Caisson Evaluation by Stress Wave Propagation Method

Steinbach, Joav; Vey, Eben

doi:10.1061/ajgeb6.0000161

Cited by 26 publications

(4 citation statements)

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“…Thus, if Poisson's ratio is known, the measured R-wave velocity can be used to estimate the P-wave velocity [83]. For Poisson's ratio of 0.2, the R-wave velocity is 56 percent of the P-wave velocity.…”

Section: Wave Velocitymentioning

confidence: 99%

“…If the wavelength of the propagating wave is less than the size of the aggregate, this mismatch in impedances causes scattering of the incident wave as the waves undergo reflection and refraction from each mortar-aggregate interface [83]. For higher quality concrete the specific acoustic impedance of the mortar approaches that of the coarse aggregate and scattering is reduced.…”

Section: Attenuation and Divergencementioning

confidence: 99%

“…Since the early 1970's, impact-echo and resonance techniques have been widely used for integrity testing of concrete piles [3,12,24,25,36,37,61,62,67,81,83,90].…”

Section: Pilesmentioning

confidence: 99%

“…Steinbach and Vey [83] were among the first to apply impact-echo techniques to field evaluation of piles.…”

Section: Pilesmentioning

confidence: 99%

See 3 more Smart Citations

Impact-echo :

Sansalone¹,

Carino²

1986

154

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To develop a basis for a nondestructive test method for heterogenous solids such as concrete, analytical, numerical, and laboratory studies of transient stress wave propagation in solid plates and in plates containing flaws are presented. The technique, which is referred to as the impact-echo method, involves introducing transient stress waves into a test object by mechanical point impact and monitoring reflections of the waves from internal defects and external boundaries using a point receiver located close to the impact point . Introduct ion 1 1.2 Objectives and Scope of Research 1.2.1 Objectives 1.2.2 Scope CHAPTER 2: BACKGROUND 2.1 Basic principles of elastic wave propagation 2.1.1 Wave types 2.1.2 Wave velocity 2.1.3 Reflection and refraction 2.1.4 Diffraction at a crack tip 2.1.5 Attenuation and divergence 2.2 Stress pulses created by elastic impact 2.2.1 Hertz theory of elastic impact CHAPTER 3: REVIEW OF PREVIOUS APPLICATIONS OF ECHO TECHNIQUES TO CONCRETE 21 3.1 24 3.3.1 Pavements and bridge decks 24 3.3.2 Erosion cavities under slabs and behind walls 3.3.3 Dams 3.3.4 Piles 3.3.5 Reactor structures

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Section: Wave Velocitymentioning

confidence: 99%

Section: Attenuation and Divergencementioning

confidence: 99%