Guided Waves in the Multilayered One-Dimensional Hexagonal Quasi-crystal Plates
Sign Up to like & getrecommendations! Published in 2020 at "Acta Mechanica Solida Sinica"
DOI: 10.1007/s10338-020-00178-9
Abstract: Guided waves in the multilayered one-dimensional quasi-crystal plates are, respectively, investigated in the context of the Bak and elasto-hydrodynamic models. Dispersion curves and phonon and phason displacements are calculated using the Legendre polynomial method. Wave… read more here.
Keywords: crystal plates; waves multilayered; multilayered one; quasi crystal ... See more keywords
Dispersion Energy Analysis of Rayleigh and Love Waves in the Presence of Low-Velocity Layers in Near-Surface Seismic Surveys
Sign Up to like & getrecommendations! Published in 2017 at "Surveys in Geophysics"
DOI: 10.1007/s10712-017-9440-4
Abstract: High-frequency surface-wave analysis methods have been effectively and widely used to determine near-surface shear (S) wave velocity. To image the dispersion energy and identify different dispersive modes of surface waves accurately is one of key… read more here.
Keywords: dispersion energy; lvl guided; energy; surface ... See more keywords
Understanding the guided waves propagation behavior in timber utility poles
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Civil Structural Health Monitoring"
DOI: 10.1007/s13349-020-00417-0
Abstract: Guided stress waves are considered one of the most efficient and reliable techniques that provide sufficient quantitative and qualitative assessment. In this study, we focused on scrutinizing the propagation behavior of guided waves in western… read more here.
Keywords: propagation behavior; timber; waves propagation; understanding guided ... See more keywords
Methodology for circumferential localisation of defects within small-diameter concrete-covered pipes based on changing of energy distribution of non-axisymmetric guided waves
Sign Up to like & getrecommendations! Published in 2020 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2020.107416
Abstract: Abstract Concrete causes substantial attenuation on ultrasonic guided waves during their propagation within a pipe. The circumferential position of the defect is even more difficult to detect in a concrete-covered pipe with a small diameter.… read more here.
Keywords: methodology; small diameter; concrete covered; concrete ... See more keywords
An integrated numerical model for investigating guided waves in impact-damaged composite laminates
Sign Up to like & getrecommendations! Published in 2017 at "Composite Structures"
DOI: 10.1016/j.compstruct.2017.06.034
Abstract: Abstract This paper presents a novel numerical technique that combines predictions of impact-induced damage and subsequent ultrasonic guided-wave propagation in composite laminates, with emphasis on the development and verification of the modelling framework. Delamination and… read more here.
Keywords: numerical model; composite laminates; model investigating; integrated numerical ... See more keywords
Guided waves for debonding identification in CFRP-reinforced concrete beams
Sign Up to like & getrecommendations! Published in 2017 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2016.11.058
Abstract: Abstract Ultrasonic guided waves excited and sensed by surface-bonded piezoelectric wafers were simulated and used to quantitatively evaluate the debonding between concrete beams and carbon fibre reinforced polymer (CFRP) overlay. Eight concrete specimens reinforced by… read more here.
Keywords: concrete beams; waves debonding; cfrp reinforced; reinforced concrete ... See more keywords
Reducing false alarms in guided waves structural health monitoring of pipelines: Review synthesis and debate
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Pressure Vessels and Piping"
DOI: 10.1016/j.ijpvp.2020.104210
Abstract: Abstract Guided waves based structural health monitoring systems have been proposed to ensure reliability and structural integrity of pipelines. These systems are designed with permanently attached transducers that are able to detect automatically early state… read more here.
Keywords: monitoring pipelines; health monitoring; false alarms; structural health ... See more keywords
Parameter dependence and stability of guided TE-waves in a lossless nonlinear dielectric slab structure
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.05.042
Abstract: Abstract The nonlinear Schrodinger equation is the basis of the traditional stability analysis of nonstationary guided waves in a nonlinear three-layer slab structure. The stationary (independent of the propagation distance) solutions of the nonlinear Schrodinger… read more here.
Keywords: dependence; parameter dependence; stability; slab structure ... See more keywords
Observations of guided waves from the Pamir seismic zone provide additional evidence for the existence of subducted continental lower crust
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2019.04.007
Abstract: Abstract As part of the TIPAGE (TIen shan – PAmir GEodynamic program) project, passive seismological observations were made along an approximately N-S profile crossing the Pamir seismic zone for about one year. From these observations… read more here.
Keywords: lower crust; velocity; guided waves; zone ... See more keywords
Modeling of nonlinear interactions between guided waves and fatigue cracks using local interaction simulation approach.
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2016.10.001
Abstract: This article presents a parallel algorithm to model the nonlinear dynamic interactions between ultrasonic guided waves and fatigue cracks. The Local Interaction Simulation Approach (LISA) is further developed to capture the contact-impact clapping phenomena during… read more here.
Keywords: fatigue cracks; waves fatigue; local interaction; interaction simulation ... See more keywords
Beam forming of shear horizontal guided waves by multi-row staggered magnet configurations.
Sign Up to like & getrecommendations! Published in 2021 at "Ultrasonics"
DOI: 10.1016/j.ultras.2021.106405
Abstract: This paper introduces the wave interferences effects of staggering multiple rows of Periodically Permanent Magnets (PPM) in an Electromagnetic Acoustic Transducer (EMAT) configuration to achieve selective beam forming effects such as steering, focusing and de-focusing… read more here.
Keywords: waves multi; beam forming; horizontal guided; forming shear ... See more keywords