PPP-BOTDA Strain Measurements in Thin Concrete Panels under Truck Loads

Abstract

In this paper, the strain distribution and potential crack development within concrete panels for unbonded pavement overlays were investigated under truck load tests. Six full-size (183 cm x 183 cm x 7.5 cm) concrete panels instrumented with two distributed fiber optic sensors were prepared and tested to failure in the laboratory. An installation method applicable for field practice was implemented with the consideration of the fiber sensor's fragility. The distributed sensors' strain sensitivity coefficients were calibrated using a low capacity load frame. Different sensors' performance and ability to measure the strain distribution and detect cracks were compared. In the experiment, strain distributions measured from different distributed sensors were in good agreement, and can be applied to successfully locate cracks in the concrete panels.

Meeting Name

7th International Conference on Structural Health Monitoring of Intelligent Infrastructure (2015: Jul. 1-3, Torino, Italy)

Department(s)

Civil, Architectural and Environmental Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 International Society for Structural Health Monitoring of Intelligent Infrastructure (ISHMII), All rights reserved.

Publication Date

01 Jul 2015

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