&lt;title&gt;Local-area health monitoring of aircraft via piezoelectric actuator/sensor patches&lt;/title&gt;

Chaudhry, Zaffir; Joseph, Thomas; Sun, Fanping; Rogers, Craig A.

doi:10.1117/12.208264

Cited by 126 publications

(90 citation statements)

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“…The local-area health monitoring of a tail-fuselage aircraft junction was described by Chaudhry et al [1]. Giurgiutiu et al [2] used the E/M impedance method to detect near-field damage in realistic built-up panels representative of aging aircraft structures.…”

Section: Introductionmentioning

confidence: 99%

Damage Detection in Thin Plates and Aerospace Structures with the Electro-Mechanical Impedance Method

Giurgiutiu

Zagrai

2005

Structural Health Monitoring

202

118

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The use of the electro-mechanical (E/M) impedance method for health monitoring of thin plates and aerospace structures is described. As a nondestructive evaluation technology, the E/M impedance method allows us to identify the local dynamics of the structure directly through the E/M impedance signatures of piezoelectric wafer active sensors (PWAS) permanently mounted to the structure. An analytical model for 2-D thin-wall structures, which predicts the E/M impedance response at PWAS terminals, was developed and validated. The model accounts for axial and flexural vibrations of the structure and considers both the structural dynamics and the sensor dynamics. Calibration experiments performed on circular thin plates with centrally attached PWAS showed that the presence of damage modifies the high-frequency E/M impedance spectrum causing frequency shifts, peak splitting, and appearance of new harmonics. Overall-statistics damage metrics and probabilistic neural network (PNN) are used to classify the spectral data and identify damage severity. On thin-wall aircraft panels, the presence of damage influences the sensors E/M impedance spectrum. When crack damage is in the PWAS medium field, changes in the distribution of harmonics take place and when crack damage is in the PWAS near field, changes in both the harmonics and the dereverberated response are observed. These effects are successfully classified with PNN and overall-statistics metrics, respectively. This proves that permanently attached PWAS in conjunction with the E/M impedance method can be successfully used in structural health monitoring to detect the presence of incipient damage through the examination and classification of the high-frequency E/M impedance spectra.

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Section: Introductionmentioning

confidence: 99%

Damage Detection in Thin Plates and Aerospace Structures with the Electro-Mechanical Impedance Method

Giurgiutiu

Zagrai

2005

Structural Health Monitoring

202

118

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“…The E/M impedance method was first used for SHM to detect damage in a truss structure by Sun, et al [47]. It was first shown to have extreme sensitivity to local damage and insensitivity to far-field damage in the tail section of a Piper Model 601P airplane [48]. While much literature exists focusing on implementing the impedance method to detect damage, it will not be mentioned in detail here since this method was not used in this research.…”

Section: Electro-mechanical Impedance Methodsmentioning

confidence: 99%

Design and Analysis of Advanced Materials in a Thermal/Acoustic Environment. Delivery Order 0007: Volume 1 - Structural Health Monitoring

Grandhi¹,

Tobe²

2010

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Defense, Washington Headquarters Services, Directorate for Information , 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YY) REPORT TYPE 3. DATES COVERED (From -To)March 2010 0A PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBERWright State University Department of Mechanical and Materials Engineering Dayton, OH 45435 SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)Air Force Research Laboratory SPONSORING/MONITORING AGENCY ACRONYM(S)Air ABSTRACTAir vehicles flying at hypersonic speeds encounter extreme thermal, aerodynamic and acoustic loads, utilizing thermal protection systems to shield the main structure from these 1oads.One type of failure in a mechanically attached thermal protection system is fastener failure. Determining structural health monitoring on the fastener health of the thermal protection system is needed and can be completed by analyzing changes in the dynamic characteristics of the system due to fastener failure. The damage detection metrics include the existing modal parameters-modal assurance criterion (MAC), partial (PMAC), and coordinate (CMAC)-as well as two new modal parameters-normalized coordinate MAC and normalized coordinate MAC X summation were investigated. Two new modal parameters were formulated to identify mode shape changes in a structure due to global damage to the structure. Two damage states caused a minimal change to the low-frequency structural dynamics and could not be localized with any of the investigated damage metrics. After the finite element model is validated for the healthy state with free-free boundary conditions, the global boundary conditions and fastener failure damage states are implemented. This damage simulation allows a better understanding of how the damage states cause low-frequency dynamic changes without requiring a experimental data for each of the damage states of interest. SUBJECT TERMSThe damage detection metrics include the existing modal parameters-modal assurance criterion, partial modal assurance criterion, and coordinate modal assurance criterion-as well as two new modal parameters-normalized coordinate modal assurance criterion and normalized coordinate modal assurance criterion summation. The existing modal parameters provide data...

