Local damage evaluation of a laminate composite plate using ultrasonic birefringence of shear wave
Sign Up to like & getrecommendations! Published in 2018 at "Composites Part B: Engineering"
DOI: 10.1016/j.compositesb.2018.01.006
Abstract: Abstract This paper presents an ultrasonic non-destructive testing method to locally characterize composite material damage through the analysis of the anisotropy behavior variation induced by damage. The approach is based on shear wave contact measurements… read more here.
Keywords: evaluation laminate; shear wave; local damage; damage ... See more keywords
DEM-FEM coupling method to simulate thermally induced stresses and local damage in composite materials
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2018.10.030
Abstract: Abstract The present contribution is dedicated to a coupling method mixing finite and discrete elements to simulate thermally induced stresses and local damage in composites. Investigations are focused on ceramic-metal materials which are characterized by… read more here.
Keywords: coupling method; simulate thermally; dem fem; fem coupling ... See more keywords
Local damage in grain boundary stabilized nanocrystalline aluminum
Sign Up to like & getrecommendations! Published in 2021 at "Materials Letters"
DOI: 10.1016/j.matlet.2021.130153
Abstract: Abstract The excess free volume in grain boundaries of pure nanocrystalline aluminum leads to the grain coarsening, which degrades their desirable mechanical properties. The preferential segregation of dopants to the grain boundaries has been proposed… read more here.
Keywords: damage grain; grain boundaries; grain; nanocrystalline aluminum ... See more keywords
Local damage detection based on vibration data analysis in the presence of Gaussian and heavy-tailed impulsive noise
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2020.108400
Abstract: Abstract Local damage detection in bearings focuses on the identification of periodically impulsive components. Popular methods assume presence of either non-Gaussian noise or different frequency band for informative and non-informative impulses, and use statistics to… read more here.
Keywords: damage detection; presence; impulsive noise; local damage ... See more keywords
Separation of multiple local-damage-related components from vibration data using Nonnegative Matrix Factorization and multichannel data fusion
Sign Up to like & getrecommendations! Published in 2020 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2020.106954
Abstract: Abstract The problem of local damage detection in case of analyzing vibration signal from rotating machines is mostly related to the detection of periodic impulsive components. Depending on various features of the signal, this task… read more here.
Keywords: data fusion; vibration; factorization; vibration data ... See more keywords
A non-local damage model for the fatigue behaviour of metallic polycrystals
Sign Up to like & getrecommendations! Published in 2020 at "Philosophical Magazine"
DOI: 10.1080/14786435.2020.1713412
Abstract: ABSTRACT The development of fatigue damage in metallic materials is a complex process influenced by both intrinsic (e.g. texture, defects) and extrinsic (e.g. loading mode, frequency) factors. To better understand this process, some efforts have… read more here.
Keywords: damage model; non local; model; fatigue behaviour ... See more keywords
One-dimensional harmonic scattering from a localized damage modeled as symmetric and asymmetric hysteretic nonlinearity
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the Acoustical Society of America"
DOI: 10.1121/10.0004463
Abstract: A monochromatic ultrasonic wave propagating in damaged material modeled as quadratic, cubic, and hysteretic nonlinearities generates higher harmonics as reported in various theoretical, computational, and experimental studies. In metals under fatigue, certain grains get plastically… read more here.
Keywords: symmetric asymmetric; asymmetric hysteretic; damage modeled; local damage ... See more keywords
Measures of Dependence for -Stable Distributed Processes and Its Application to Diagnostics of Local Damage in Presence of Impulsive Noise
Sign Up to like & getrecommendations! Published in 2017 at "Shock and Vibration"
DOI: 10.1155/2017/1963769
Abstract: Local damage detection in rotating machinery is simply searching for cyclic impulsive signal in noisy observation. Such raw signal is mixture of various components with specific properties (deterministic, random, cyclic, impulsive, etc.). The problem appears… read more here.
Keywords: distributed processes; dependence stable; stable distributed; local damage ... See more keywords