Results 201 to 210 of about 1,378,435 (241)

Lamb waves and lamination detection

Ultrasonics, 1967
Abstract 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

Rayleigh and Lamb Waves on Cylinders

The Journal of the Acoustical Society of America, 1969
Acoustic waves propagating on the surface of solid and hollow elastic cylinders immersed in water were observed and their characteristics shown to be consistent with theory. These waves were excited by an 11-μsec pulse, projected onto the cylindrical surface at an excitation angle given by sin 1(co/cs), where co is the velocity of sound in water and cs
R. E. Bunney, R. R. Goodman, S. W. Marshall   +2 more
openaire   +1 more source

Subsonic lamb waves in anisotropic layers

Journal of Applied Mathematics and Mechanics, 2001
According 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

Activating and Receiving Lamb Waves

2009
Over 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

Fundamentals and Analysis of Lamb Waves

2009
The antecedent work on Lamb waves is not hard to identify. It was Lord Rayleigh in 1889 who first explained wave propagation along a guided surface [1], and the waves are known as Rayleigh waves today. Following Rayleigh’s work, Horace Lamb, a British applied mathematician, reported the waves discovered in plates in one of his historic publications, On
Zhongqing Su, Lin Ye
openaire   +1 more source

Lamb wave-based acoustofluidics

The Journal of the Acoustical Society of America
Both 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

Experimental investigation of the surface corrosion damage in plates based on nonlinear Lamb wave methods

NDT and E International, 2021
Youxuan Zhao, Mingxi Deng, Caibin Xu
exaly  

FRF-based lamb wave phased array

Mechanical Systems and Signal Processing, 2022
Xuefeng Chen, Zhibo Yang, Yanfeng Lang   +2 more
exaly  

Rayleigh and Lamb Waves

Ultrasonics, 1967
openaire   +2 more sources

Damage assessment using the Lamb wave factorization method

Mechanical Systems and Signal Processing, 2023
Liang Zeng
exaly