A high-resolution structural health monitoring system based on SH wave piezoelectric transducers phased array

Hu, Qiang; Chen, Mingtong; Su, Zhongqing; Li, Faxin

doi:10.1016/j.ultras.2019.04.005

Cited by 47 publications

(22 citation statements)

References 27 publications

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“…Huan et al suggest using a shear horizontal SH guided wave based SHM system with total focusing method imaging for monitoring of metallic structures (Huan et al 2019). The suitability of the shear horizontal waves for the defect detection in metallic structures was investigated as well by Petcher et al (Petcher and Dixon 2015).…”

Section: Guided Wave Applications To Shm Of Aerospace Componentsmentioning

confidence: 99%

Ultrasonic Methods

Samaitis

Jasiūnienė

Paćko

et al. 2021

Structural Health Monitoring Damage Detection Systems for Aerospace

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Ultrasonic inspection is a well recognized technique for non-destructive testing of aircraft components. It provides both local highly sensitive inspection in the vicinity of the sensor and long-range structural assessment by means of guided waves. In general, the properties of ultrasonic waves like velocity, attenuation and propagation characteristics such as reflection, transmission and scattering depend on composition and structural integrity of the material. Hence, ultrasonic inspection is commonly used as a primary tool for active inspection of aircraft components such as engine covers, wing skins and fuselages with the aim to detect, localise and describe delaminations, voids, fibre breakage and ply waviness. This chapter mainly focuses on long range guided wave structural health monitoring, as aircraft components require rapid evaluation of large components preferably in real time without the necessity for grouding of an aircraft. In few upcoming chapters advantages and shortcommings of bulk wave and guided wave ultrasonic inspection is presented, fundamentals of guided wave propagation and damage detection are reviewed, the reliability of guided wave SHM is discussed and some recent examples of guided wave applications to SHM of aerospace components are given.

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Section: Guided Wave Applications To Shm Of Aerospace Componentsmentioning

confidence: 99%

Ultrasonic Methods

Samaitis

Jasiūnienė

Paćko

et al. 2021

Structural Health Monitoring Damage Detection Systems for Aerospace

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“…Since the employed Lamb waves are usually multi-mode and dispersive, additional methods for generating quasi-pure mode and compensating the dispersion are usually required to improve the performance of Lamb wave phased array systems [17][18][19]. Compared with Lamb waves, the fundamental shear horizontal (SH0) wave is more preferred for phased array systems, since the SH0 wave is totally non-dispersive [20,21]. In recent years, some omnidirectional SH0 wave EMATs [22,23] and piezoelectric transducers [24][25][26][27] were successfully proposed.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, some omnidirectional SH0 wave EMATs [22,23] and piezoelectric transducers [24][25][26][27] were successfully proposed. Huan et al [21] employed omnidirectional SH0 wave piezoelectric transducer phased array to achieve better detection sensitivity than Lamb wave array systems in plates. Note that the focusing methods mentioned above are usually referred to as synthetic focusing, which achieves synthetic focusing by signal processing in a post-procedure.…”

Section: Introductionmentioning

confidence: 99%

A circumferential SH wave piezoelectric transducer array for damage detection in large-diameter pipes

Kan

Kang

et al. 2022

J. Phys.: Conf. Ser.

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Torsional or longitudinal wave-based inspection is an effective method for rapid defect screening in pipes, but it has difficulty to locate the circumferential position of a defect due to the axially symmetric properties of torsional and longitudinal modes. In order to overcome this problem, several flexural-wave-based focusing methods have been proposed while multiple mode propagation associated with dispersion has to be taken into account in them, which increases the complexity of identifying defects in practical applications. In this work, based on our recently developed bidirectional SH wave piezoelectric transducer (BSH-PT), a fundamental circumferential shear horizontal (CSH0) wave linear phased array was proposed for in-situ defect localization in large-diameter pipes. Firstly, the working principle of the BSH-PT array was presented and its performance on defects detection was assessed by simulations using the total focusing method (TFM). Then, experiments were conducted to examine the array’s performance. Results showed that the proposed BSH-PT array can detect multiple defects simultaneously at varied frequencies. Finally, a method for eliminating the mirrored artifact was proposed and then validated by both simulations and experiments on pipes. Considering the quasi-nondispersive character of CSH0 wave and the desirable performance of the BSH-PT on exciting and receiving pure CSH0 wave, the proposed CSH0 wave phased array may be useful in structural health monitoring (SHM) of large-diameter pipes such as pressure vessels and oil tanks.

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“…Wang et al [5] presented a Lamb wave and linear piezoelectric lead zirconate titanate (PZT) array-based monitoring method for the detection and quantification of crack damage on a T6061 aluminum plate. Huan et al [6] proposed an SH0 wave linear array SHM system which can detect a through-thickness hole as small as 2 mm of a plate. Tian et al [7] configured a compact linear fiber Bragg grating phased array and implemented an adaptive phased array algorithm which can precisely locate damage in plates.…”

Section: Introductionmentioning

confidence: 99%

Environmental Effects on Piezoelectric Sensors Array Signals and a Compensated Damage Imaging Method

et al. 2021

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Piezoelectric sensors array based damage imaging method as a high resolution source localization algorithm is becoming a promising method in structural health monitoring (SHM) technology. However, the environmental variations could affect the gain-phase of array signal. This paper experimentally evaluates the environmental effects on piezoelectric sensors array, and presents a compensated 2D-MUSIC based damage imaging method for composite structures. Firstly, detailed analysis and comparison discussion about the gain-phase difference of array signal when the environmental parameters change, and the gain-phase changes respect to the environmental parameters could be obtained. Secondly, array error matrix is structured and substituted into the steering vector of the original 2D-MUSIC algorithm to compensate. Finally, the compensated 2D-MUSIC algorithm is applied for estimating the initial estimates of damage. After substituting these initial estimates, the cost function is minimized by adaptive iterative calculating the reasonable location of the damage source. The experiments on an epoxy laminate plate demonstrate the validity and effectiveness of the proposed method.

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A high-resolution structural health monitoring system based on SH wave piezoelectric transducers phased array

Cited by 47 publications

References 27 publications

Ultrasonic Methods

Ultrasonic Methods

A circumferential SH wave piezoelectric transducer array for damage detection in large-diameter pipes

Environmental Effects on Piezoelectric Sensors Array Signals and a Compensated Damage Imaging Method

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