Monitoring stress changes in a concrete bridge with coda wave interferometry.

@article{Stahler2011MonitoringSC,
  title={Monitoring stress changes in a concrete bridge with coda wave interferometry.},
  author={Simon C. Stähler and Christoph Sens‐Sch{\"o}nfelder and Ernst Niederleithinger},
  journal={The Journal of the Acoustical Society of America},
  year={2011},
  volume={129 4},
  pages={
          1945-52
        }
}
Coda wave interferometry is a recent analysis method now widely used in seismology. It uses the increased sensitivity of multiply scattered elastic waves with long travel-times for monitoring weak changes in a medium. While its application for structural monitoring has been shown to work under laboratory conditions, the usability on a real structure with known material changes had yet to be proven. This article presents experiments on a concrete bridge during construction. The results show that… 

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The potential application of CWI to different types of concrete mesostructures and their damage levels is investigated numerically, and recommendations are given for a potential application in concrete at structural scale.

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Stresses in structures are usually converted by measured strains based on corresponding constitutive relations of materials. However, it is difficult to determine the constitutive relation of the

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Reinforced concrete bridges are iconic parts of modern infrastructure. They are designed for a minimum service life of 100 years. However, environmental factors and/or inappropriate use might cause
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References

SHOWING 1-10 OF 33 REFERENCES

Time‐lapse monitoring of rock properties with coda wave interferometry

[1] The coda of seismic waves consists of that part of the signal after the directly arriving phases. In a finite medium, or in one that is strongly heterogeneous, the coda is dominated by waves

Observation of multiple scattering of kHz vibrations in a concrete structure and application to monitoring weak changes.

The first experiment is devoted to the observation of the coherent backscattering enhancement, which demonstrates the presence of multiple diffractions in the late part of the wave records, which is the first step to other applications like stress, damage, aging, or crack monitoring in concrete structures.

Coda Wave Interferometry for Estimating Nonlinear Behavior in Seismic Velocity

The nonlinear dependence of the seismic velocity in granite on temperature and the associated acoustic emissions is determined using coda wave interferometry.

The Theory of Coda Wave Interferometry

Coda waves are sensitive to changes in the subsurface because the strong scattering that generates these waves causes them to repeatedly sample a limited region of space. Coda wave interferometry is

Temporal changes in the lunar soil from correlation of diffuse vibrations.

Using seismic waves recorded on the moon, it is shown that not only direct waves can be retrieved, but also late arrivals that have been scattered before reaching the seismometers, which is used to monitor periodic velocity changes in the lunar soil.

Monitoring stress related velocity variation in concrete with a 2 x 10(-5) relative resolution using diffuse ultrasound.

In this manuscript, the effect of weak stress changes on the late arrivals constituting the acoustic diffuse coda is tracked and provides an original way to measure the non-linear parameter with stress variations on the order of tens of kPa.

Nondestructive Investigation of Stress-Induced Damage in Concrete

The changes in the sonic surface wave velocity of concrete under stress were investigated in this paper. Surface wave velocities at sonic frequency range were measured on a prismatic concrete

Determination of third order elastic constants in a complex solid applying coda wave interferometry

In this letter we describe the development of coda wave interferometry to determine acoustoelastically derived third order nonlinear coefficients of a highly complex material, concrete. Concrete, a

Stability of monitoring weak changes in multiply scattering media with ambient noise correlation: laboratory experiments.

Present results show that temperature changes in the medium can be observed even if the GF of the medium is not reconstructed, and establishes that the GF reconstruction in the correlations is not a necessary condition.

A field investigation of source parameters for the sledgehammer

We examined amplitude and frequency changes in shallow seismic-reflection data associated with simple source-parameter modifications for the sledgehammer. Seismic data acquired at three sites with