Relevant bibliographies by topics / Debonding detection

Academic literature on the topic 'Debonding detection'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Debonding detection"

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Zima, Beata. "Guided Wave Propagation in Detection of Partial Circumferential Debonding in Concrete Structures." Sensors 19, no. 9 (May 13, 2019): 2199. http://dx.doi.org/10.3390/s19092199.

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The following article presents results of investigating the damage detection in reinforced concrete beams with artificially introduced debonding between the rod and cover, using a non-destructive method based on elastic waves propagation. The primary aim of the research was to analyze the possible use of guided waves in partial circumferential debonding detection. Guided waves were excited and registered in reinforced concrete specimens with varying extents of debonding damage by piezoelectric sensors attached at both ends of the beams. Experimental results in the form of time–domain signals registered for variable extent of debonding were compared, and the relationships relating to the damage size and time of flight and average wave velocity were proposed. The experimental results were compared with theoretical predictions based on dispersion curves traced for the free rod of circular cross-section and rectangular reinforced concrete cross-section. The high agreement of theoretical and experimental data proved that the proposed method, taking advantage of average wave velocity, can be efficiently used for assessing debonding size in reinforced concrete structures. It was shown that the development of damage size in circumferential direction has a completely different impact on wave velocity than development of debonding length. The article contains a continuation of work previously conducted on the detection of delamination in concrete structures. The proposed relationship is the next essential step for developing a diagnostics method for detecting debondings of any size and orientation.
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Liu, Shukui, Wei Sun, Hongwen Jing, and Zhaoxing Dong. "Debonding Detection and Monitoring for CFRP Reinforced Concrete Beams Using Pizeoceramic Sensors." Materials 12, no. 13 (July 4, 2019): 2150. http://dx.doi.org/10.3390/ma12132150.

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The bonding status between Carbon Fiber Reinforced Polymer (CFRP) and concrete is one of the key issues for the safety of CFPR-reinforced structures, thus it is of great importance to detect the debonding as early as possible. Instead of detecting the debonding which is artificially set at the very beginning, this paper investigates the feasibility of using low-cost piezoceramic sensors to detect and monitor the debonding of CFRP-reinforced concrete beams in situ. For existing debonding detection, a concrete beam reinforced with CFRP sheet was loaded through the three-point bending test till failure to induce debonding between CFRP sheet and the concrete substrate, and piezoceramic sensors were used to detect the existing debonding by analyzing the receiving ultrasonic waves. In addition, the debonding detection results were further compared with and verified by the vision-based strain testing results. For in-situ debonding monitoring, 10 piezoceramic sensors were used as an array to track the wave transmission changes during the loading process of a CFRP-reinforced concrete beam, and the debonding development process was successfully monitored. The test results show that the low-cost piezoceramic sensors are very effective to generate and receive ultrasonic waves, and are capable of detecting the existing debonding and monitoring of the in-situ debonding process as well.
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Ng, Ching Tai, and Martin Veidt. "Prediction and Measurement of Lamb Wave from Debondings at Structural Features in Composite Laminates." Key Engineering Materials 558 (June 2013): 139–48. http://dx.doi.org/10.4028/www.scientific.net/kem.558.139.

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The interaction of the fundamental anti-symmetric Lamb wave (A0) with debondings at structural features is investigated using experimental data and finite element (FE) simulations. In this study explicit three-dimensional (3D) FE simulations are employed, which allows the study of the scattered wave along different propagation directions. Good agreement between the FE predictions and the measurements are obtained that demonstrates that the 3D FE scattering model is able to accurately predict the Lamb wave scattering characteristics at debondings. The study show that the characteristics of Lamb wave reflected from the debondings at the structure feature is much more complicated than that from defects in flat composite laminates. Parameter studies show that the backward and forward scattering coefficient of Lamb wave is a function of debonding size to wavelength ratio and debonding location. This shows the potential of employing Lamb wave to identify the size and monitor the growth of the debondings. The findings of the study provide improved physical insights into the scattering phenomena, which are important to further advance damage detection techniques for complex structures made by composite laminates.
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Sorrentino, Assunta, Fulvio Romano, and Angelo De Fenza. "Advanced debonding detection technique for aerospace composite structures." Aircraft Engineering and Aerospace Technology 93, no. 6 (July 19, 2021): 1011–17. http://dx.doi.org/10.1108/aeat-10-2020-0222.

