Propagation characteristics of SH ultrasonic waves through the surface depth of an isotropic medium

Fukuhara, Mikio; Kuwano, Yoshiyuki

doi:10.1016/s0963-8695(97)00040-6

Cited by 14 publications

(7 citation statements)

References 19 publications

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“…The diffraction of the waves is based on the Huygens-Fresnel's principle. 19,20) Thus, the refracting phenomenon 21) by the residual stress field, i.e., the propagat- ing path shift, should be considered for an analysis of the variation in the propagation time. In other words, in the diffraction method, the variation of the propagation time does not indicate the velocity change directly.…”

Section: Discussionmentioning

confidence: 99%

Residual Stress Behavior of Rolled Aluminum Alloy A2024T3 in a Thin Plate During Cyclic-Tension Fatigue Studied Using Ultrasonic Horizontally Polarized Shear Waves

2010

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The cyclic-tension fatigue in a rolled thin-plate of aluminum alloy Al-4Cu-1Mg was evaluated nondestructively using a horizontally polarized shear wave (SH) transmission method under optimized measuring and analyzing conditions. The propagation time of the SH waves, which contained elements of reflected waves, had three distinct stages, the first, middle and final ones, during the fatigue process. The variation of the propagation time was dominated by the residual-stress field during the fatigue progress, as an acoustoelastic effect. The change in the stage of the variation can be elucidated by balance points for the redistribution of the residual stress, which clearly told us the degree of progression of the fatigue in the thin plate.

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Section: Discussionmentioning

confidence: 99%

Residual Stress Behavior of Rolled Aluminum Alloy A2024T3 in a Thin Plate During Cyclic-Tension Fatigue Studied Using Ultrasonic Horizontally Polarized Shear Waves

2010

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“…[24] Figure 1(e) represents the variation in the amplitude with the six kinds of slit depth. Here, the slits were arranged in the middle of the bridge gap and the amplitudes were normalized by the slit depth of 0 mm.…”

Section: Sh Methodsmentioning

confidence: 99%

Cyclic-Tension Fatigue Behavior in a Rolled AZ31B Magnesium Alloy Studied Using Ultrasonic Shear Waves

Yamagishi

Fukuhara

Matsumoto

et al. 2010

Metall Mater Trans A

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HIDEKI YAMAGISHI, MIKIO FUKUHARA, HIROAKI MATSUMOTO, and AKIHIKO CHIBA Nondestructive evaluation of cyclic-tension fatigue in a rolled magnesium alloy, Mg-3Al-1Zn, was performed using vertically polarized shear wave (SV) reflection and shear horizontal wave (SH) transmission methods. Internal friction measured by SV reflection increased rapidly in the early stages of the fatigue and finally saturated, showing dominating interactions of movable dislocations and twinning boundaries with the waves as acoustic nonlinearities. The propagation time and logarithmic damping ratio in the SH transmission method followed a repeated increase and subsequent sudden decrease pattern, and finally converged toward fatigue failure due to acoustoelasticity, which represents the interaction with residual stresses. The wave and phase data were determined using an optical microscope, a scanning electron microscope, a surface roughness tester, and X-ray diffraction. The results demonstrated that during the fatigue process, residual stress accumulated on the compressive side of the specimen, despite the applied cyclic-tension loading. Brittle cracks that originated in inclusions provided sudden relief from the residual stress.

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“…SH waves were generated by reflection from a transverse wave PZT {Pb(Zr x Ti 1 − x )O 3 } transducer to a polymer wedge. Approximately 70% of the SH wave energy reaches a depth of 2 mm in mild and hardened steels [12]. A frequency of 5 MHz was selected in order to prevent propagation loss due to high frequency and signal broadening due to low frequency.…”

Section: Methodsmentioning

confidence: 99%

Acoustic analysis of the amorphous phase of annealed Zr55Cu30Ni5Al10 glassy alloy, using diffracted SH ultrasonic waves

Fukuhara¹,

Wang²,

Inoue³

2010

Journal of Non-Crystalline Solids

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Propagation characteristics of SH ultrasonic waves through the surface depth of an isotropic medium

Cited by 14 publications

References 19 publications

Residual Stress Behavior of Rolled Aluminum Alloy A2024T3 in a Thin Plate During Cyclic-Tension Fatigue Studied Using Ultrasonic Horizontally Polarized Shear Waves

Residual Stress Behavior of Rolled Aluminum Alloy A2024T3 in a Thin Plate During Cyclic-Tension Fatigue Studied Using Ultrasonic Horizontally Polarized Shear Waves

Cyclic-Tension Fatigue Behavior in a Rolled AZ31B Magnesium Alloy Studied Using Ultrasonic Shear Waves

Acoustic analysis of the amorphous phase of annealed Zr55Cu30Ni5Al10 glassy alloy, using diffracted SH ultrasonic waves

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