Results 281 to 290 of about 3,587,319 (350)
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2014
Wave phenomena are used to evaluate material properties nondestructively as well as to locate and measure defects in critical structures. In fact, physical acoustics is directly related to ultrasound since the ultrasonic waves are employed to determine the properties of materials.
CARCANGIU, SARA +2 more
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Wave phenomena are used to evaluate material properties nondestructively as well as to locate and measure defects in critical structures. In fact, physical acoustics is directly related to ultrasound since the ultrasonic waves are employed to determine the properties of materials.
CARCANGIU, SARA +2 more
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On wave propagation of porous nanotubes
International Journal of Engineering Science, 2018An analytic model of porous nanotubes for the wave propagation analysis is formulated with the help of the nonlocal strain gradient theory. The dispersion relations between phase velocity and wave number is determined by solving an eigenvalue problem. It
G. She, F. Yuan, Yiru Ren
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Ultrasonics, 2023
The development of structural health monitoring (SHM) techniques is of great importance to improve the structural efficiency and safety. With advantages of long propagation distances, high damage sensitivity, and economic feasibility, guided-ultrasonic ...
Zhengyan Yang +11 more
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The development of structural health monitoring (SHM) techniques is of great importance to improve the structural efficiency and safety. With advantages of long propagation distances, high damage sensitivity, and economic feasibility, guided-ultrasonic ...
Zhengyan Yang +11 more
semanticscholar +1 more source
Structural Engineering and Mechanics, 2015
In this work, various higher-order shear deformation plate theories for wave propagation in functionally graded plates are developed. Due to porosities, possibly occurring inside functionally graded materials (FGMs) during fabrication, it is therefore ...
Sihame Ait Yahia +3 more
semanticscholar +1 more source
In this work, various higher-order shear deformation plate theories for wave propagation in functionally graded plates are developed. Due to porosities, possibly occurring inside functionally graded materials (FGMs) during fabrication, it is therefore ...
Sihame Ait Yahia +3 more
semanticscholar +1 more source
Fundamentals of Wave Propagation
2004The most important qualitative statements about wave propagation can be deduced by experiences of every day life. When observing temporary, often repeated sound incidents (e.g. a child rhytmically bouncing a ball, hammers blowing at a construction site, etc.) a time-delay can easily be determined between the optical perception and the arrival of the ...
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1979
Abstract : There were a number of significant accomplishments during the past 3 years. In this period, 12 papers were published in refereed journals, 4 papers were published as chapters in books and conference proceedings, 7 papers were accepted for publication, and 28 invited lectures were presented.
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Abstract : There were a number of significant accomplishments during the past 3 years. In this period, 12 papers were published in refereed journals, 4 papers were published as chapters in books and conference proceedings, 7 papers were accepted for publication, and 28 invited lectures were presented.
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Simulating seismic wave propagation in 3D elastic media using staggered-grid finite differences
Bulletin of The Seismological Society of America (BSSA), 1996This article provides an overview of the application of the staggered-grid finite-difference technique to model wave propagation problems in 3D elastic media. In addition to presenting generalized, discrete representations of the differential equations
R. Graves
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2003
Abstract This chapter investigates some aspects of wave propagation with a major focus on the effects of linear constitutive properties (functions or functionals). A detailed analysis of time-harmonic waves in uniform materials is given and classical topics on plane waves are re-visited, such as waves in magneto-hydrodynamics or in ...
Mauro Fabrizio, Morro Angelo
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Abstract This chapter investigates some aspects of wave propagation with a major focus on the effects of linear constitutive properties (functions or functionals). A detailed analysis of time-harmonic waves in uniform materials is given and classical topics on plane waves are re-visited, such as waves in magneto-hydrodynamics or in ...
Mauro Fabrizio, Morro Angelo
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2015
Abstract This chapter is an introduction to wave phenomena and propagation in linear media. The existence of travelling waves and the dymanics of wave packets are studied. The dispersion equation, phase speed, group speed, the uncertainty principle, and energy transport relations are analysed in detail.
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Abstract This chapter is an introduction to wave phenomena and propagation in linear media. The existence of travelling waves and the dymanics of wave packets are studied. The dispersion equation, phase speed, group speed, the uncertainty principle, and energy transport relations are analysed in detail.
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The Physics Teacher, 2001
Before relativity and quantum theory, a classical model of wave propagation was developed by Huygens, Fresnel, Maxwell, and Kirchhoff that provides insight into why propagation is linear and why the refractive index is usually, but not always, greater than 1. The model also explains other phase shifts that can be experimentally verified.
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Before relativity and quantum theory, a classical model of wave propagation was developed by Huygens, Fresnel, Maxwell, and Kirchhoff that provides insight into why propagation is linear and why the refractive index is usually, but not always, greater than 1. The model also explains other phase shifts that can be experimentally verified.
openaire +1 more source