Two-dimensional pitted corrosion localization on coated steel based on fiber Bragg grating sensors

Huang, Ying; Deng, Fengxia; Xu, Luyang; Azarmi, Fardad

doi:10.1007/s13349-020-00424-1

Cited by 9 publications

(7 citation statements)

References 47 publications

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“…Through the ages, pipeline integrity monitoring and investigation has been gaining arising attention in industry [1], since the pipeline network is expanding and carrying majority of energy product [2]. Although multiple techniques are posted to monitor the in-line environment [3] [4], the physical sensor [5] passively monitor the changing signal is still the mainstream of industrial application.…”

Section: Introduction and Methodologymentioning

confidence: 99%

Experimental study on the durability of an in-line sensor epoxy membrane under pipeline cleaning events

Shi,

Xu,

Huang

2024

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2024

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Pipeline pigging has become a standard practice in the petroleum and natural gas industry, utilizing fluid or gas pumping upstream to facilitate cleaning of wax, sediments, or dewatering. In previous research by the authors, a specialized epoxy membrane embedded with chemical sensors was developed to monitor in-line environments. However, the durability of this thin film material under pipeline cleaning conditions remained unexplored. This study conducted experimental tests simulating industrial pipeline cleaning procedures using rubber-based cleaning disks. Results indicate that a standard 3mm epoxy base attached to the pipeline's inner wall maintains integrity with minimal surface wear during pipeline cleaning activities. Additionally, the study found that the maximum shear stress applied to the membrane increases with thickness, reaching a maximum of 2.95 MPa when the membrane thickness is less than 3mm. These findings provide valuable insights into the resilience of epoxy-based membranes in harsh pipeline cleaning environments, informing future development and deployment of in-line monitoring technologies.

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Section: Introduction and Methodologymentioning

confidence: 99%

Experimental study on the durability of an in-line sensor epoxy membrane under pipeline cleaning events

Shi,

Xu,

Huang

2024

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2024

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“…In our previous study, 54 the area of the corrosion product above the steel surface can be assumed to be 1.2 times that of the pit, where A c ¼ 1:2A 0 . The experimental results yield good accuracy.…”

Section: Corrosion Severity Assessmentmentioning

confidence: 99%

Experimental study on combined effect of mechanical loads and corrosion using tube-packaged long-gauge fiber Bragg grating sensors

Shi

Yan

et al. 2023

Structural Health Monitoring

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This study presents an experimental investigation on the combined effect of mechanical loads and corrosion using the designed polytetrafluoroethylene tube-packaged fiber Bragg grating (FBG) sensors, as to implement long-gauge FBG (LFBG) sensors in corrosion detection practices for structural health monitoring. A simplified LFBG-based sensing model was proposed for strain measurement in terms of the Bragg wavelength change. Correspondingly, a systematic corrosion assessment strategy was developed to estimate corrosion severity and average corrosion rate. Upon this, the experimental study was performed on epoxy-coated steel specimens embedded with LFBG sensors, where the loading, corrosion, and combined loading–corrosion tests were used to explore the effect of mechanical loads on corrosion behavior. Test results revealed that the specimens subjected to combined conditions exhibited more severe corrosion damage. The maximum mass loss was observed to be 1.82 and 2.43 in percentage under individual corrosion and combined loading–corrosion conditions, respectively. Also, the pit depth under combined conditions was found to develop rapidly in the early stage. The pit depth severity ratio was around 0.2–0.8 during the 67 days of exposure, indicating an evident impact of loading on corrosion severity. Furthermore, the maximum average corrosion rate under combined conditions was found to be 5.66 times that under individual corrosion conditions.

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“…The shape of pitted corrosion is considered as the hemispherical hole, as shown in Figure 3 a. The depth of pitted corrosion (

) can be used to characterize the severity of corrosion [ 47 ]:

where

is the upward displacement of coating induced by pitted corrosion, and

is the volume ratio between the corrosion product and the original steel [ 47 ].…”

Section: Theoretic Analysismentioning

confidence: 99%

“…As the corrosion products lift a small area of epoxy, debonding of epoxy coating would occur along the width of the corrosion. Since all other areas other than the corrosion width remain bonded to the substrate [ 47 ], the debonded epoxy can be simplified as a fixed beam, which is subjected to both uplifting force induced by corrosion products (

) and downward external mechanical load (

) as shown in Figure 4 a. In other words, the FBG sensor measures the strains in the epoxy that is subjected to a combination of mechanical loads and corrosion effect.…”

Section: Theoretic Analysismentioning

confidence: 99%

Monitoring Epoxy Coated Steel under Combined Mechanical Loads and Corrosion Using Fiber Bragg Grating Sensors

Zhang

Huang

et al. 2022

Sensors

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Fiber Bragg grating (FBG) sensors have been applied to assess strains, stresses, loads, corrosion, and temperature for structural health monitoring (SHM) of steel infrastructure, such as buildings, bridges, and pipelines. Since a single FBG sensor measures a particular parameter at a local spot, it is challenging to detect different types of anomalies and interactions of anomalies. This paper presents an approach to assess interactive anomalies caused by mechanical loading and corrosion on epoxy coated steel substrates using FBG sensors in real time. Experiments were performed by comparing the monitored center wavelength changes in the conditions with loading only, corrosion only, and simultaneous loading and corrosion. The theoretical and experimental results indicated that there were significant interactive influences between loading and corrosion for steel substrates. Loading accelerated the progress of corrosion for the epoxy coated steel substrate, especially when delamination in the epoxy coating was noticed. Through the real-time monitoring from the FBG sensors, the interactions between the anomalies induced by the loading and corrosion can be quantitatively evaluated through the corrosion depth and the loading contact length. These fundamental understandings of the interactions of different anomalies on steel structures can provide valuable information to engineers for better management of steel structures.

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Two-dimensional pitted corrosion localization on coated steel based on fiber Bragg grating sensors

Cited by 9 publications

References 47 publications

Experimental study on the durability of an in-line sensor epoxy membrane under pipeline cleaning events

Experimental study on the durability of an in-line sensor epoxy membrane under pipeline cleaning events

Experimental study on combined effect of mechanical loads and corrosion using tube-packaged long-gauge fiber Bragg grating sensors

Monitoring Epoxy Coated Steel under Combined Mechanical Loads and Corrosion Using Fiber Bragg Grating Sensors

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