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

Journal of Infrastructure Preservation and Resilience

W. Spencer Guthrie¹  Jinying Zhu²  Chungwook Sim²  Sepehr Pashoutani²  Kwanghee Won³  Brian A. Mazzeo⁴ 

[1] Department of Civil and Environmental Engineering, Brigham Young University;Department of Civil and Environmental Engineering, University of Nebraska-Lincoln;Department of Electrical Engineering and Computer Science, South Dakota State University;Department of Electrical and Computer Engineering, Brigham Young University;

关键词: Nondestructive testing;    Data fusion;    Ground-penetrating radar;    Vertical electrical impedance;    Autoencoder;    Crack;   

DOI  :  10.1186/s43065-021-00032-3

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown