Relevant bibliographies by topics / 3D Laser vibrometry

Academic literature on the topic '3D Laser vibrometry'

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

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Journal articles on the topic "3D Laser vibrometry"

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Breaban, Florin, Roger Debuchy, and Didier Defer. "Laser Scanning Vibrometry and Holographic Interferometry Applied to Vibration Study." Applied Mechanics and Materials 801 (October 2015): 303–11. http://dx.doi.org/10.4028/www.scientific.net/amm.801.303.

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The applications of high performance materials in the aerospace and in the automotive technology in the next years need to develop new vibration study, nondestructive testing, predictive maintenance and industrial control methods.The Laser Scanning Vibrometry and Holographic Interferometry methods of vibration study and nondestructive testing by modal analysis are described. The Laser Scanning Vibrometer PSV 400 is made by Polytec GmbH and the PSV software reconstructs the 3D model of the measured micro-deformation of the object. The holographic laser system HLS-3 from Lumonics Inc. has 100 MW ruby laser peak power and 30 ns pulse width.Using mechanical excitation to induce a measurable vibration, the Laser Scanning Vibrometry and Holographic Interferometry modal analysis measurements show up the vibrational signatures and the damaged areas of the objects made by high performance materials - polymers, composites.
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Orta, Adil Han, Mathias Kersemans, and Koen Van Den Abeele. "On the Identification of Orthotropic Elastic Stiffness Using 3D Guided Wavefield Data." Sensors 22, no. 14 (July 15, 2022): 5314. http://dx.doi.org/10.3390/s22145314.

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Scanning laser Doppler vibrometry is a widely adopted method to measure the full-field out-of-plane vibrational response of materials in view of detecting defects or estimating stiffness parameters. Recent technological developments have led to performant 3D scanning laser Doppler vibrometers, which give access to both out-of-plane and in-plane vibrational velocity components. In the present study, the effect of using (i) the in-plane component; (ii) the out-of-plane component; and (iii) both the in-plane and out-of-plane components of the recorded vibration velocity on the inverse determination of the stiffness parameters is studied. Input data were gathered from a series of numerical simulations using a finite element model (COMSOL), as well as from broadband experimental measurements by means of a 3D infrared scanning laser Doppler vibrometer. Various materials were studied, including carbon epoxy composite and wood materials. The full-field vibrational velocity response is converted to the frequency-wavenumber domain by means of Fourier transform, from which complex wavenumbers are extracted using the matrix pencil decomposition method. To infer the orthotropic elastic stiffness tensor, an inversion procedure is developed by coupling the semi-analytical finite element (SAFE) as a forward method to the particle swarm optimizer. It is shown that accounting for the in-plane velocity component leads to a more accurate and robust determination of the orthotropic elastic stiffness parameters.
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Weekes, Ben, and David Ewins. "Multi-frequency, 3D ODS measurement by continuous scan laser Doppler vibrometry." Mechanical Systems and Signal Processing 58-59 (June 2015): 325–39. http://dx.doi.org/10.1016/j.ymssp.2014.12.022.

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Marks, Ryan, Clare Gillam, Alastair Clarke, Joe Armstrong, and Rhys Pullin. "Damage detection in a composite wind turbine blade using 3D scanning laser vibrometry." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 16 (December 6, 2016): 3024–41. http://dx.doi.org/10.1177/0954406216679612.

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As worldwide wind energy generation capacity grows, there is an increasing demand to ensure structural integrity of the turbine blades to maintain efficient and safe energy generation. Currently, traditional non-destructive testing methods and visual inspections are employed which require the turbine to be out-of-operation during the inspection periods, resulting in costly and lengthy downtime. This study experimentally investigates the potential for using Lamb waves to monitor the structural integrity of a composite wind turbine blade that has been subject to an impact representative of damage which occurs in service. 3D scanning laser vibrometry was used to measure Lamb waves excited at three different frequencies both prior to, and after, impact to identify settings for an optimal system. Signal processing techniques were applied to the datasets to successfully locate the damage and highlight regions on the structure where the Lamb wave was significantly influenced by the presence of the impact damage. Damage size resulting from the impact was found to correlate well with the laser vibrometry results. The study concluded that acousto-ultrasonic-based structural health monitoring systems have great potential for monitoring the structural integrity of wind turbine blades.
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Derusova, Daria A., Vladimir P. Vavilov, Nikolay V. Druzhinin, Victor Y. Shpil’noi, and Alexey N. Pestryakov. "Detecting Defects in Composite Polymers by Using 3D Scanning Laser Doppler Vibrometry." Materials 15, no. 20 (October 14, 2022): 7176. http://dx.doi.org/10.3390/ma15207176.

