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Journal ArticleDOI

Nonlinear self-modulation and subharmonic acoustic spectroscopy for damage detection and location

17 Jun 2004-Applied Physics Letters (American Institute of Physics)-Vol. 84, Iss: 26, pp 5386-5388
TL;DR: In this article, a self-modulation mode of nonlinear acoustic vibrations of cracked defects has been analyzed and observed experimentally and attributed to the sum-frequency type resonance in a multi-degree of freedom system and include a subharmonic spectrum as a particular case.
Abstract: A self-modulation mode of nonlinear acoustic vibrations of cracked defects has been analyzed and observed experimentally. Spectral patterns of the self-modulation are attributed to the sum-frequency type resonance in a multi-degree-of-freedom system and include a subharmonic spectrum as a particular case. Both the subharmonic and self-modulation modes demonstrate a high localization around the defect and provide opportunities for early detection and recognition of damaged areas.
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the overall progress in nonlinear ultrasonic technique with the brief introduction of basic principle in the application of each nonlinear Ultrasonic phenomenon, including higher harmonic generation, subharmonic generation, nonlinear resonance, or mixed frequency response.
Abstract: The nondestructive assessment of the damage that occurs in components during service plays a key role for condition monitoring and residual life estimation of in-service components/structures. Ultrasound has been widely utilized for this; however most of these conventional methods using ultrasonic characteristics in the linear elastic region are only sensitive to gross defects but much less sensitive to micro-damage. Recently, the nonlinear ultrasonic technique, which uses nonlinear ultrasonic behavior such as higher-harmonic generation, subharmonic generation, nonlinear resonance, or mixed frequency response, has been studied as a positive method for overcoming this limitation. In this paper, overall progress in this technique is reviewed with the brief introduction of basic principle in the application of each nonlinear ultrasonic phenomenon.

581 citations

Journal ArticleDOI
TL;DR: In this paper, a review of modeling approaches used for nonlinear crack-wave interactions is presented, including models of crack-induced elastic, thermo-elastic and dissipative nonlinearities.

248 citations

Journal ArticleDOI
TL;DR: Full wavefield measurements obtained with either an air-coupled transducer mounted on a scanning stage or a scanning laser vibrometer can be combined with effective signal and imaging processing algorithms to support characterization of guided waves as well as detection, localization and quantification of structural damage.

236 citations


Cites background from "Nonlinear self-modulation and subha..."

  • ...In addition, SLDV detected wavefields have been analyzed to investigate the generation of higher harmonics in damaged structural components and to highlight the presence of nonlinearities [21]....

    [...]

Journal ArticleDOI
TL;DR: In this article, the model of a resonant defect was used for the selection of the wave frequency to enhance the excitation of the defect in nonlinear acoustics and ultrasonic thermography.
Abstract: It is experimentally shown that, to provide maximum acoustic wave-defect interaction, the concept of a local defect resonance should be applied. The model of a resonant defect is used for the selection of the wave frequency to enhance the excitation of the defect in nonlinear acoustics and ultrasonic thermography. An increase in nonlinear response of the defect at its local resonance exceeds substantially the one at natural frequencies of the specimen. The strong wave-defect interaction is confirmed by resonance induced rise of local temperature of the defect in the frequency band of its local resonance.

173 citations

Journal ArticleDOI
TL;DR: In this article, a hybrid approach for characterizing fatigue damage was developed, using two genres of damage indices constructed based on the linear and the nonlinear features of acousto-ultrasonic waves.

147 citations


Cites background from "Nonlinear self-modulation and subha..."

  • ...The nonlinear features which are often exploited by the approaches in this category include second- [27–30] or sub-harmonics [31], mixed frequency responses [32] (e....

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References
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BookDOI
01 Jan 1982
TL;DR: The Review of Progress in Quantitative NDE (ROPQN) as mentioned in this paper is the world's leading conference in reporting annually new research and development results in quantitative NDE and promotes communication between the research and engineering communities and emphasize current reporting of work in progress.
Abstract: The Review of Progress in Quantitative NDE is the world's leading conference in reporting annually new research and development results in quantitative NDE. The conference reports on both fundamental and applied advances in NDE and promotes communication between the research and engineering communities and emphasize current reporting of work in progress. Attendees include representatives of academia (including students), industry, and government with approximately one-half coming from the United States and the other half from overseas. This volume represents the best report of ongoing work that is available anywhere. Connections and overlap with the medical diagnostic community are highlighted.

1,989 citations

Journal ArticleDOI
TL;DR: The results of experimental investigation of acoustic non-linear phenomena on contact boundaries are presented in this article, where simulation experiments demonstrated a threshold nonlinear distortion due to "clapping" and "kissing" mechanisms, multiple bifurcations and chaos development for contact vibrations.

285 citations

Journal ArticleDOI
TL;DR: A new class of nonlinear acoustic phenomena has been observed for acoustic wave interactions with cracked defects in solids, and acoustic-wave impact on a crack is shown to exhibit amplitude hysteresis and storage for parametric and non linear acoustic effects.
Abstract: A new class of nonlinear acoustic phenomena has been observed for acoustic wave interactions with cracked defects in solids. Parametric modulation of crack stiffness results in fractional acoustic subharmonics, wave instability, and generation of chaotic noiselike acoustic excitations. Acoustic-wave impact on a crack is shown to exhibit amplitude hysteresis and storage for parametric and nonlinear acoustic effects. The measured storage time amounts to several hours and is believed to be due to a long-term relaxation of thermally induced microstrain within a crack area.

115 citations

Journal ArticleDOI
TL;DR: In this paper, the nonlinear response of a solid by modulation of a high by a low-frequency wave, and employing moving-window, synchronous detection is used to locate isolated nonlinear scattering source(s) in solids.
Abstract: We have developed an imaging method for locating isolated nonlinear scattering source(s) in solids. It relies on extracting the nonlinear response of a solid by modulation of a high by a low-frequency wave, and employing moving-window, synchronous detection. The resulting image consists of nonlinear wave reflection profiles with remarkable sensitivity to an isolated elastic nonlinear source(s). In creating the image, we can distinguish between a nonlinear scattering source and other wave scatterers in the material. The method should work equally well for imaging the relative nonlinearity of different regions within a volume.

96 citations

Journal ArticleDOI
TL;DR: The proposed theoretical models attribute the phenomenon to hysteresis in transition of the acoustically forced oscillation of cracks from a nonclapping regime to a regime of clapping contacts.
Abstract: A new phenomenon of self-induced hysteresis has been observed in the interaction of bulk acoustic waves with a cracked solid. It consists in a hysteretic behavior of material nonlinearity as a function of the incident pump wave amplitude. Hysteresis manifests itself in the self-action of the monochromatic pump wave and in the excitation of its superharmonics and of its subharmonics. The proposed theoretical models attribute the phenomenon to hysteresis in transition of the acoustically forced oscillation of cracks from a nonclapping regime to a regime of clapping contacts.

90 citations