Zobrazeno 1 - 10
of 47
pro vyhledávání: '"S. G. Haslinger"'
Publikováno v:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 380
We present an active exterior cloak for flexural waves propagating in a Kirchhoff plate of infinite extent. The evanescent multipole devices are characterized by Macdonald functions K n of the required order, which, assuming time-harmonic vibrations,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8554fb87d9f411421eeb6b0860f4024
https://doi.org/10.1098/rsta.2022.0072
https://doi.org/10.1098/rsta.2022.0072
Publikováno v:
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
In this paper, we study wave propagation in elastic plates incorporating honeycomb arrays of rigid pins. In particular, we demonstrate that topologically non-trivial band-gaps are obtained by perturbing the honeycomb arrays of pins such that the rati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6203f1e679518e1eef775927c850a750
https://doi.org/10.1098/rsta.2021.0404
https://doi.org/10.1098/rsta.2021.0404
Publikováno v:
INSIGHT
The characteristics of planar defects (no loss of material volume) that arise during industrial plant operation are difficult to predict in detail, yet these can affect the performance of non-destructive testing (NDT) used to manage plant structural
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56337aa159ae62dc80a278411e7801fb
http://livrepository.liverpool.ac.uk/3116459/1/Insight_2021_Haslinger_etal.pdf
http://livrepository.liverpool.ac.uk/3116459/1/Insight_2021_Haslinger_etal.pdf
Publikováno v:
NDT & E International
Ultrasonic non-destructive evaluation techniques, such as time-of-flight diffraction (ToFD) for which the arrival times of waves diffracted from crack tips are analysed to locate and size defects, are well understood for smooth defects. In environmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b58b71f91944bf1a92160a5d075abef
https://doi.org/10.1016/j.ndteint.2021.102521
https://doi.org/10.1016/j.ndteint.2021.102521
Autor:
S. G. Haslinger, Domenico Tallarico
Publikováno v:
Applied Sciences
Volume 11
Issue 16
Applied Sciences, Vol 11, Iss 7576, p 7576 (2021)
Volume 11
Issue 16
Applied Sciences, Vol 11, Iss 7576, p 7576 (2021)
The transient scattering of in-plane elastic waves from a finite-sized periodic structure, comprising a regular grid of Swiss-cross holes arranged according to a square lattice, is considered. The theoretical and numerical modelling focuses on the un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::114dc4b5eceb9b9866c0e35ca3146641
https://doi.org/10.3390/app11167576
https://doi.org/10.3390/app11167576
Publikováno v:
SIAM Journal on Applied Mathematics. 77:1115-1135
This paper considers active cloaking of a square array of evenly spaced pins in a Kirchhoff plate in the presence of flexural waves. Active sources, modeled as ideal point sources, are represented by the nonsingular Green's function for the two-dimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da702472ed35b82b29ad01e49b574335
https://doi.org/10.1137/16m1088909
https://doi.org/10.1137/16m1088909
Publikováno v:
Health Monitoring of Structural and Biological Systems XIII.
Confidence in the ability to find defects in NDE and SHM using ultrasound depends on knowlege of the strength of the reflection of the ultrasound from the defect. Roughness of a defect, such as on the surface of a crack, has a strong effect on the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec4fef9e0a5a7270cdddb19a5d69f453
https://doi.org/10.1117/12.2514546
https://doi.org/10.1117/12.2514546
Publikováno v:
Journal of the Mechanics and Physics of Solids
Characterizing cracks within elastic media forms an important aspect of ultrasonic non-destructive evaluation (NDE) where techniques such as time-of-flight diffraction and pulse-echo are often used with the presumption of scattering from smooth, stra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbb4aa77201eda135fc116ea4b0571ef
https://doi.org/10.1016/j.jmps.2019.103852
https://doi.org/10.1016/j.jmps.2019.103852
Publikováno v:
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Proceedings. Mathematical, Physical, and Engineering Sciences
Proceedings. Mathematical, Physical, and Engineering Sciences
The paper includes novel results for the scattering and localization of a time-harmonic flexural wave by a semi-infinite herringbone waveguide of rigid pins embedded within an elastic Kirchhoff plate. The analytical model takes into account the orien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78cb95fd8987eb7dc342d4a545444ebc
Publikováno v:
Journal of Sound and Vibration
Rapid and accurate methods, based on the Kirchhoff approximation (KA), are developed to evaluate the scattering of shear waves by rough defects and quantify the accuracy of this approximation. Defect roughness has a strong effect on the reflection of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::220535aba3130f3f12d31a11170b7266
https://doi.org/10.1016/j.jsv.2019.114872
https://doi.org/10.1016/j.jsv.2019.114872