Results 221 to 230 of about 141,866 (259)
Some of the next articles are maybe not open access.
Subsonic lamb waves in anisotropic layers
Journal of Applied Mathematics and Mechanics, 2001According to \textit{H. Lamb} [Proc. Roy. Soc. London. Ser. A. 93, No. 648, 114-128 (1917)] a harmonic wave consists of several partial waves of the form \[ u_k = m_ke^{ir\gamma_k x\cdot v}e^{ir(n\cdot x -ct}.\tag{1} \] The author shows that in the case of the Lamb wave propagating with subsonic velocity in anisotropic layers the representation (1 ...
openaire +2 more sources
Lamb waves and lamination detection
Ultrasonics, 1967Abstract Lamb waves at the fundamental, and of higher orders, can be excited with sufficient intensity for lamination detection in thick plates if large-area probes and long acoustic pulses are used. Hot-rolled steel plates up to 16mm in thickness can be tested, and clear and unambiguous results obtained.
E. Lehfeldt, P. Höller
openaire +1 more source
Lamb wave-based acoustofluidics
The Journal of the Acoustical Society of AmericaBoth bulk acoustic wave (BAW) and surface acoustic wave (SAW) acoustofluidic technologies have been widely utilized for particle manipulation. However, within fluid, these waves tend to propagate as bulk waves or leaky bulk waves, resulting in undesirable acoustic streaming that causes unstable particle manipulation.
Feiyan Cai, Jiaqi Liu, Hairong Zheng
openaire +1 more source
IEEE Symposium on Ultrasonics, 2002
Initial experiments and theory describing the operation of gel-coated Lamb wave sensors are described. The lowest-order flexural Lamb wave can propagate in gel-coated plates with low attenuation. This allows some novel sensing approaches to be investigated, such as: using gels as filters for larger particles and molecules, while allowing smaller ...
B.J. Costello +3 more
openaire +1 more source
Initial experiments and theory describing the operation of gel-coated Lamb wave sensors are described. The lowest-order flexural Lamb wave can propagate in gel-coated plates with low attenuation. This allows some novel sensing approaches to be investigated, such as: using gels as filters for larger particles and molecules, while allowing smaller ...
B.J. Costello +3 more
openaire +1 more source
Proceedings of 2nd International Electronic Conference on Sensors and Applications, 2015
Acoustic Lamb Wave microsensors are suitable for label free sensing in liquid. The device relies on the interaction between acoustic waves propagating within a thin membrane and the liquid. Lamb wave sensors have been previously studied using AlN/Si structure to detect multi-parameters of a liquid, such as its temperature, density, sound velocity and ...
Jean-Francois Manceau +3 more
openaire +1 more source
Acoustic Lamb Wave microsensors are suitable for label free sensing in liquid. The device relies on the interaction between acoustic waves propagating within a thin membrane and the liquid. Lamb wave sensors have been previously studied using AlN/Si structure to detect multi-parameters of a liquid, such as its temperature, density, sound velocity and ...
Jean-Francois Manceau +3 more
openaire +1 more source
Multi-parameter Lamb wave tomography
KSME International Journal, 2000This work shows that it is possible to obtain information about more than one parameter from acoustic field information. A variety of ultrasonic Lamb wave modes were utilized to reconstruct thickness and density of an isotropic plate. An image reconstruction of one parameter (thickness of a plate) was carried out for four cases, i.e., the lowest ...
Jae-Seung Choi, Ronald A. Kline
openaire +1 more source
Activating and Receiving Lamb Waves
2009Over the past few decades there have been substantial advances in the design and development of functional materials. Many of the products, piezoelectric materials for example, have been widely used to build a variety of transducers for activating and receiving Lamb waves.
Zhongqing Su, Lin Ye
openaire +1 more source
Thermoelastic Coupling to Lamb Waves
IEEE 1986 Ultrasonics Symposium, 1986We consider the thermoelastic generation of Lamb waves produced by incidence of a light beam on a solid plate. In addition to the variables relevant for thermoelastic SAW generation -- frequency and the optical, thermal, and acoustical properties of the materials used -- one has the plate thickness and mode type (symmetric, anti-symmetric).
openaire +1 more source
Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies
Living Reviews in Relativity, 2021Odylio D Aguiar +2 more
exaly