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Proceedings Paper

Highly nonlinear solitary waves to estimate the modulus of concrete with different water-to-cement ratios
Author(s): Amir Nasrollahi; Wen Deng; Piervincenzo Rizzo
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Paper Abstract

We describe the feasibility of a nondestructive evaluation (NDE) method for concrete based on the propagation of highly nonlinear solitary waves (HNSWs) along a one-dimensional chain of spherical particles placed in contact with the concrete to be tested. The chain is part of a built-in transducer designed and assembled to excite and detect HNSWs. The method exploits the dynamic interaction between the particles and the concrete. The hypothesis is that the interaction depends on the stiffness of the concrete and influences the time of flight and amplitude of the solitary pulses reflected at the transducer/concrete interface, and traveling within the chain. The results show that the time of flight is monotonically dependent upon the modulus of elasticity of the concrete and that the transducers designed and assembled in this study are reliable and repeatable. In the future, the proposed NDE method may potentially serve as a cost-effective tool for the rapid evaluation of existing concrete structures.

Paper Details

Date Published: 19 April 2017
PDF: 8 pages
Proc. SPIE 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017, 101691C (19 April 2017); doi: 10.1117/12.2258556
Show Author Affiliations
Amir Nasrollahi, Univ. of Pittsburgh (United States)
Wen Deng, Univ. of Pittsburgh (United States)
Northwestern Polytechnical Univ. (China)
Piervincenzo Rizzo, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 10169:
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017
H. Felix Wu; Andrew L. Gyekenyesi; Peter J. Shull; Tzu-Yang Yu, Editor(s)

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