Results 21 to 30 of about 30,646 (259)
Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials
CrystalsMetamaterials enable the modulation of elastic waves or acoustic waves in unprecedented ways and have a wide range of potential applications. This paper achieves the simultaneous manipulation of surface elastic waves (SEWs) and surface acoustic waves ...
Chang Fu, Tian-Xue Ma
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AIP Advances, 2021 The propagation of surface acoustic waves in two types of tunable magneto-electro-elastic phononic crystal structures is investigated, for which Terfenol-D rods are vertically deposited on the piezoelectric substrate or embedded in the piezoelectric ...
Jianying Hu +4 more
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PASSIV WIRELESS CURENT SENSOR FOR THREE-PHASE CIRCUTS
Вестник Северо-Кавказского федерального университета, 2022 Studies on passive wireless current sensors for three-phase circuits based on delay lines on surface acoustic waves are presented. The design of a passive wireless sensor on surface acoustic waves is proposed, in which there is a strong dependence of the
V. Kislitsyn +4 more
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Effects of surface ship motion attitude on acoustic scattering characteristics
Zhongguo Jianchuan Yanjiu, 2023 ObjectivesIn order to further improve the accuracy of torpedoes in the acoustic homing identification of complex surface targets, a simulation study on the acoustic scattering characteristics of surface ship motion attitudes in random waves is carried ...
Yan LIU +4 more
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
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Broadband reflected wavefronts manipulation using structured phase gradient metasurfaces
AIP Advances, 2016 Acoustic metasurface (AMS) is a good candidate to manipulate acoustic waves due to special acoustic performs that cannot be realized by traditional materials. In this paper, we design the AMS by using circular-holed cubic arrays.
Xiao-Peng Wang +4 more
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Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
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Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
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Plasmonic lattice excitation of surface acoustic waves in silicon photonic circuits
APL PhotonicsSurface acoustic waves enable long group delays and narrowband analog filtering on-chip, which are difficult to obtain with fast-moving electromagnetic waves.
Leroy Dokhanian +6 more
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Determination of structure ordering parameters in subsurface layers of condensed state materials by AMD-methods [PDF]
MATEC Web of Conferences, 2020 The results of studies of solid-state materials using AMD-methods are presented. It is shown that, regardless of the type of structure of the studied materials and their nature, acoustic waves provide subsurface images.
Kustov Alexander +3 more
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