Characterization of cast irons by leaky Rayleigh surface acoustic waves

2021 ◽  
pp. 275-282
Author(s):  
S.E. Kruger ◽  
J. Charlier ◽  
J.M.A. Rebello
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Cast Irons

Characterization of RF Sputtered ZnO Piezoelectric Films Using Transmission Electron Microscope

1975 ◽  
Vol 33 ◽  
pp. 86-87
Author(s):  
Kemining W. Yeh ◽  
Richard S. Muller ◽  
Wei-Kuo Wu ◽  
Jack Washburn
Keyword(s):  
Integrated Circuit ◽  
Acoustic Waves ◽  
New Technology ◽  
Surface Acoustic Waves ◽  
Electromechanical Properties ◽  
Leading Role ◽  
Saw Devices ◽  
Transmission Electron ◽  
High Degree

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.

scholarly journals Highly Sensitive Surface Acoustic Wave Magnetic Field Sensor Using Multilayered TbCo2/FeCo Thin Film

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 902 ◽  
Author(s):  
Aurelien Mazzamurro ◽  
Abdelkrim Talbi ◽  
Yannick Dusch ◽  
Omar Elmazria ◽  
Philippe Pernod ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Magnetic Field Sensor ◽  
Nanostructured Thin Film ◽  
Highly Sensitive ◽  
Magnetic Model ◽  
Field Sensor

Over the last decades, the use of Surface Acoustic Waves (SAW) has emerged as a promising technology in many applications such as filters, signal processing but also sensors. We report the fabrication and the characterization of a SAW delay line magnetic field sensor using uniaxial multi-layered 14×[TbCo2(3.7nm)/FeCo(4nm)] nanostructured thin film deposited on Y36° Lithium Niobate (Figure 1a). The sensor shows an interesting dependency to a tunable bias magnetic field with different orientations relative to the easy axis. The obtained results are well explained using an equivalent piezo-magnetic model described in a previous work.

Characterization of EUV induced carbon films using laser-generated surface acoustic waves

2009 ◽  
Vol 18 (5-8) ◽  
pp. 768-771 ◽  
Author(s):  
Juequan Chen ◽  
Chris J. Lee ◽  
Eric Louis ◽  
Fred Bijkerk ◽  
Reinhard Kunze ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Carbon Films

Characterization of micrometric and superficial residual stresses using high frequency surface acoustic waves generated by interdigital transducers

2013 ◽  
Vol 134 (6) ◽  
pp. 4360-4371 ◽  
Author(s):  
Marc Duquennoy ◽  
Mohammadi Ouaftouh ◽  
Julien Deboucq ◽  
Jean-Etienne Lefebvre ◽  
Frederic Jenot ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Acoustic Waves ◽  
High Frequency ◽  
Surface Acoustic Waves

scholarly journals Characterization of surface acoustic waves by stroboscopic white-light interferometry

2015 ◽  
Vol 23 (8) ◽  
pp. 9690 ◽  
Author(s):  
Kimmo Kokkonen ◽  
Lauri Lipiäinen ◽  
Igor Shavrin ◽  
Steffen Novotny ◽  
Matti Kaivola ◽  
...  
Keyword(s):  
White Light ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
White Light Interferometry

The converging-surface-acoustic-wave technique: anaylsis and applications to nondestructive evaluation

1986 ◽  
Vol 64 (9) ◽  
pp. 1324-1329 ◽  
Author(s):  
P. Cielo ◽  
C. K. Jen ◽  
X. Maldague
Keyword(s):  
Acoustic Waves ◽  
Laser Interferometer ◽  
Surface Acoustic Waves ◽  
Pulsed Laser ◽  
Ultrasonic Pulse ◽  
Planar Defects ◽  
Wave Technique ◽  
Pulse Arrival ◽  
Pulsed Laser Beam

Converging surface-acoustic waves (SAW) are generated by irradiating the inspected material with an annular-shaped pulsed laser beam. The converging-SAW pulse arrival is detected by a laser interferometer focused on the center of the annulus, where the converging effect produces a strong amplification of the ultrasonic pulse. This technique can be applied either to the detection of defects or to the characterization of the material by measuring the SAW velocity or attenuation. In this paper we present an analysis of the converging-wave propagation in order to explain some features of the detected signal, such as its shape and amplitude for different positions of the probing beam. A comparison with the signal intensities expected for a diverging as well as a collimated SAW is also presented. Applications of this technique to the characterization of anisotropic materials as well as to the detection of subsurface planar defects are presented and discussed.

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