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The technique of 3D scanning laser Doppler vibrometry has recently appeared as a promising tool of nondestructive evaluation of discontinuity-like defects in composite polymers. The use of the phenomenon of local defect resonance (LDR) allows intensifying vibrations in defect zones, which can reliably be detected by means of laser vibrometry. The resonance acoustic stimulation of structural defects in materials causes compression/tension deformations, which are essentially lower than the material tensile strength, thus proving a nondestructive character of the LDR technique. In this study, the propagation of elastic waves in composites and their interaction with structural inhomogeneities were analyzed by performing 3D scanning of vibrations in Fast Fourier Transform mode. At each scanning point, the in-plane (x, y) and out of plane (z) vibration components were analyzed. The acoustic stimulation was fulfilled by generating a frequency-modulated harmonic signal in the range from 50 Hz to 100 kHz. In the case of a reference plate with a flat bottom hole, the resonance frequencies for all (x, y, and z) components were identical. In the case of impact damage in a carbon fiber reinforced plastic sample, the predominant contribution into total vibrations was provided by compression/tension deformations (x, y vibration component) to compare with vibrations by the z coordinate. In general, inspection results were enhanced by analyzing total vibration patterns obtained by averaging results at some resonance frequencies.
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Crua, Cyril, and Morgan R. Heikal. "Time-resolved fuel injector flow characterisation based on 3D laser Doppler vibrometry." Measurement Science and Technology 25, no. 12 (October 29, 2014): 125301. http://dx.doi.org/10.1088/0957-0233/25/12/125301.

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Scislo, Lukasz. "Single-Point and Surface Quality Assessment Algorithm in Continuous Production with the Use of 3D Laser Doppler Scanning Vibrometry System." Sensors 23, no. 3 (January 22, 2023): 1263. http://dx.doi.org/10.3390/s23031263.

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In the current economic situation of many companies, the need to reduce production time is a critical element. However, this cannot usually be carried out with a decrease in the quality of the final product. This article presents a possible solution for reducing the time needed for quality management. With the use of modern solutions such as optical measurement systems, quality control can be performed without additional stoppage time. In the case of single-point measurement with the Laser Doppler Vibrometer, the measurement can be performed quickly in a matter of milliseconds for each product. This article presents an example of such quality assurance measurements, with the use of fully non-contact methods, together with a proposed evaluation criterion for quality assessment. The proposed quality assurance algorithm allows the comparison of each of the products’ modal responses with the ideal template and stores this information in the cloud, e.g., in the company’s supervisory system. This makes the presented 3D Laser Vibrometry System an advanced instrumentation and data acquisition system which is the perfect application in the case of a factory quality management system based on the Industry 4.0 concept.
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Staszewski, W. J., B. C. Lee, and R. Traynor. "Fatigue crack detection in metallic structures with Lamb waves and 3D laser vibrometry." Measurement Science and Technology 18, no. 3 (January 24, 2007): 727–39. http://dx.doi.org/10.1088/0957-0233/18/3/024.

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Pedrini, G., S. Schedin, and H. J. Tiziani. "Pulsed digital holography combined with laser vibrometry for 3D measurements of vibrating objects." Optics and Lasers in Engineering 38, no. 3-4 (September 2002): 117–29. http://dx.doi.org/10.1016/s0143-8166(02)00005-2.

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Filippov, Andrey V., Vladimir A. Krasnoveikin, Nikolay V. Druzhinin, and Valery E. Rubtsov. "The Use of Laser-Doppler Vibrometry for Modal Analysis of Carbon-Fiber Reinforced Composite." Key Engineering Materials 712 (September 2016): 313–18. http://dx.doi.org/10.4028/www.scientific.net/kem.712.313.

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Both modal analysis procedure and the results obtained on a three-component 3D-printed carbon-fiber reinforced composite (CFRC) are presented. Experimental modal analysis of on the composite has been carried out to obtain the dynamic behavior characteristics. As revealed, the different eigen-oscillations waveforms possess different sensitivity of its amplitude frequency response to structural defects of the composite. For the similar waveforms we observed the differences in eigen-oscuillation frequencies, vibration velocities and damping factors which can be caused by the presence of numerous defects homogeneously distributed in one of the samples.
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Dissertations / Theses on the topic "3D Laser vibrometry"

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Chia, Gomez Laura Piedad. "Elaboration et caractérisation de matériaux fonctionnels pour la stereolithographie biphotonique." Thesis, Mulhouse, 2017. http://www.theses.fr/2017MULH9153.

