Multimodal structural health monitoring based on active and passive sensing

Nasrollahi, Amir; Deng, Wei; Ma, Zhaoyun; Rizzo, Piervincenzo

doi:10.1177/1475921717699375

Cited by 40 publications

(31 citation statements)

References 81 publications

(90 reference statements)

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“…AE is the phenomenon that a part of the material emits a transient elastic wave due to the rapid release of energy. 40,41 The AE sensor can transform elastic wave into electrical signal on the basis of piezoelectric effect. The analysis of electrical signals can infer the change of internal defects.…”

Section: Ae Monitoring Methodsmentioning

confidence: 99%

A novel acoustic emission monitoring method of cross-section precise localization of defects and wire breaking of parallel wire bundle

Shi

2019

Struct Control Health Monit

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Summary The monitoring and localization of defects and wire breaking of bridge cable are vital to the safe operation of the whole bridge. In this work, an innovative monitoring method that uses waveguides to draw out the steel wires at the end of the cable is proposed. This monitoring method can effectively capture the acoustic emission (AE) signal produced by defects and wire breaking of the cable. The transverse position of the wire breaking can also be accurately located so as to provide basis for the decision making of maintenance department. The pencil‐lead breaks (PLB) test method is utilized to investigate the influence of the transition modes between the waveguide and the sensor and the connection modes between the waveguide and the cone on the AE signal. The PLB test and tensile test method are utilized to examine the AE signal characteristics of different sensors at the end of steel wires. Results showed that the cone transition between the waveguide and the sensor and the welding connection between waveguide and cone exhibit the minimum effect on AE waveform and parameters, such as amplitude, compared with that of the reference sensor without waveguide. In the tensile test, the transverse position of the wire breaking cannot be identified by analyzing the AE signals collected by each senor when the wire breaks, whereas it can be identified in the process of defects before the wire breaks.

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Section: Ae Monitoring Methodsmentioning

confidence: 99%

A novel acoustic emission monitoring method of cross-section precise localization of defects and wire breaking of parallel wire bundle

Shi

2019

Struct Control Health Monit

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“…These are specific types of elastic waves that are generated and measured by PZTs. This method has been widely used for damage detection in metallic and composite structures because GW can travel a relatively long distance and are sensitive to damage [8][9][10][11]. However, components of these kinds of systems consist of a waveform strategy of combining EMI methods and GW methods.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Islam and Huang [30] achieved damage detection through the combination of the EMI method and GW methods, and Nasrollahi et al [8] presented an integrated SHM system that includes acoustic emission, EMI, and guided ultrasonic wave. Hyun-Jun Park et al [31] proposed a wireless hardware scheme for implementing the GW method and measuring EMI signals.…”

Section: Introductionmentioning

confidence: 99%

“…The designed system is applied for impact monitoring and damage detection for a supporting structure of a sailplane. Another active sensing technique is based on electromechanical impedance (EMI) [2,8], which can be applied on a composite material [12]. The theoretical model for the EMI method was first established by Liang et al [13].…”

mentioning

confidence: 99%

“…Second, SHM combinations can also reduce the weight of the total system, and by combining the active and passive SHM methods, the energy consumption can also be reduced. The active method, which requires more energy, will only be active when the passive method detects an issue, and the passive method requires a low level of power consumption and will inspect the structures continuously [8,26].These advantages have led to many studies that directly combine different SHM methods to achieve a more robust damage detection strategy. Sevillano et al [27] developed a damage detection…”

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confidence: 99%

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Development of a Piezoelectric Transducer-Based Integrated Structural Health Monitoring System for Impact Monitoring and Impedance Measurement

Guo

Huang

2020

Applied Sciences

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Structural health monitoring (SHM) techniques, which are also considered as online nondestructive testing methods, are significant in modern structural engineering due to their ability to guarantee structure safety while reducing maintenance cost. It is often necessary to combine different SHM methods to achieve a more reliable damage detection result. However, the hardware of the SHM systems is usually expensive, bulky, and heavy when they are designed separately. Therefore, this paper proposes a three-layer architecture for designing an integrated multi-function SHM system to achieve a small, lightweight, and low power consumption SHM system. Based on the architecture, an integrated SHM system with impact monitoring and electromechanical impedance measurement is developed. In addition, a scheduling module is developed to manage the two functions of the system. Furthermore, an integrated interface is developed to transfer the data and the command. Then, an integrated printed circuit board is designed and manufactured to achieve the aforementioned functions. The designed system is applied for impact monitoring and damage detection for a supporting structure of a sailplane. Another active sensing technique is based on electromechanical impedance (EMI) [2,8], which can be applied on a composite material [12]. The theoretical model for the EMI method was first established by Liang et al. [13]. In this model, the electrical impedance, which is the inverse of the electrical admittance, of a PZT sensor is shown to be coupled with the mechanical impedance of the host structure. Thus, the measured impendence from PZT can represent the severity of damage in the host structure. However, there are some practical issues related to the application such as debonding issues, temperature effects, and so on [14]. Usually, equipment employed for measuring electric impedance includes an inductance-capacitance-resistance (LCR) meter or impedance analyzer [15]. This hardware, including Agilent 4194A and Wayne Kerr 6500B [16], and so on, is often employed in experiments. Researches using this hardware tend to focus on some practical issues and theoretical problems and pursue a high level of precision; thus, reducing energy consumption and weight of hardware is not considered in these studies. Moreover, some of SHM systems utilizing EMI methods require a set of PZTs to form a sensor network, and this causes the hardware system to become heavy and complex. Therefore, it is necessary to design a lightweight and low-power consumption hardware system for real applications. One way to shrink the size of the hardware system is to employ a chip named AD5933. The AD5933 impedance converter is a high-precision impedance converter system with an on-board frequency generator, a 12-bit 1MSPS, ADC, and an on-board digital signal processing (DSP) engine processing a discrete Fourier transform (DFT) with a weight of less than 5 g. Nowadays, it is employed by many researchers for designing low-cost, on-board, and wireless SHM systems [4]. The next gen...

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