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Purpose The purpose of this paper is to introduce a methodology aimed to detect debonding induced by low impacts energies in typical aeronautical structures. The methodology is based on high frequency sensors/actuators system simulation and the application of elliptical triangulation (ET) and probability ellipse (PE) methods as damage detector. Numerical and experimental results on small-scale stiffened panels made of carbon fiber-reinforced plastic material are discussed. Design/methodology/approach The damage detection methodology is based on high frequency sensors/actuators piezoceramics system enabling the ET and the PE methods. The approach is based on ultrasonic guided waves propagation measurement and simulation within the structure and perturbations induced by debonding or impact damage that affect the signal characteristics. Findings The work is focused on debonding detection via test and simulations and calculation of damage indexes (DIs). The ET and PE methodologies have demonstrated the link between the DIs and debonding enabling the identification of position and growth of the damage. Originality/value The debonding between two structural elements caused in manufacturing or in-service is very difficult to detect, especially when the components are in low accessibility areas. This criticality, together with the uncertainty of long-term adhesive performance and the inability to continuously assess the debonding condition, induces the aircrafts’ manufacturers to pursuit ultraconservative design approach, with in turn an increment in final weight of these parts. The aim of this research’s activity is to demonstrate the effectiveness of the proposed methodology and the robustness of the structural health monitoring system to detect debonding in a typical aeronautical structural joint.
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Yu, Lingyu, Zhenhua Tian, Xiaopeng Li, Rui Zhu, and Guoliang Huang. "Core–skin debonding detection in honeycomb sandwich structures through guided wave wavefield analysis." Journal of Intelligent Material Systems and Structures 30, no. 9 (February 27, 2018): 1306–17. http://dx.doi.org/10.1177/1045389x18758180.

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Ultrasonic guided waves have proven to be an effective and efficient method for damage detection and quantification in various plate-like structures. In honeycomb sandwich structures, wave propagation and interaction with typical defects such as hidden debonding damage are complicated; hence, the detection of defects using guided waves remains a challenging problem. The work presented in this article investigates the interaction of low-frequency guided waves with core–skin debonding damage in aluminum core honeycomb sandwich structures using finite element simulations. Due to debonding damage, the waves propagating in the debonded skin panel change to fundamental antisymmetric Lamb waves with different wavenumber values. Exploiting this mechanism, experimental inspection using a non-contact laser Doppler vibrometer was performed to acquire wavefield data from pristine and debonded structures. The data were then processed and analyzed with two wavefield data–based imaging approaches, the filter reconstruction imaging and the spatial wavenumber imaging. Both approaches can clearly indicate the presence, location, and size of the debonding in the structures, thus proving to be effective methods for debonding detection and quantification for honeycomb sandwich structures.
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Yan, Banfu, Qiqi Zou, You Dong, and Xudong Shao. "Application of PZT Technology and Clustering Algorithm for Debonding Detection of Steel-UHPC Composite Slabs." Sensors 18, no. 9 (September 5, 2018): 2953. http://dx.doi.org/10.3390/s18092953.

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A lightweight composite bridge deck system composed of steel orthotropic deck stiffened with thin Ultra-High Performance Concrete (UHPC) layer has been proposed to eliminate fatigue cracks in orthotropic steel decks. The debonding between steel deck and UHPC layer may be introduced during construction and operation phases, which could cause adverse consequences, such as crack-induced water invasion and distinct reduction of the shear resistance. The piezoelectric lead zirconate titanate (PZT)-based technologies are used to detect interfacial debonding defects between the steel deck and the UHPC layer. Both impedance analysis and wave propagation method are employed to extract debonding features of the steel-UHPC composite slab with debonding defect in different sizes and thicknesses. Experimental tests are performed on two steel-UHPC composite slabs and a conventional steel-concrete composite deck. Additionally, an improved Particle Swarm Optimization (PSO)-k-means clustering algorithm is adopted to obtain debonding patterns based on the feature data set. The laboratory tests demonstrate that the proposed approach provides an effective way to detect interfacial debonding of steel-UHPC composite deck.
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Chen, Hongbing, Bin Xu, Jiang Wang, Lele Luan, Tianmin Zhou, Xin Nie, and Yi-Lung Mo. "Interfacial Debonding Detection for Rectangular CFST Using the MASW Method and Its Physical Mechanism Analysis at the Meso-Level." Sensors 19, no. 12 (June 20, 2019): 2778. http://dx.doi.org/10.3390/s19122778.

