Multi-sensor data collection and fusion using autoencoders in condition evaluation of concrete bridge decks

Authors

Sepehr Pashoutani, University of Nebraska - Lincoln
Jinying Zhu, University of Nebraska - LincolnFollow
Chungwook Sim, University of Nebraska - LincolnFollow
Kwanghee Won, South Dakota State University
Brian A. Mazzeo, Brigham Young University
W Spencer Guthrie, Brigham Young University

ORCID IDs

Jinying Zhu

Date of this Version

6-22-2021

Citation

Pashoutani et al. Journal of Infrastructure Preservation and Resilience (2021) 2:18 https://doi.org/10.1186/s43065-021-00032-3

Comments

OPEN ACCESS

Abstract

This paper presents a multi-sensor data collection and data fusion procedure for nondestructive evaluation/testing (NDE/NDT) of a concrete bridge deck. Three NDE technologies, vertical electrical impedance (VEI), ground-penetrating radar (GPR), and high-definition imaging (HDI) for surface crack detection, were deployed on the bridge deck. A neural network autoencoder was trained to quantify the relationship between VEI and GPR results using the data collected at common positions. This relationship was then used for fusion of VEI and GPR data to increase the reliability and spatial resolution of the NDE measurements and to generate a data-fused condition map that showed novel characteristics. Threshold values for VEI and GPR tests were obtained and used to determine the color scale in the fused map. Surface cracks identified from HDI show reasonable agreement with the deterioration areas on the data-fused condition map. Chloride concentration measurements on sound and deteriorated areas of the deck were consistent with the NDE results.