Quantitative phase measurement for the damage detection in piezoelectric crystal using angularly placed multiple inter digital transducers

Habib, Anowarul; Ahmad, Azeem; Wagle, Sanat; Ahluwalia, Balpreet Singh; Melandsø, Frank; Tiwari, Anuj; Mehta, Dalip Singh

doi:10.1109/ultsym.2016.7728674

Cited by 2 publications

(3 citation statements)

References 23 publications

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“…The similar concept of SIMO and MIMO holds a promising feature in nondestructive evaluation (NDE) using ultrasonic waves for identification and quantification of microscale damage in piezoelectric sensors [ 7 ]. Ultrasonic guided waves and Rayleigh waves have been extensively used for NDE applications such as mechanical characterization of the thin-film coating, delamination and debonding, and crack detection [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Single-Input and Multiple-Output Surface Acoustic Wave Sensing for Damage Quantification in Piezoelectric Sensors

Pamwani

Habib

Melandsø

et al. 2018

Sensors

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The main aim of the paper is damage detection at the microscale in the anisotropic piezoelectric sensors using surface acoustic waves (SAWs). A novel technique based on the single input and multiple output of Rayleigh waves is proposed to detect the microscale cracks/flaws in the sensor. A convex-shaped interdigital transducer is fabricated for excitation of divergent SAWs in the sensor. An angularly shaped interdigital transducer (IDT) is fabricated at 0 degrees and ±20 degrees for sensing the convex shape evolution of SAWs. A precalibrated damage was introduced in the piezoelectric sensor material using a micro-indenter in the direction perpendicular to the pointing direction of the SAW. Damage detection algorithms based on empirical mode decomposition (EMD) and principal component analysis (PCA) are implemented to quantify the evolution of damage in piezoelectric sensor material. The evolution of the damage was quantified using a proposed condition indicator (CI) based on normalized Euclidean norm of the change in principal angles, corresponding to pristine and damaged states. The CI indicator provides a robust and accurate metric for detection and quantification of damage.

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Section: Introductionmentioning

confidence: 99%

“…Due to the convex geometrical shape of the IDT, the harmonic waves become divergent and cover a maximum area with uniform energy content along the angular direction. Previously, NDE evaluation of IDT sensors using an angularly placed SIMO with parallel IDT receiver has been demonstrated [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Single-Input and Multiple-Output Surface Acoustic Wave Sensing for Damage Quantification in Piezoelectric Sensors

Pamwani

Habib

Melandsø

et al. 2018

Sensors

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“…Currently, the emphasis of SHM techniques is on global and local damage detection using vibration-based techniques [9] and guided wave-based techniques [10]. Guided waves such as Lamb waves and SAW have been explored for detection of surface and subsurface defects/delamination [11][12][13][14]. Recently, highly sensitive strain sensors employing SAW resonator have been developed for SHM applications [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Nonlocal Damage Mechanics for Quantification of Health for Piezoelectric Sensor

et al. 2018

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In this paper, a novel method to quantify the incubation of damage on piezoelectric crystal is presented. An intrinsic length scale parameter obtained from nonlocal field theory is used as a novel measure for quantification of damage precursor. Features such as amplitude decay, attenuation, frequency shifts and higher harmonics of guided waves are commonly-used damage features. Quantification of the precursors to damage by considering the mentioned features in a single framework is a difficult proposition. Therefore, a nonlocal field theory is formulated and a nonlocal damage index is proposed. The underlying idea of the paper is that inception of the damage at the micro scale manifests the evolution of damage at the macro scale. In this paper, we proposed a nonlocal field theory, which can efficiently quantify the inception of damage on piezoelectric crystals. The strength of the method is demonstrated by employing the surface acoustic waves (SAWs) and longitudinal bulk waves in Lithium Niobate (LiNbO3) single crystal. A control damage was introduced and its manifestation was expressed using the intrinsic dominant length scale. The SAWs were excited and detected using interdigital transducers (IDT) for healthy and damage state. The acoustic imaging of microscale damage in piezoelectric crystal was conducted using scanning acoustic microscopy (SAM). The intrinsic damage state was then quantified by overlaying changes in time of flight (TOF) and frequency shift on the angular dispersion relationship.

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Quantitative phase measurement for the damage detection in piezoelectric crystal using angularly placed multiple inter digital transducers

Cited by 2 publications

References 23 publications

Single-Input and Multiple-Output Surface Acoustic Wave Sensing for Damage Quantification in Piezoelectric Sensors

Single-Input and Multiple-Output Surface Acoustic Wave Sensing for Damage Quantification in Piezoelectric Sensors

Nonlocal Damage Mechanics for Quantification of Health for Piezoelectric Sensor

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