On the Optimization of Temperature Compensation for Guided Wave Structural Health Monitoring

Lu, Zhong-Rong; Lee, Sang Jun; Michaels, Jennifer E.; Michaels, Thomas E.; Thompson, Donald O.; Chimenti, Dale E.

doi:10.1063/1.3362320

Cited by 19 publications

(19 citation statements)

References 7 publications

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“…Lu et al [19] (2010) optimized the OBS method to effectively compensate for temperature effects in short time windows and low sampling rates, and the damage detection performance was also significantly improved. Harley et al [20] (2012) developed a new model drive and scale transformation based on OBS method, which can significantly improve computational efficiency and can be used for temperature compensation at sensor arrays and compensation of non-uniform temperature fields.…”

Section: Introductionmentioning

confidence: 99%

A Reference Matching-Based Temperature Compensation Method for Ultrasonic Guided Wave Signals

Wang

Sun

et al. 2019

Sensors

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The ultrasonic guided wave-based structural damage diagnosis method has broad application prospects in different fields. However, some environmental factors such as temperature and loads will significantly affect the monitoring results. In this paper, a reference matching-based temperature compensation for ultrasonic guided wave signals is proposed to eliminate the effect of temperature. Firstly, the guided wave signals measured at different temperatures are used as reference signals to establish the relationship between the features of the reference signals and temperature. Then the matching algorithm based on Gabor function is used to establish the relationship between the amplitude influence coefficient obtained by the reference signal and the corresponding temperature. Finally, through these two relationships, the values of the phase and amplitude influence coefficients of the guided wave signals at other temperatures are obtained in a way of interpolation in order to reconstruct the compensation signals at the temperature. The effect of temperature on the amplitude and phase of the guided wave signal is eliminated. The proposed temperature compensation method is featured such that the compensation performance can be improved by multiple iteration compensation of the residual signal. The ultrasonic guided wave test results at different temperatures show that the first iterative compensation of the proposed method can achieve compensation within the temperature range greater than 7 °C, and the compensation within the temperature range greater than 18 °C can be achieved after three iterations.

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Section: Introductionmentioning

confidence: 99%

A Reference Matching-Based Temperature Compensation Method for Ultrasonic Guided Wave Signals

Wang

Sun

et al. 2019

Sensors

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“…The guided-waves apart from being sensitive to structural changes are also influenced by variations in ambient temperature and loading conditions which, if not addressed, will make it difficult to interpret and monitor the health of a structure from in-situ sensor data, leading to false diagnostics and prognostics. Several strategies in literature for compensating the influence of change in ambient temperature on ultrasonic guide-waves do exist [1][2][3][4][5] that primarily require a set of baseline sensor measurements under different temperature environments. However, very little research has been carried out to develop load compensation models for ultrasonic guided waves based SHM using piezoelectric transducers.…”

Section: Introductionmentioning

confidence: 99%

Load monitoring and compensation strategies for guided-waves based structural health monitoring using piezoelectric transducers

Roy

Ladpli

Chang

2015

Journal of Sound and Vibration

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“…In this technique, all modes of all propagating directions and frequencies are excited with random amplitudes that are independent of each other and random phases that are uniformly distributed . Michaels and co‐authors exploited diffuse ultrasonic waves and local temporal coherence to discriminate damage from temperature changes in plate‐like structures . Lu and Michaels studied the effect of surface wetting on highly reverberating diffuse‐like ultrasonic waves in plates.…”

Section: Introductionmentioning

confidence: 99%

Guided waves for the health monitoring of sign support structures under varying environmental conditions

Zhu

Rizzo

2011

Struct. Control Health Monit.

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Guided ultrasonic waves are increasingly used in all those structural health monitoring applications that benefit from built-in transduction, moderately large inspection ranges, and high sensitivity to small flaws. The wavebased structural health monitoring of complex or thick structures can be difficult because of factors such as simultaneous propagation of many modes, large number of overlapping reflections, and mode conversion. Moreover, if the structures are subjected to environmental changes, variations on the characteristics of the detected signals are observed. This paper describes a health monitoring system for large trusses that combines the advantages of guided ultrasonic waves with the extraction of defect-sensitive features aimed at performing a multivariate diagnosis of damage. The system was tested on a chord of a dismantled overhead sign support structure subjected to changing environmental conditions. Cold/warm temperatures and wet/snow boundary conditions were created. The system's hardware consisted of a data acquisition unit that controlled the generation and detection of ultrasonic signals by means of an array of piezoelectric transducers. The signals were processed using a feature-based approach whereby features between two signals collected simultaneously or between a signal and a baseline were compared. The features were then fed into an unsupervised learning algorithm based on outlier analysis. Experimental results show that damage can be detected even in the presence of temperature and boundary condition variations.

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On the Optimization of Temperature Compensation for Guided Wave Structural Health Monitoring

Cited by 19 publications

References 7 publications

A Reference Matching-Based Temperature Compensation Method for Ultrasonic Guided Wave Signals

A Reference Matching-Based Temperature Compensation Method for Ultrasonic Guided Wave Signals

Load monitoring and compensation strategies for guided-waves based structural health monitoring using piezoelectric transducers

Guided waves for the health monitoring of sign support structures under varying environmental conditions

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