@Article{sdhm.2019.05139,
AUTHOR = {Hui Wang, Songyou Li, Lei Liang, Gang Xu, Bin Tu},
TITLE = {Fiber Grating-Based Strain Sensor Array for Health Monitoring of Pipelines},
JOURNAL = {Structural Durability \& Health Monitoring},
VOLUME = {13},
YEAR = {2019},
NUMBER = {4},
PAGES = {347--359},
URL = {http://www.techscience.com/sdhm/v13n4/38229},
ISSN = {1930-2991},
ABSTRACT = {Pipelines are one of the most important modern energy transportation
methods, used especially for the transportation of certain dangerous energy media
materials such as crude oil, natural gas, and chemical raw materials. New requirements
have been put forward for the health monitoring and early security warning
of pipelines because of the large-scale and complicated development trend of the
pipe network system. To achieve an accurate assessment of the health conditions
of pipeline infrastructure, obtaining as many precise operating parameters as possible,
particularly at some critical parts of the pipeline, is necessary. Therefore, a
novel type of fiber grating strain sensor array is proposed herein to monitor the
pipeline hoop strain. The sensor utilizes fiber grating characteristics such as light
weight, corrosion resistance, remote transmission, and strong environmental
adaptability. The fiber containing the grating measurement points is implanted
into the composite material to complete the sensitization encapsulation and protection
of the bare fiber grating. The design of the sensor array fulfills the requirements
for monitoring pipeline mass data, making it easy to form a pipeline health
monitoring sensor network. The sensor sensitivity is researched by using a combination
of theoretical and experimental analysis. A sensitivity test, as well as linearity
and stability tests, are performed on the sensor. The experimental results
show that the average sensitivity of the sensor is 14.86 pm/με, and the error from
the theoretical calculation analysis value is 8.75%. Due to its high reliability, good
linear response and long-term stability, and the ability to reflect the exact strain
change of the outer wall of the pipeline, the designed sensor can support longterm
online pipeline monitoring. The fiber grating sensor array network has successfully
realized the monitoring of the pipeline’s internal operation by using
external strain changes. In addition to the performance benefits, there are other
merits associated with the applicability of the sensor namely simple structure,
compact size, manufacturing ease, and exterior installation ease.},
DOI = {10.32604/sdhm.2019.05139}
}