PPP-BOTDA strain measurements in thin concrete panels under truck loads

Yi Bao, John A. Cain, Yizheng Chen, Genda Chen, Ying Huang

Research output: Contribution to conferencePaperpeer-review

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.

Original languageEnglish
StatePublished - 2015
Event7th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2015 - Torino, Italy
Duration: 1 Jul 20153 Jul 2015

Conference

Conference7th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2015
Country/TerritoryItaly
CityTorino
Period1/07/153/07/15

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