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In this study, the transient multichannel analysis of surface waves (MASW) is proposed to detect the existence, the location and the length of interface debonding defects in rectangular concrete-filled steel tubes (CFST). Mesoscale numerical analysis is performed to validate the feasibility of MASW-based interfacial debonding detection. Research findings indicate that the coaxial characteristics in the Rayleigh wave disperse at the starting point of the debonding area and gradually restores at the end of the defect. For healthy specimens, the surface wave mode in CFST is closer to the Rayleigh wave. However, it can be treated as a Lamb wave since the steel plate is boundary-free on both sides in the debonding area. The displacement curves are further investigated with forward analysis to obtain the dispersion curves. The mesoscale numerical simulation results indicate that the propagation characteristic of the surface wave is dominated by the debonding defect. The detectability of interfacial debonding detection for rectangular CFST using the MASW approach is numerically verified in this study. The proposed MASW-based nondestructive testing technique can achieve bond-slip detection by comparing the variation trend of the coaxial characteristics in the time-history output signals and the dispersion curves obtained from the forward analysis, for avoiding misjudgment of the experimental observations.
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Tang, Qingju, Shuaishuai Gao, Yongjie Liu, Yumei Lu, and Peng Xu. "Experimental research on YSZ TBC structure debonding defect detection using long-pulsed excitation of infrared thermal wave non-destructive testing." Thermal Science 23, no. 3 Part A (2019): 1313–21. http://dx.doi.org/10.2298/tsci180513128t.

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Thermal barrier coating structure components are prone to coating cracking, debonding and peeling defects in the service process, which affects the work safety and reliability of the hot end parts, even result to catastrophic consequences. Experimental research on Yttria-stabilized zirconia thermal barrier coating structure debonding defect detection has been conducted using long-pulsed excitation of infrared wave non-destructive testing technology. Differences between surface temperature signals of sound and defective regions, detection effect comparison of heating and cooling process, detection effect comparison of different defect preparation methods, and impact of inspection parameters on detection effect were studied and discussed. The research conclusions will provide technical guidance to Yttria-stabilized zirconia thermal barrier coating structure debonding defects using long-pulsed excitation of infrared wave non-destructive testing technology
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Mohseni, Hasan, and Ching-Tai Ng. "Rayleigh wave propagation and scattering characteristics at debondings in fibre-reinforced polymer-retrofitted concrete structures." Structural Health Monitoring 18, no. 1 (January 30, 2018): 303–17. http://dx.doi.org/10.1177/1475921718754371.

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Structural health monitoring is of paramount importance to ensure safety and serviceability of structures. Among different damage detection techniques, guided wave–based approach has been the subject of intensive research activities. This article investigates the capability of Rayleigh wave for debonding detection in fibre-reinforced polymer-retrofitted concrete structures through studying wave scattering phenomenon at debonding between fibre-reinforced polymer and concrete. A three-dimensional finite element model is presented to simulate Rayleigh wave propagation and scattering at the debonding. Numerical simulations of Rayleigh wave propagation are validated with analytical solutions. Absorbing layers by increasing damping is employed in the fibre-reinforced polymer-retrofitted concrete numerical model to maximise computational efficiency in the scattering study. Experimental measurements are also carried out using a three-dimensional laser Doppler vibrometer to validate the three-dimensional finite element model. Very good agreement is observed between the numerical and experimental results. The experimentally and analytically validated finite element model is then used in numerical case studies to investigate the wave scattering characteristic at the debonding. The study investigates the directivity patterns of scattered Rayleigh waves, in both backward and forward directions, with respect to different debonding size-to-wavelength ratios. This study also investigates the suitability of using bonded mass to simulate debonding in the fibre-reinforced polymer-retrofitted concrete structures. By enhancing physical understanding of Rayleigh wave scattering at the debonding between fibre-reinforced polymer/concrete interfaces, this study can lead to further advance of Rayleigh wave–based damage detection techniques.
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Li, Weijie, Shuli Fan, Siu Chun Michael Ho, Jianchao Wu, and Gangbing Song. "Interfacial debonding detection in fiber-reinforced polymer rebar–reinforced concrete using electro-mechanical impedance technique." Structural Health Monitoring 17, no. 3 (May 8, 2017): 461–71. http://dx.doi.org/10.1177/1475921717703053.