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La stéréolithographie biphotonique (TPS) est une technique de microfabrication 3D basée sur la polymérisation par absorption biphotonique qui permet d’obtenir en une seule étape des structures 3D complexes avec des détails sub-100nm. Aujourd’hui, en raison des conditions spécifiques de fabrication liées à la TPS (fort flux, confinement spatial de la photoréaction,…), un des enjeux concerne le développement de matériaux fonctionnels compatibles avec ce procédé. Dans ce contexte, l’objectif de cette thèse a été de développer de nouveaux matériaux fonctionnels à base de polymères à empreintes moléculaires (MIP) pour élaborer des capteurs chimiques. Une première partie de ce travail a consisté à mettre en place différentes méthodes dédiées à la caractérisation des propriétés géométriques, chimiques et mécaniques des matériaux élaborés par TPS. Par exemple, la vibrométrie laser a été utilisée pour la première fois afin de sonder de façon non-invasive les propriétés mécaniques de microstructures réalisées par TPS. Dans un second temps, ce travail a été mis à profit pour étudier l’impact du processus de fabrication (i.e. conditions photoniques) ainsi que des paramètres physico-chimiques affectant la photoréaction (i.e. inhibition par oxygène et nature du monomère) sur les propriétés finales des matériaux. Enfin, en s’appuyant sur les résultats obtenus, des microcapteurs chimiques à base de MIP, à lecture optique ou mécanique, ont été fabriqués. Leurs propriétés de reconnaissance moléculaire, ainsi que leurs sélectivités ont été démontrées pour une molécule cible modèle (D-L-Phe)
The two-photon stereolithography (TPS) technique is a micro-nanofabrication method based on photopolymerization by two-photon absorption that allows in a single manufacturing step to obtain complex 3D structures with high-resolution details (sub-100nm). Due to the specific conditions of TPS process (intense photon flux, spatial confinement of the photoreaction…) one of the main concerns today is the development of functional materials compatible with the TPS. According to the aforementioned, the general objective of this thesis was to develop new functional materials based on molecularly imprinted polymers (MIP) to elaborate chemical microsensors. In the first step of this work, different methods were implemented to characterize the geometrical, chemical and mechanical properties of the materials synthesized by TPS. For example, laser-Doppler vibrometry was used for first time to evaluate the mechanical properties of microstructures fabricated by TPS in a non-invasive way. In the second step, the characterization methodology was used to study the impact of the manufacturing process (i.e. photonic conditions) and the physicochemical parameters that affect the photoreaction (i.e. oxygen inhibition and the nature of the monomer) and the final properties of the materials. Finally, the obtained results enabled the prototyping of chemical microsensors based on MIP. Their molecular recognition properties and their selectivity were demonstrated for the molecule (D-L-Phe) by an optical and a mechanical sensing method
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Langston, Paul Wesley. "Implementation and evaluation of a two-dimensional laser doppler vibrometer system for non-contact monitoring of external stress loading of aluminum samples." Thesis, Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33808.

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This thesis details the development and validation of a laser Doppler vibrometer-based measurement system that is capable of quantifying not only the normal vibration of a solid body but also the component of vibration that is parallel to the plane containing the surface of interest. LDV manufacturers produce various devices that capture 3D measurements in a beam configuration that can be used to decompose the measured signals into not only the normal velocity of the surface of an object but also two orthogonal in-plane components of the vibration. It was a slightly simplified two-dimensional version of this approach that was chosen for implementation in the Wave Physics Lab using individual components to create a cheaper, more flexible system than those produced by companies such as Polytec. The goal of this system is to facilitate the exploration and discovery of areas and applications where 2D measurement may provide a more complete and precise view of the physics of different phenomena. Upon completion of the system development and validation, a study was done that sought to measure the acoustoelastic effect in an Aluminum plate by measuring how increasing loads alter both the normal and in-plane components of Lamb wave propagation in the plate. The acoustoelastic effect is the effect of stress on wave speed caused by non-linearity in the propagation medium.
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Aryan, Pouria. "A method for compensation of changing environmental and operational conditions for structural health monitoring using guided waves." Thesis, 2016. http://hdl.handle.net/2440/101789.

