Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3064129
Keywords
acoustic wave interferometry; concrete; elastic constants; elastic moduli measurement
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Funding
- French Research National Agency and ElectricitE De France (EDF)
- U. S. DOE Office of Basic Energy Science.
- Laboratoire de Mecanique et d'Acoustique [CNRS UPR 7051]
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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 structurally heterogeneous and volumetrically mechanically damaged material, is an example of a class of materials that exhibit strong multiple scattering as well as significant elastic nonlinear response. We show that intense scattering can be applied to robustly determine velocity changes at progressively increasing applied stress using coda wave interferometry, and thereby extract nonlinear coefficients.
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