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For reinforced concrete structures, the use of fiber-reinforced polymer rebars to replace the steel reinforcement is a topic that is receiving increasing attention, especially where corrosion is a serious issue. However, fiber-reinforced polymer rebar–reinforced concrete always carries the risk of structural failure initiated from the debonding damage that might occur at the reinforcement–concrete interface. This study employed an electro-mechanical impedance–based structural health monitoring technique by applying lead–zirconate–titanate ceramic patches to detect the debonding damage of a carbon fiber–reinforced polymer rebar reinforced concrete. In the experimental study, a carbon fiber–reinforced polymer rebar reinforced concrete specimen was fabricated and it was subjected to a pullout test to initiate the debonding damage at the reinforcement–concrete interface. The impedance and admittance signatures were measured from an impedance analyzer according to the different debonding conditions between the reinforcement and the concrete. Statistical damage metrics, root-mean-square deviation and mean absolute percentage deviation, were used to quantify the changes in impedance signatures measured at the lead–zirconate–titanate patches due to debonding conditions. The results illustrated the capability of the electro-mechanical impedance–based structural health monitoring technique for detecting the debonding damage of fiber-reinforced polymer rebar–reinforced concrete structures.
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Dissertations / Theses on the topic "Debonding detection"

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Béchet, Antoine. "Ultrasonic detection of debonding within a gradient enhanced piezoelectric actuator (GEPAC)." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/17914.

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Beattie, P. "The effect of debonding in fibre-reinforced composites on ultrasonic backscattering." Thesis, University of Surrey, 1992. http://epubs.surrey.ac.uk/843471/.

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The work presented in this thesis concerns the problem of detecting and characterising the effect of fibre-matrix debonds in a fibre-reinforced composite, on ultrasonic backscattering. Theoretical and experimental investigations were conducted into this problem. Three mathematical models were examined. The first assumed that the debond was a thin crack with non-contacting faces surrounding the fibre. The second modelled the debond by allowing tangential slip between the matrix and fibre defined by an effective shear modulus, K. For the third model, the debond was approximated by a thin visco-elastic layer separating the matrix and fibre. The results of the modelling suggested that for an incident longitudinal wave, the first model acts as an air-filled void with a sharp resonance present in the low ka region. The second and third models both show the backscattering to be attenuated. Experimental investigations were carried out on scale models of a single fibre embedded in an araldite matrix. Steel or copper wires were used for the reinforcing fibre. The agreement between theory and experiment for a well-bonded wire was excellent. The effect on the longitudinal backscattered wave of the wire immediately after debonding was to attenuate heavily the resonances in the backscatter form function. However, after approximately an hour the scatter is seen to relax, closely resembling that from a well-bonded wire. In view of the only partial ability of longitudinal incident waves to detect debonds, shear wave (SH) incidence was investigated. It was shown that shear waves were far more sensitive to the presence of fibre-matrix debonds.
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Pineda, Allen Juan Carlos. "Guided wave mixing for damage detection in structural elements." Thesis, 2022. https://hdl.handle.net/2440/135490.

