Results 21 to 30 of about 5,705,389 (145)
Observations of acoustic emission activity during gear defect diagnosis. [PDF]
, 2003 It is widely recognised that acoustic emission (AE) is gaining ground as a non- destructive technique (NDT) for health diagnosis on rotating machinery.
Mba, David +3 more
core +1 more source
Investigation of bulk acoustic microwaves excited by an interdigital transducer
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015 Excitation of bulk and surface acoustic waves with the interdigital transducer (IDT), which is deposited on the surface of a piezoelectric crystal, is widely used in the development of devices in acoustoelectronics and in the design of the microwave ...
O. G. Reshotka +2 more
doaj +1 more source
Detection of cracks in metal sheets using pulsed laser generated ultrasound and EMAT detection [PDF]
, 2011 A pulsed Nd: YAG laser with an approximately Gaussian beam shape is directed onto the surface of an aluminium sheet at an energy density below which damage by laser ablation occurs, generating Lamb waves in the sheet.
Dixon, S. +3 more
core +1 more source
Temperature-controlled acoustic surface waves
New Journal of Physics, 2016 Conventional approaches to the control of acoustic waves propagating along boundaries between fluids and hard grooved surfaces are limited to the manipulation of surface geometry.
Norbert Cselyuszka +3 more
doaj +1 more source
Modeling and simulation of the mixing process of fluids in microchannels promoted by acoustic streaming [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Lanceros-Mendez, S +4 more
core +5 more sources
Dispersion of surface acoustic waves in thin films at extreme wavelength-to-thickness ratios [PDF]
JASA Express Letters, 2022 Surface acoustic waves (SAWs) are sensitive to the presence of a layer on the surface of a material, even if this layer is extremely thin compared to their wavelengths. Given the very slow propagation velocities of SAWs compared to electromagnetic waves,
Marc Duquennoy +4 more
doaj +1 more source
Surface Acoustic Wave Induced Heat Knockdown of Caenorhabditis Elegans
Hittite Journal of Science and Engineering, 2021 Model organisms such as Caenorhabditis elegans are commonly used in discovering theunderlying mechanisms of human diseases. The field of microfluidics enables a plethora of tools for better studying these organisms.
Adem Özçelik
doaj +1 more source
Bending and splitting of spoof surface acoustic waves through structured rigid surface
Results in Physics, 2018 In this paper, we demonstrated that a 90°-bended imaging of spoof surface acoustic waves with subwavelength resolution of 0.316λ can be realized by a 45° prism-shaped surface phononic crystal (SPC), which is composed of borehole arrays with square ...
Sujun Xie +5 more
doaj +1 more source
AIP Advances, 2018 A tunable and multi-functional one-dimensional metasurface, which is formed by engraving periodic semi-ellipse grooves on the surface of an aluminum half-space, is proposed in this paper. One characteristic of the metasurface is the manipulation of multi-
Si-Min Yuan +3 more
doaj +1 more source
Frontiers in Physics, 2022 Nonreciprocal microwave devices are key components of communication platforms. Nonreciprocity can arise in chiral systems, where chirality refers to a fixed handedness that is preserved under time reversal.
Matthias Küß +2 more
doaj +1 more source