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Structural health monitoring (SHM) systems using guided waves permit the detection of structural damage via a network of permanently attached or embedded sensors. The benefits of such systems in terms of the reduction of maintenance and operation costs across many industries are now widely recognised. To identify the presence of damage, the amplitude of residual wave signals remaining after the subtraction of the reference data is often utilised in damage diagnostics. However, even in the absence of structural damage, these residual signals are usually not non-zero because of changing environmental or operational conditions (EOCs). Therefore, some form of compensation for variable EOCs is absolutely essential for guided wave based SHM methods reliant on baseline subtraction, to work accurately in real-world applications. Many studies have demonstrated that the effect of changing EOCs can mask damage to such a degree that a critical defect might not be detected. Several effective strategies, based on signal processing, have been developed in recent years, specifically in order to compensate for ambient temperature variations. Nevertheless, many other factors and conditions, such as a progressive failure of the actuator and the adhesive bonding layer, changing humidity and boundary conditions or degradation of material properties, cannot be identified or compensated for with the existing strategies and techniques. This research describes a conceptually new method, which is capable of reconstructing the baseline time traces corresponding to the current state of the structure and EOCs. Thus, there is no need for any other compensation for EOCs when using this method for damage diagnosis. The method is based on 3D surface measurements of the velocity field near the actuator, using laser vibrometry in conjunction with high-fidelity finite element simulations of guided wave propagations in the defect-free structures. To demonstrate the feasibility and efficiency of the proposed method, the thesis provides several examples of the reconstruction of named baseline time traces and damage detection in isotropic and composite structural components. It is recognised that the utilisation of 3D laser measurement systems and transient FE simulations can significantly increase the cost of the damage detection if this method is to be employed in practice. However, it is believed that with the advances in computer and laser technologies the cost-efficiency can be significantly improved and, in the future, the method will be applied in a wide range of engineering applications. It should be highlighted that for the current thesis the concept and idea have been verified through comprehensive numerical and experimental studies and this is a fundamental step in the development of this innovative method. As a result, this thesis is largely focused on the feasibility, quantifiable proof of the conceptualisations underpinning the thesis and demonstrations of the potential of this new development in engineering applications.
Thesis (Ph.D.) -- University of Adelaide, School of Mechanical Engineering, 2016.
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Book chapters on the topic "3D Laser vibrometry"

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Tilmann, Samuel. "Full Field Strain Measurements Using 3D Laser Vibrometry." In Rotating Machinery, Optical Methods & Scanning LDV Methods, Volume 6, 105–12. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12935-4_12.

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Macknelly, D. J., and P. R. Ind. "Component Qualification Using 3D Laser Vibrometry and Transmissibility Models." In Experimental Techniques, Rotating Machinery, and Acoustics, Volume 8, 181–87. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15236-3_17.

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Tatar, Kourosh, Erik Olsson, and Fredrik Forsberg. "Tomographic Reconstruction of 3D Ultrasound Fields Measured Using Laser Vibrometry." In Experimental Analysis of Nano and Engineering Materials and Structures, 337–38. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_167.

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Witt, Bryan, and Brandon Zwink. "Pushing 3D Scanning Laser Doppler Vibrometry to Capture Time Varying Dynamic Characteristics." In Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7, 111–21. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74693-7_11.

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Mallareddy, Tarun Teja, Daniel J. Alarcón, Sarah Schneider, and Peter G. Blaschke. "The Influence of Geometrical Correlation in Modal Validation Using Automated 3D Metrology." In Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7, 239–44. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74693-7_23.

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Chen, Da-Ming, and W. D. Zhu. "Rapid and Dense 3D Vibration Measurement by Three Continuously Scanning Laser Doppler Vibrometers." In Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7, 19–29. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74693-7_3.

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Marwitz, Simon, and Volkmar Zabel. "Operational Modal Analysis with a 3D Laser Vibrometer Without External Reference." In Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8, 75–85. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30084-9_7.

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Rohe, Daniel P. "Strategies for Testing Large Aerospace Structures with 3D SLDV." In Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8, 1–12. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54648-3_1.

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Quattromani, G., A. Palermo, F. Pulvirenti, E. Sabbioni, and F. Cheli. "Nonlinear 3D Dynamic Model of an Automotive Dual Mass Flywheel." In Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8, 131–42. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54648-3_14.

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Witt, Bryan, Brandon Zwink, and Ron Hopkins. "Applications of 3D Scanning Laser Doppler Vibrometry to an Article with Internal Features." In Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8, 85–95. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54648-3_9.