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Thin-walled components are fundamental to numerous civil structures such as bridges, buildings, storage vessels, pipes, and becoming progressively diverse with their use in wind turbines, aircrafts and shipbuilding. Identification and evaluation of damage in such structures plays a significant role in the early stage of the project conception, given that safety, performance and maintenance costs are three fundamental concepts in any engineering design. Structural Health Monitoring (SHM) was originated with collaboration across many disciplines to address a variety of structural issues and prevent dramatic losses. Nonlinear guided waves combines the benefits of nonlinear ultrasound and guided waves. By means of linear parameters such as wave reflection, attenuation and transition, wave velocity, or wave modes, linear guided waves cannot detect microscale damage such as early stage fatigue, corrosion, micro-crack, or microdelamination. In contrast, nonlinear guided wave have resulted promising due to incipient damage detection capabilities and reference-free potential, and leveraged its advantages over linear guided waves. This thesis investigates the use of nonlinear guided waves via a wave-mixing approach, where two ultrasonic frequencies are used, and the spectral content of the response is expected to carry information of the damage. This thesis provides a physical insight into the wave-mixing technique for damage detection in structures. The phenomenon is investigated theoretically, numerically and through laboratory experiments. A number of published and prepared journal papers under the same topic is included in this thesis. In Chapter 1, an overview of the general concepts of Structural Health Monitoring and connected non-destructive testing techniques are introduced along with nonlinear guided wave techniques. A theoretical derivation to correlate the contact effect on a steel bolted joint with the spectral content of a signal response is proposed in Chapter 2. Thorough experiments were carried out and demonstrated the robustness of the technique. Following, in Chapter 3, identification of debonding type of damage in adhesively bonded joints is investigated through three-dimensional finite element simulations and experiments. Numerical and experimental results revealed that guided wave-mixing technique could effectively detect debonding damage. To further extend the advantages of guided wave-mixing for different materials, a composite laminate plate in studied in Chapter 4. In this study, an imaging technique relying of the combined frequency wave is proposed to identify delamination and locate the defect. The proposed approach relies on network of few transducers and does not require reference data from undamaged samples. Lastly, a short study is presented in Chapter 5, where noncollinear pulses of finite time duration and non-planar wave-front are able to generate a resonant wave that is able to measure material nonlinearity, which is subject of study for many early stage fatigue damage detection techniques. Overall, this thesis systematically revealed and capitalized the advantages of nonlinear guided wave-mixing technique for various types of damage in structures across a wide variety of materials.
Thesis (Ph.D.) -- University of Adelaide, School of Civil, Environmental & Mining Engineering, 2022
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Hsieh, Chia–Tsung, and 謝嘉聰. "Detecting debonding flaws at the epoxy-concrete interface and evaluating deterioration under outdoor exposure condition of near-surface mounted CFRP strengthening beams using the Impact-echo method." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/53ygyv.

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博士
國立中興大學
土木工程學系所
104
This thesis discusses the feasibility of using the impact–echo method (IE method) to evaluate the debonding flaws at the epoxy–concrete interfaces and the deterioration under outdoor exposure conditions of near-surface mounted carbon fiber reinforced polymer (NSM CFRP) strengthening beams. To clarify the characteristics of the stress wave propagation caused by impact forces on NSM CFRP structures, both numerical and experimental studies were performed on the bar-like epoxy specimens with and without CFRP bars and NSM CFRP strengthening beams with various debonding statuses at the epoxy–concrete surfaces. The numerical analysis revealed that the impact responses in the bar-like epoxy specimens with and without CFRP bars were initiated by the first few cross-sectional vibration modes, and the IE test verified this result. The numerical analysis and experimental study indicated that for NSM CFRP strengthening beams without debonding flaws, the impact response spectra each featured one high-amplitude peak at the fundamental mode frequency, referred to as the dominant frequency. When debonding occurred at the epoxy–concrete interfaces of NSM CFRP strengthening beams, the impact responses revealed that the dominant frequencies decreased significantly. When the dominant frequencies instead increased to levels nearly equal to those of the fundamental frequencies of the bar-like epoxy specimens, the epoxy thoroughly debonded from the concrete interfaces. Finally, the strengthening surfaces of the NSM CFRP strengthening beams were exposed to outdoor environments; IE and loading tests were conducted when the beams were exposed to the outdoor environment for 4, 8, 12, and 48 months. The result indicated that prolonged outdoor exposure generated the debonding flaws at the epoxy–concrete interfaces, which caused a significant decrease in the dominant frequencies of the IE spectra. The loading test result revealed a decrease in the load-carrying capacity due to debonding damages at the epoxy–concrete interfaces. According to the characteristics of the aforementioned impact responses, the IE method is capable of detecting the debonding flaws at epoxy–concrete interfaces and can evaluate the deterioration of the NSM CFRP strengthening beams under prolonged outdoor exposure.
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Book chapters on the topic "Debonding detection"

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Hartingsveldt, E. A. A. van. "Detection of Interfacial Debonding in Particle- Reinforced Composites." In Polymer Composites, edited by Blahoslav Sedlácek, 569–74. Berlin, Boston: De Gruyter, 1986. http://dx.doi.org/10.1515/9783110856934-054.

