Dataset for: Fiber optic sensing of concrete cracking and rebar deformation using several types of cable

Distributed fiber optic sensing (DFOS) is increasingly being applied in
civil engineering. One recently emerging type of DFOS, Optical Frequency
Domain Reflectometry (OFDR), offers improved accuracy and resolution. This
repository contains the data set and post processing for an
experimental study conducted at University of California,
Berkeley that investigates the ability of OFDR, implemented using
several types of fiber optic cable, to detect concrete cracking and large
strain steel deformation. More specifically, the experimental
investigation involved six reinforced concrete specimens with different
types of optical fiber embedded in both the concrete and rebar. OFDR
successfully detected continuous rebar deformation and bond stress through
the post yielding range, as well as strain localization indicative of
concrete cracking. The type of optical fiber is shown to have a
substantial influence on the measured strain response after the onset of
nonlinear behavior (i.e. cracking, yielding) and into the large
deformation regime where measurement survivability becomes an issue. The
higher performing fibers reveal unprecedented detail regarding the
interaction between concrete and rebar and demonstrate potential for
application in RC structures. Please check our paper in Structural Control
and Health Monitoring (https://doi.org/10.1002/stc.2664) for more detailed
analysis.