Section: Introductionmentioning

confidence: 99%

Vibration Viscosity Sensor for Engine Oil Monitoring Using Metal Matrix Piezoelectric Composite

et al. 2019

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Lubricants such as engine oil play an important role in preventing machine wear and damage. Monitoring the deterioration of lubricating oils is a significant technical issue in machine maintenance. In this study, a sensor for monitoring engine oil viscosity was developed using a metal-core piezoelectric fiber/aluminum composite. This composite is a piezoelectric ceramic that is reinforced by a metal matrix; it is expected to be utilized in harsh environments such as the inside of an engine. An active type measurement method was employed to monitor variations in the viscosity of glycerin solution as a model liquid. In this method, a self-generated vibration is correlated to the viscosity of a liquid by measuring the damped vibration amplitude and the variation in the resonance frequency. The results showed that the vibration had a high sensitivity to the liquid viscosity; further, it was observed that the shift in resonance frequency correlated to a wider range of measurable viscosity. Both measured parameters indicate that the metal-core piezoelectric fiber/aluminum composite is a viable sensor for engine oil monitoring.

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“…Moreover, it is a product of a private company (Nagamine Manufacturing Co., Ltd.) and difficult to redesign. For example, the output voltage of this composite depends on the direction of the applied strain because of the shape of the piezoelectric ceramic, which cannot be redesigned (Yanaseko et al, 2014;Yanaseko et al, 2015a and2015b). Considering the practical application to SHM, it is necessary to realize sensor characteristics according to the application.…”

Section: Introductionmentioning

confidence: 99%

Development of surface oxidized metal fiber/ piezoelectric ceramics/aluminum composite

Horikiri

Yanaseko

Kuboki

et al. 2019

Mechanical Engineering Journal

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This paper describes the fabrication of a metal matrix piezoelectric composite using surface-oxidized nickel fiber as the internal electrode. Piezoelectric ceramics, which have excellent piezoelectric properties, are widely used as energy conversion materials. However, their application is limited by their brittleness. To solve this problem, a metal-core piezoelectric ceramic fiber/aluminum composite has been developed by using the interphase forming/bonding method. Here, a piezoelectric ceramic is reinforced by embedding it in an aluminum matrix, and this process causes the piezoelectric ceramic to have better mechanical properties than a bulk ceramic. However, this composite has some serious disadvantages considering that it cannot be designed to possess arbitrary piezoelectric properties because the metal-core piezoelectric fiber is formed by the extrusion method, so that the sectional shape cannot be arbitrarily changed. In this paper, a metal matrix piezoelectric composite using a surface-oxidized nickel fiber as the internal electrode is proposed. This composite provides design flexibility in that its piezoelectric property can be changed by varying the size and materials of the composite. The fabrication procedure of this composite consists of three steps: oxidation of the internal electrode, molding and sintering of the piezoelectric ceramic, and embedding of the piezoelectric ceramic into the metal matrix. The proposed composite is fabricated under optimized oxidizing and molding conditions. An impact test is performed on the fabricated composite, and the output voltage is measured. The test results indicate that the composite is capable of generating piezoelectricity. Overall, the study results substantiate the validity of the concept and fabricating method of the proposed composite.

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Output Voltage Characteristics of Piezoelectric Fiber/Aluminum Composites Fabricated by Interphase Forming/Bonding Method

Cited by 9 publications

References 21 publications

Improvement Estimation Accuracy of Impact Detection Using Metal‐Core Piezoelectric Fiber/Aluminum Composites

Improvement Estimation Accuracy of Impact Detection Using Metal‐Core Piezoelectric Fiber/Aluminum Composites

Vibration Viscosity Sensor for Engine Oil Monitoring Using Metal Matrix Piezoelectric Composite

Development of surface oxidized metal fiber/ piezoelectric ceramics/aluminum composite

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