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Li, Jingrong, and Ye Lu. "Guided Wave Based Debonding Detection in CFRP-Reinforced Steel Structures." In Advances in Asset Management and Condition Monitoring, 1013–21. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57745-2_84.

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Büyüköztürk, O., R. Haupt, C. Tuakta, and J. Chen. "Remote Detection of Debonding in FRP-strengthened Concrete Structures Using Acoustic-Laser Technique." In Nondestructive Testing of Materials and Structures, 19–24. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0723-8_2.

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Zima, Beata. "Debonding Detection in Reinforced Concrete Beams with the Use of Guided Wave Propagation." In Lecture Notes in Mechanical Engineering, 487–97. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8331-1_35.

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Rhim, Hong C., Sang Kyun Woo, and Young Chul Song. "Detection of Debonding in Concrete Members Retrofitted with FRP Using Electromagnetic and Ultrasonic Methods." In Advanced Nondestructive Evaluation I, 390–93. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-412-x.390.

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Zhou, Shiyuan, Xiaoying Sun, Yongxin Yu, Minghua Zhao, Quanpeng Yu, and Zhengyong Li. "Detection of Interface Debonding Defects Based on Principal Component Analysis of Multiple Energy Features and K-Means Clustering Analysis." In Proceedings of the Eighth Asia International Symposium on Mechatronics, 1999–2013. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1309-9_189.

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Celaya, M., F. S. Ertem, S. Nazarian, and M. Saltan. "Feasibility of Detecting Debonding of Hot Mix Asphalt Layer with Nondestructive Testing." In Nondestructive Testing of Materials and Structures, 877–81. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0723-8_125.

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"Detection of debonding defect in CFRP reinforced concrete using infrared thermal imaging." In Manufacturing Engineering and Intelligent Materials, 171–76. CRC Press, 2015. http://dx.doi.org/10.1201/b18620-28.

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Simonin, J.-M., V. Baltazart, P. Hornych, J.-P. Kerzrého, X. Dérobert, S. Trichet, O. Durand, J. Alexandre, and A. Joubert. "Detection of debonding and vertical cracks with non destructive techniques during accelerated pavement testing." In Advances in Pavement Design through Full-scale Accelerated Pavement Testing, 121–31. CRC Press, 2012. http://dx.doi.org/10.1201/b13000-19.

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Verstrynge, E., K. Van Balen, M. Wevers, B. Ghiassi, and D. Oliveira. "Detection and localization of debonding damage in composite-masonry strengthening systems with the Acoustic Emission technique." In Emerging Technologies in Non-Destructive Testing VI, 511–17. CRC Press, 2015. http://dx.doi.org/10.1201/b19381-84.

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Conference papers on the topic "Debonding detection"

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Monteiro, J., F. Santos, J. Chousal, M. Vaz, and J. F. Silva Gomes. "A Michelson Type of Shear Interferometer for Non Destructive Inspection of Debondings in Structures." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p0825.

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Abstract This paper presents some results of an inspection program to detect coating-substract defects using a Michelson type of shear interferometer. Debonding defects are detected by properly loading the surface of the specimen in such a way that the interference fringe pattern is modified, rendering the debond readily visible. Image processing techniques are applied to enhance the detection and better define the debonding geometry. Load conditions, leading to a better detection of debondings, are also discussed. The technique allows to obtain information over a large area of the tested part, with a resolution one hundred of the wavelength of the light being used.
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GALASSO, BERNARDINO, MONICA CIMINELLO, FRANCESCA MARIA PISANO, and ANTONIO CONCILIO. "Statistical Based Features Vector for Skin-stringer Debonding Detection." In Structural Health Monitoring 2017. Lancaster, PA: DEStech Publications, Inc., 2017. http://dx.doi.org/10.12783/shm2017/13896.

