Impact-Based Nonlinear Acoustic Testing for Characterizing Distributed Damage in Concrete
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Nondestructive Evaluation"
DOI: 10.1007/s10921-017-0428-2
Abstract: Nonlinear acoustics-based nondestructive evaluation (NDE) techniques have shown great promise for identification of microstructure and microcracking in a wide spectrum of materials (e.g., metals, metallic alloys, composites, rocks, cementitious materials). This class of NDE techniques… read more here.
Keywords: based nonlinear; impact; impact based; acoustic testing ... See more keywords
Wave modulation in a nonlinear acoustic metamaterial
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Non-Linear Mechanics"
DOI: 10.1016/j.ijnonlinmec.2021.103788
Abstract: Abstract The nonlinear modulation of waves in a metamaterial mass-in-mass lattice model is studied. The governing continuum nonlinear equation is obtained from the original discrete model. The important differences in the modulated nonlinear wave dynamics… read more here.
Keywords: modulation; nonlinear acoustic; wave modulation; modulation nonlinear ... See more keywords
Theoretical and numerical investigations of the nonlinear acoustic response of feature guided waves in a welded joint
Sign Up to like & getrecommendations! Published in 2021 at "Wave Motion"
DOI: 10.1016/j.wavemoti.2020.102696
Abstract: Abstract The propagation characteristics of feature guided waves (FGWs) in topographical waveguides, such as welded joints, have been widely investigated. However, most of these investigations analyzed linear acoustic characteristics. Considering the high sensitivity of nonlinear… read more here.
Keywords: feature guided; welded joint; acoustic response; nonlinear acoustic ... See more keywords
Wave propagation in a nonlinear acoustic metamaterial beam considering third harmonic generation
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aaf65e
Abstract: Nonlinear acoustic metamaterials (NAMs) provide new ways to control elastic waves. In this work, flexural wave propagation in an infinite NAM beam consisting of periodic Duffing resonators is reported by considering the third harmonic generation.… read more here.
Keywords: propagation; considering third; third harmonic; harmonic generation ... See more keywords
Nonlinear Acoustic Tomography for Measuring the Temperature and Velocity Fields by Using the Covariance Matrix Adaptation Evolution Strategy Algorithm
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2021.3130918
Abstract: Accurate measurement of temperature and velocity fields in combustion and flow diagnostic plays an important role in analyzing the heat transfer mechanism and ensuring the safe operation of equipment. In this work, considering the refraction… read more here.
Keywords: temperature velocity; nonlinear acoustic; temperature; velocity fields ... See more keywords
Analysis and Identification of Nonlinear Acoustic Damping in Miniature Loudspeakers
Sign Up to like & getrecommendations! Published in 2021 at "Applied Sciences"
DOI: 10.3390/app11167713
Abstract: Nonlinear acoustic damping is a key nonlinearity in miniature loudspeakers when the air velocity is at a high amplitude. Measurement of nonlinear acoustic damping is beneficial for predicting and analyzing the performance of miniature loudspeakers.… read more here.
Keywords: miniature loudspeakers; nonlinear acoustic; acoustic damping; identification ... See more keywords