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Conference papers on the topic "3D Laser vibrometry"

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Swenson, Eric D., Hoon Sohn, Steven E. Olson, and Martin P. Desimio. "A comparison of 1D and 3D laser vibrometry measurements of Lamb waves." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Tribikram Kundu. SPIE, 2010. http://dx.doi.org/10.1117/12.847362.

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Olsson, Erik, and Mikael Sjödahl. "3D Selective Imaging of Sound Sources in Air from 1D Laser Vibrometry Measurements." In Digital Holography and Three-Dimensional Imaging. Washington, D.C.: OSA, 2009. http://dx.doi.org/10.1364/dh.2009.jtub6.

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Pedrini, Giancarlo, Staffan Schedin, and Hans J. Tiziani. "Combination of pulsed digital holography and laser vibrometry for the 3D measurements of vibrating objects." In 4th International Conference on Vibration Measurement by Laser Techniques, edited by Enrico P. Tomasini. SPIE, 2000. http://dx.doi.org/10.1117/12.386721.

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Weekes, B., D. Ewins, and F. Acciavatti. "Continuous-scanning laser Doppler vibrometry: Extensions to arbitrary areas, multi-frequency and 3D capture." In 11TH INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER AND NONCONTACT TECHNIQUES - AIVELA 2014: Advances and Applications. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4879604.

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Barnoncel, David, Wieslaw J. Staszewski, Jochen Schell, and Patrick Peres. "Damage detection in reusable launch vehicle components using guided ultrasonic waves and 3D laser vibrometry." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Tribikram Kundu. SPIE, 2013. http://dx.doi.org/10.1117/12.2009846.

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Schubert, L., M. Barth, T. Klesse, B. Köhler, and B. Frankenstein. "Guided elastic waves and their impact interaction in CFRP structures characterized by 3D laser scanning vibrometry." In The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, edited by Tribikram Kundu. SPIE, 2008. http://dx.doi.org/10.1117/12.777510.

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Ayers, J., C. T. Owens, K. C. Liu, E. Swenson, A. Ghoshal, and V. Weiss. "Guided wave-based J-integral estimation for dynamic stress intensity factors using 3D scanning laser Doppler vibrometry." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: VOLUME 32. AIP, 2013. http://dx.doi.org/10.1063/1.4789030.

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Herth, Etienne, Franck Lardet-Vieudrin, Florent Deux, Laurie Valbin, Emmanuelle Algre, Jochen Schell, and Heinrich Steger. "Detection of out-of-plane and in-plane (XYZ) motions of piezoelectric microcantilever by 3D-Laser Doppler Vibrometry." In 2016 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP). IEEE, 2016. http://dx.doi.org/10.1109/dtip.2016.7514876.

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Tian, Zhenhua, Guoliang Huang, and Lingyu Yu. "Study of Guided Wave Propagation in Honeycomb Sandwich Structures." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7642.

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This paper studies the guided waves in honeycomb sandwich structures and explores the ability of guided waves for the debonding damage detection. Both the finite element (FE) simulations and laser vibrometry experiments are used. A three-dimensional (3D) FE model is built to simulate the guided waves in a honeycomb sandwich plate. The simulation results show the guided waves in the structure depend on the wave frequency. At low frequencies, the global guided waves propagate in the entire sandwich, while leaky guided waves dominate in the skin panel at high frequencies. To further understand the guided wave propagation fundamentals, laser vibrometry experiments are performed. The waveforms, time-space wavefields, and frequency-wavenumber spectra obtained from the experiments are used to unveil the wave propagation features. The experimental results confirm the leaky guided waves. Moreover, the experimental results show the complex wave interactions induced by the honeycomb core. When the debonding between the skin and honeycomb core presents, the guided wave amplitude increases, and the wave interaction with the honeycomb core reduces.
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Owens, Todd, and Eric Swenson. "Effects of Applied Load on the Amplitude of PZT-Generated Lamb Waves in Aluminum Plates Measured via 3D Laser Doppler Vibrometry." In 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
20th AIAA/ASME/AHS Adaptive Structures Conference
14th AIAA. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-1786.

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Reports on the topic "3D Laser vibrometry"

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Blecke, Jill, and Daniel Peter Rohe. NMSBA High Frequency Modal Analysis of a Solid Metal Cylinder using a Polytec 3D Scanning Laser Vibrometer. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1183948.

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Rohe, Daniel Peter. Documentation and Instructions for Running Two Python Scripts that Aid in Setting up 3D Measurements using the Polytec 3D Scanning Laser Doppler Vibrometer. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1213303.

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