Abstract:
Distributed fiber optic cable is in increasing demand in civil engineering,
especially in the field of structural condition monitoring. The characteristics of fiber optic
cable have attracted the interest of engineers and researchers in recent years. This paper
describes an operational test of a distributed fiber optic cable to determine its effectiveness
in detecting cracks in concrete. A distributed fiber optic cable with internal fixed points
was installed in the foundation slab of a high-rise building parking lot. Strain
measurements from the fiber optic sensing cable were acquired and recorded using a
Brillouin time domain optical analyzer throughout the test. The main purpose of the precommissioning tests is to check the accuracy error of the measurements. The accuracy
error at any point on the cable is defined as the standard deviation of the repeated
measurement values. This will show the reliability of the measured strain when
interpreting the results.
