Results 151 to 160 of about 12,646 (189)
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Axial stress determination using highly nonlinear solitary waves
The Journal of the Acoustical Society of America, 2018This article presents a nondestructive evaluation (NDE) method to infer the neutral temperature and the axial stress in thick beams. The method relies on the propagation of highly nonlinear solitary waves generated at one end of a chain of spherical particles in a dry point contact with the beam to be evaluated.
Amir, Nasrollahi, Piervincenzo, Rizzo
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Nondestructive testing of concrete using highly nonlinear solitary waves
Nondestructive Testing and Evaluation, 2016AbstractIn this article, we describe the capability of a nondestructive evaluation (NDE) method at determining the strength of concrete surfaces. The method uses highly non-linear solitary waves (HNSWs) propagating inside a metamaterial in contact with the concrete to be tested.
Amir Nasrollahi +4 more
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Highly nonlinear solitary waves in chains of cylindrical particles
Granular Matter, 2011We study the dynamic response of uniform gran- ularchainscomposedofshortcylindricalparticlesexcitedby animpulse.Theparticlesinthechainsarearrangedwiththeir axesorthogonaltothechain'saxis,andtheparticlesmaintain a constant relative orientation angle. We study the formation and propagation of solitary waves in the chains varying the orientation angle (α)
Khatri, Devvrath +2 more
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Laser induced highly nonlinear solitary waves for structural NDE
SPIE Proceedings, 2010This paper describes the generation and propagation of highly nonlinear solitary waves (HNSWs) in a chain of steel beads excited by means of laser pulses. Ablative generation of mechanical stress was induced on the bead at one end of the chain in order to enhance the amplitude of the stress waves generated. Compared to the use of a mechanical striker,
Xianglei Ni +2 more
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Interaction of highly nonlinear solitary waves with large plates
2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 2015Due to geometric nonlinearity, stress waves of one-dimensional granular chains behave as highly nonlinear solitary waves. Those waves can support a high level of amplitude over a long distance and have an important engineering value for detecting structure properties. Deflection can be caused by the impact of a granular bead with large plates. Based on
Liu Yang, Yan Wang, Yi Xie
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Highly nonlinear solitary waves-based sensor for monitoring concrete
SPIE Proceedings, 2011This paper describes the application of a novel actuator/sensor technology for monitoring concrete at early age. A device is designed to generate and detect highly nonlinear solitary waves (HNSWs) in a chain of steel beads. Two experiments were conducted. In the first experiment, the propagation of the HNSWs in the chain was recorded. In particular,
Xianglei Ni +3 more
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Highly Nonlinear Solitary Waves for the NDT of slender beams
2015Slender beams subjected to compressive load are common in civil engineering. The rapid in-situ measurement of this stress may help preventing structural anomalies. In this article we describe the coupling mechanism between Highly Nonlinear Solitary Waves (HNSWs) propagating along a granular system in contact with a beam subjected to thermal stress.
RIZZO, PIERVINCENZO +2 more
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Highly Nonlinear Solitary Waves to Estimate Orientation and Degree of Anisotropy in Rocks
Materials Evaluation, 2021This paper delves into the use of highly nonlinear solitary waves for the nondestructive identification and characterization of anisotropy in rocks. The nondestructive testing approach proposed expands upon a technique developed recently by some of the authors for the nondestructive characterization of engineering materials and structures.
Hoda Jalali +3 more
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Weak bond detection in composites using highly nonlinear solitary waves
Smart Materials and Structures, 2017We experimentally investigate a diagnostic technique for identifying a weak bond in composites using highly nonlinear solitary waves (HNSWs). We set up a one-dimensional chain of granular crystals, consisting of spherical particles with nonlinear interactions, to generate HNSWs.
Taru Singhal +3 more
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Highly dispersive solitary wave solutions of perturbed nonlinear Schrödinger equations
Applied Mathematics and Computation, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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