Estimation of Stresses in Concrete by Using Coda Wave Interferometry to Establish an Acoustoelastic Modulus Database

This article presents an experimental study of estimating stresses in concrete by applications of coda wave interferometry to establish an acoustoelastic modulus database. Under well-controlled laboratory conditions, uniaxial load cycles were performed on three groups of 15 × 15 × 35-cm concrete pri...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2020-07, Vol.20 (14), p.4031
Main Authors: Zhan, Hanyu, Jiang, Hanwan, Zhuang, Chenxu, Zhang, Jinquan, Jiang, Ruinian
Format: Article
Language:English
Subjects:
acoustoelastic modulus
Acoustoelasticity
coda wave interferometry
Concrete
Data processing
Design specifications
Humidity
Interferometry
Kaiser effect
Laboratories
Nondestructive testing
Prisms
Strain gauges
Stress analysis
stress recovery in concrete
Theory
Ultrasonic transducers
Velocity
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Summary:This article presents an experimental study of estimating stresses in concrete by applications of coda wave interferometry to establish an acoustoelastic modulus database. Under well-controlled laboratory conditions, uniaxial load cycles were performed on three groups of 15 × 15 × 35-cm concrete prisms, with ultrasonic signals being collected continuously. Then, the coda wave interferometry technique, together with acoustoelastic and Kaiser theories, are utilized to analyze the stress-velocity relations for the distinct ranges before and after historical maximum loads, forming an acoustoelastic modulus database. When applied to different concrete samples, their stresses are estimated with a high degree of accuracy. This study could be used to promote the development of novel nondestructive techniques that aid in structural stress monitoring.
ISSN:1424-8220
1424-8220
DOI:10.3390/s20144031