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Mohseni, H., and C. T. Ng. "Guided wave for debonding detection in FRP-retrofitted concrete structures." In International Conference on Performance-based and Life-cycle Structural Engineering. School of Civil Engineering, The University of Queensland, 2015. http://dx.doi.org/10.14264/uql.2016.915.

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Yuan, Ling, Yi-ping Cui, Zhujun Gu, Zhong-hua Shen, and Xiao-wu Ni. "The numerical simulation of laser-generated ultrasound to detect the debonding in the honeycomb sandwich board." In International Symposium on Photoelectronic Detection and Imaging 2011. SPIE, 2011. http://dx.doi.org/10.1117/12.901027.

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LIU, SHUKUI, JINYING ZHU, and HONGWEN JING. "CFRP-Concrete Debonding Detection and Monitoring using Low Cost Piezoceramic Sensors." In Structural Health Monitoring 2017. Lancaster, PA: DEStech Publications, Inc., 2017. http://dx.doi.org/10.12783/shm2017/14107.

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Anderson, Neil L., Evgeniy Torgashov, and Oleg Kovin. "Ground Penetrating Radar: Utility/Rebar/Cable Detection and Concrete/Subgrade Debonding." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010. Environment and Engineering Geophysical Society, 2010. http://dx.doi.org/10.4133/1.3445546.

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L. Anderson, Neil, Evgeniy Torgashov, and Oleg Kovin. "Ground Penetrating Radar: Utility/Rebar/Cable Detection and Concrete/Subgrade Debonding." In 23rd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2010. http://dx.doi.org/10.3997/2214-4609-pdb.175.sageep002.

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Xu, Ying, BingCheng Li, and Miaomiao Lu. "Numerical analysis of interface debonding detection in bonded repair with Rayleigh waves." In Seventh International Conference on Electronics and Information Engineering, edited by Xiyuan Chen. SPIE, 2017. http://dx.doi.org/10.1117/12.2265368.

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Song, F., G. L. Huang, and G. K. Hu. "Online debonding detection in honeycomb sandwich structures using multi-frequency guided waves." In Second International Conference on Smart Materials and Nanotechnology in Engineering, edited by Jinsong Leng, Anand K. Asundi, and Wolfgang Ecke. SPIE, 2009. http://dx.doi.org/10.1117/12.845752.

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Sen, Enhi, Osamu Saito, Nobuhiro Higuchi, and Yoji Okabe. "Debonding Detection at Core/Skin Interfaces in a Honeycomb Sandwich Structure Using a Laser Ultrasonic Visualization Method." In JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/lemp2020-8541.

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Abstract:
Abstract Honeycomb sandwich structures are widely used in aircraft owing to the superior characteristics, such as the light weight, the high specific bending stiffness and the high specific in-plane compressive strength. However the honeycomb sandwich structures are prone to have debonding damages at the interfaces between the skin and the honeycomb core, which degrades the mechanical properties largely. For inspection of damages in plate-like structures, the propagation of ultrasonic guided waves along the plate is effective. In this research, we attempted to detect the debonding at the skin/core interfaces in a honeycomb sandwich panel by using a laser ultrasonic visualization method. Debonding damages were artificially introduced in a sandwich panel consisting of two CFRP skin plates and an aluminum honeycomb core. Then, ultrasonic guided waves were excited in the panel through scanning of a laser irradiation on a surface of the plate and were received by a piezoelectric sensor installed on the same surface by using a laser ultrasonic visualizing inspector. As a result, we obtained visualization animations of the ultrasonic propagation behavior. From the change in the maximum amplitude distribution of the guided wave, we were able to identify the debonding damages at the skin/core interfaces in both the laser-irradiation side and the opposite side. Furthermore, a finite element analysis of the ultrasonic propagation in the honeycomb sandwich panel was conducted to confirm the phenomena observed in the experiments. From the calculation results, the mechanism of the observed phenomena was able to be clarified.
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