Imaging Ultrasonic Sensor System SWISS completed 60.000 simulated flight hours to check structural integrity of aircraft subcomponent

Kress, Klaus-Peter; Baderschneider, Hans J.; Guse, Guenther

doi:10.1117/12.484781

Cited by 3 publications

(2 citation statements)

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“…This technique has been used for damage detection in isotropic structures using a linear array of sensors (Purekar and Pines, 2001;Purekar et al, 2004). The use of sensor arrays as tools for damage detection in structures has shown wide applicability (Kress et al, 2003;Sundararaman et al, 2003;Giurgiutiu and Bao, 2004) A group of sensor signals is consolidated into one signal called the array response where the simplest method of consolidation is to add up the sensor signals:…”

Section: Wavenumber Spectrummentioning

confidence: 99%

Damage Detection in Thin Composite Laminates Using Piezoelectric Phased Sensor Arrays and Guided Lamb Wave Interrogation

Purekar¹,

Pines

2010

Journal of Intelligent Material Systems and Structures

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Damage detection in composite laminated panels using Lamb waves is demonstrated with an innovative use of a sensor array and processing algorithm. Two models were developed to characterize the Lamb wave propagation properties of orthotropic panels. Predictions of the dispersion relations were made for a fiber-reinforced composite laminate. Experiments were conducted to empirically characterize the wave propagation behavior in a manufactured laminate. Piezoelectric patches were used as sensors and actuators in the experiments. Comparisons were made between analytical predictions and experimental results, which demonstrate that the higher order model captured essential wave propagation behavior at frequencies of interest. Sensor arrays and associated processing were used for wavenumber decomposition and filtering of the Lamb wave modes. Composite laminates were manufactured with an embedded defect to simulate inter-ply delamination. Experiments were conducted to detect the presence of delamination damage in a composite laminate.

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Section: Wavenumber Spectrummentioning

confidence: 99%

Damage Detection in Thin Composite Laminates Using Piezoelectric Phased Sensor Arrays and Guided Lamb Wave Interrogation

Purekar¹,

Pines

2010

Journal of Intelligent Material Systems and Structures

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“…Such PZT phased array has been used for damage detection in isotropic structures using a linear array of sensors (Purekar, 2006; Purekar and Pines, 2001; Purekar et al, 2004). The use of sensor arrays as tools for damage detection in structures has shown wide applicability (Giurgiutiu and Bao, 2004; Kress et al, 2003; Ostachowicz et al, 2009; Purekar et al, 2004; Yoo et al, 2011). It must be emphasized that advanced signal processing algorithms are required in order to apply damage detection to such phased array systems.…”

Section: Introductionmentioning

confidence: 99%

Development of PZT fiber rosette to locate acoustic source

Gilbert

Wang

2021

Journal of Intelligent Material Systems and Structures

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Because of their electro-mechanical coupling property, Lead-Zirconate-Titanate (PZT) materials have been widely used for ultrasonic wave sensing and actuation in structural health monitoring applications. In this paper, a PZT rosette concept is proposed to conduct Lamb wave-based damage detection in panel-like structures by exploring its best directional sensing capability. First, a directivity study was conducted to investigate sensing of flexural Lamb wave propagation using a PZT fiber having d33 effects. Then, commercial off-the-shelf PZT fibers were polarized in-house in order to construct the PZT rosette configuration, in which three PZT fibers are oriented at 0°, 45°, 90°, respectively. Since Lamb wave responses are directly related to measured PZT fiber voltage signals, a simple interrogation scheme was developed to calculate principal strain direction in order to locate an acoustic source. Comprehensive tests were conducted to evaluate the performance of the proposed PZT rosette using an aluminum plate. It is shown that the PZT rosette is able to sense Lamb wave responses and accurately locate an acoustic source. We expect to further evaluate the PZT rosette performance when damages are introduced.

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Structural Health Monitoring with Piezoelectric Sensors

Guy

Monnier

2006

Structural Health Monitoring

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Imaging Ultrasonic Sensor System SWISS completed 60.000 simulated flight hours to check structural integrity of aircraft subcomponent

Cited by 3 publications

References 0 publications

Damage Detection in Thin Composite Laminates Using Piezoelectric Phased Sensor Arrays and Guided Lamb Wave Interrogation

Damage Detection in Thin Composite Laminates Using Piezoelectric Phased Sensor Arrays and Guided Lamb Wave Interrogation

Development of PZT fiber rosette to locate acoustic source

Structural Health Monitoring with Piezoelectric Sensors

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