On the acoustoelastic effect
Web20 de mar. de 2024 · Abstract. The work is devoted to study of acoustoelastic effect in case of elasto-plastic deformation of initially anisotropic metals. The velocities of bulk shear waves under monotonic growth of inelastic deformations were experimentally studied. The values of acoustic anisotropy for cold-rolled aluminum sheet were obtained. Web15 de set. de 2024 · Based on the L cr wave acoustoelastic effect, surface stress of laser cladding Fe314 alloy coating after ultrasonic impact treat (UIT) was measured, and relation between L cr wave acoustoelastic coefficient and repetition rate of UIT was discussed in this paper. The laser cladding Fe314 alloy coating was prepared on surface of carbon …
On the acoustoelastic effect
Did you know?
Web14 de jul. de 2024 · This paper presents experimental studies to evaluate stress levels in concrete based on the acoustoelastic effect. Direct P … Web12 de set. de 2012 · Acoustoelasticity, or the change in elastic wave speeds with stress, is a well-studied phenomenon for bulk waves. The effect of stress on Lamb waves is not as well understood, although it is clear that anisotropic stresses will produce anisotropy in the Lamb wave dispersion curves. Here the theory of acoustoelastic Lamb wave propagation is …
WebAn improved ultrasonic method was developed theoretically and experimentally for plane stress measurement using critically refracted longitudinal (LCR) waves. Cruciform specimen method, combined with a digital image correlation (DIC) method, was applied to confirm the validity of this method. Based on the acoustoelastic theory, LCR waves with arbitrary … WebAbstract: This paper reports, for the first time, the sensitivity deterioration phenomenon of surface acoustic wave (SAW) sensors for distortion, load, or pressure monitoring. …
Web26 de jul. de 2005 · Finally, it is shown how the variation of sound speeds with initial stress and the measured magnitude of the acoustoelastic effect can be used to determine the third‐order elastic constants of an isotropic material and as a partial confirmation and experimental check of the theory. The acoustoelastic effect is how the sound velocities (both longitudinal and shear wave velocities) of an elastic material change if subjected to an initial static stress field. This is a non-linear effect of the constitutive relation between mechanical stress and finite strain in a material of continuous mass. In classical linear … Ver mais The acoustoelastic effect is an effect of finite deformation of non-linear elastic materials. A modern comprehensive account of this can be found in. This book treats the application of the non-linear elasticity theory and … Ver mais A cuboidal sample of a compressible solid in an unstressed reference configuration can be expressed by the Cartesian coordinates Ver mais Engineering material – stress estimation As the industry strives to reduce maintenance and repair costs, non-destructive testing of structures becomes increasingly valued … Ver mais To be able to measure the sound velocity, and more specifically the change in sound velocity, in a material subjected to some stress state, one can measure the velocity of an acoustic signal … Ver mais • Acoustoelastography • Finite strain • Sound velocity Ver mais
Web1 de mar. de 1981 · The acoustoelastic effect is investigated for the Rayleigh surface wave propagating in a homogeneous isotropic material. The initial deformations considered are uniform and nonuniform only in the direction of depth. The formulas for the velocity change versus the change in the applied static stress are derived in the first-order approximation. …
WebThere are currently more than 130,000 prestressed concrete bridges in the United States and approximately 37,000 of these bridges are more than 30 years old. Steel tendons … t shirt bedrucken winterthurWeb28 de nov. de 2024 · This paper presents experimental evidences of the dependence of the acoustoelastic sensitivity on the wave excitation frequency in steel 1018 bars. The … philosophia forlagWeb1 de nov. de 2004 · Osetrov et al. (2002) studied the acoustoelastic effect of Love modes propagating in the layered Ge/Si(0 0 1) system on the basis of the state space approach suggested by Fahmy and Adler.In this paper, we attempt to investigate the acoustoelastic effect of surface acoustic waves in Ge films on Si substrates. t shirt beerusWebAbstract : The acoustoelastic effect for Rayleigh waves on the inner diameter of a right circular steel cylinder was investigated. The velocity dependence on stress was studied as a function of frequency. As expected, the change in velocity was proportional to the applied stress at the surface. As a result of the nonuniformity of the applied stress field, however, … philosophia factitataWeb1 de nov. de 2010 · The most sensitive waves to stress level are the longitudinal and transversal waves polarized along the loading direction. Acoustoelastic constants have … t shirt beflocken onlineWeb10 de abr. de 2024 · Acoustoelastic Effect. R. A. Toupin and B. Bernstein. ... We propose a modification of the standard acoustoelastic theory, introducing the concept of conditioning induced non-equilibrium strain, which allows us to predict the evolution of elastic wave velocity in both quasi-static and dynamic ranges, ... philosophia berartiWeb26 de ago. de 1998 · A simple method is presented for obtaining the stress tensor for small displacements in nonlinearly strained material. The physics of sonic wave propagation in … philosophia hermetica