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“…By comparing the impedance signature taken in the pristine state and at any other time, structural damage can be determined. Generally, both frequency and amplitude shifts are produced relative to the pristine state (without damage) (Ayres et al, 1998;Chaudhry et al, 1995;Sun et al, 1995;Park et al, 2000;Zagrai and Giurgiutiu, 2001;Giurgiutiu et al, 2002Giurgiutiu et al, , 2004Peairs et al, 2004;Narayanan and Subramaniam, 2016a). Application of EMI technique for damage detection in concrete structures requires a careful study of the changing compliance of the substrate for different forms of damage in the substrate material from the incipient to the visible stages.…”

Section: Introductionmentioning

confidence: 99%

Damage assessment in concrete structures using piezoelectric based sensors

Narayanan¹,

Subramaniam²

2017

Revista de la Asociación Latinoamericana de Control de Calidad,

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Piezoelectric based PZT (Lead Zirconate Titanate) smart sensors offer significant potential for continuously monitoring the development and progression of internal damage in concrete structures. Changes in the resonant behavior in the measured electrical conductance obtained from electromechanical (EM) response of a PZT bonded to a concrete substrate is investigated for increasing levels of damage. Changes in the conductance resonant signature from EM conductance measurements are detected before visible signs of cracking. The root mean square deviation of the conductance signature at resonant peaks is shown to accurately reflect the level of damage in the substrate. The findings presented here provide a basis for developing a sensing methodology using PZT patches for continuous monitoring of concrete structures. Keywords: PZT; electro-mechanical impedance; conductance; microcracks. Legal InformationRevista ALCONPAT is a quarterly publication of the Latinamerican Association of quality control, pathology and recovery of construction-International, A.C.; Km. 6, Antigua carretera a Progreso, Mérida, Yucatán, C.P. 97310, Tel.5219997385893. E-mail: revistaalconpat@gmail.com, Website: www.revistaalconpat.org. Editor: Dr. Pedro Castro Borges. Reservation of rights to exclusive use No. 04-201304- -011717330300-203, eISSN 2007 awarded by the National Institute of Copyright. Responsible for the latest update on this number, ALCONPAT Informatics Unit, Eng. Elizabeth Maldonado Sabido, Km. 6, Antigua carretera a Progreso, Mérida, Yucatán, C.P. 97310. The views expressed by the authors do not necessarily reflect the views of the publisher. The total or partial reproduction of the contents and images of the publication without prior permission from ALCONPAT International A. C. is not allowed. Any discussion, including authors reply, will be published on the first number of 2018 if received before closing the third number of 2017.Revista ALCONPAT, 7 (1), 2017: 25 -35 Damage assessment in concrete structures using piezoelectric based sensors A. Narayanan, K. V. L. Subramaniam 26 Evaluación de daños en estructuras de concreto utilizando sensores piezoeléctricos RESUMENLos sensores inteligentes PZT (Lead Zirconate Titanate) basados en piezoeléctricos ofrecen un potencial significativo para monitorear continuamente el desarrollo y la progresión de los daños internos en estructuras de concreto. Se investigan los cambios en el comportamiento resonante a través de la conductancia eléctrica medida, obtenida a partir de la respuesta electromecánica (EM) de un PZT unido a un sustrato de concreto para aumentar los niveles de daño. Los cambios en la resonancia de la conductancia EM se detectan antes de que aparezcan signos visibles de agrietamiento. La desviación cuadrática media de la raíz de la conductancia en los picos resonantes refleja con precisión el nivel de daño en el sustrato. Los hallazgos presentados aquí proporcionan una base para desarrollar una metodología de detección utilizando parches PZT para el monitoreo con...

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<title>Local-area health monitoring of aircraft via piezoelectric actuator/sensor patches</title>

Cited by 126 publications

References 0 publications

Damage Detection in Thin Plates and Aerospace Structures with the Electro-Mechanical Impedance Method

Damage Detection in Thin Plates and Aerospace Structures with the Electro-Mechanical Impedance Method

Design and Analysis of Advanced Materials in a Thermal/Acoustic Environment. Delivery Order 0007: Volume 1 - Structural Health Monitoring

Damage assessment in concrete structures using piezoelectric based sensors

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