title: Reference-free corrosion damage diagnosis in steel strands using guided ultrasonic waves.
abstract: This study presents a nondestructive evaluation method based on guided ultrasonic waves (GUW) to quantify corrosion damage of prestressing steel strands. Specifically, a reference-free algorithm is proposed to estimate the strand's cross-section loss by using dispersion curves, continuous wavelet transform, and wave velocity measurements. Accelerated corrosion tests are carried out to validate the proposed approach. Furthermore, the propagation of Heisenberg uncertainty to diameter measurement is also investigated. The method can reasonably estimate the wires' diameter without any baseline as a reference.
authors.affiliation: Smart Structures Research Laboratory, Department of Civil, Structural, and Environmental Engineering, University at Buffalo, Buffalo, NY 14228, United States. Electronic address: alirezaf@buffalo.edu.
authors.forename: Alireza
authors.initials: A
authors.lastname: Farhidzadeh
authors.affiliation: Smart Structures Research Laboratory, Department of Civil, Structural, and Environmental Engineering, University at Buffalo, Buffalo, NY 14228, United States. Electronic address: ssalamon@buffalo.edu.
authors.forename: Salvatore
authors.initials: S
authors.lastname: Salamone
keywords: Corrosion; Guided ultrasonic wave; Steel strand; Uncertainty analysis; Wavelet transform