Abstract
Pipelines conveying fluids are considered strategic infrastructures to be protected and maintained. They generally serve for transportation of important fluids such as drinkable water, waste water, oil, gas, chemicals, etc. Monitoring and continuous testing, especially on-line, are necessary to assess the condition of pipelines. The paper presents findings related to a comparison between two spectral response algorithms based on the decimated signal diagonalization (DSD) and decimated Padé approximant (DPA) techniques that allow to one to process signals delivered by pressure sensors mounted on an experimental pipeline.
Highlights
Nondestructive methods are useful for structural health monitoring (SHM) which is an important field of research and development
Leak detection in pipelines is an example of piezoelectric application for SHM, and whatever signal processing technique we can adopt, as the impact of the pressure sensing device efficiency is definitely connected to the performance of the piezoelectric sensor
In the effort to show the importance of improving the quality of information recovered from a pressure sensor mounted on a pipeline for SHM, the paper has presented a comparison between two innovative algorithms based on the decimated Padé approximant (DPA) and decimated signal diagonalization (DSD) techniques
Summary
Nondestructive methods are useful for structural health monitoring (SHM) which is an important field of research and development. A leak in a pipeline, as illustrated, causes partial reflections that become become small small pressure pressure discontinuities discontinuities in in the the original original pressure pressuretrace trace reflections of of wave wave fronts fronts that and increase the damping of the overall pressure signal. There are different reasons that may cause leaks: (i) quality of the materials used for the pipeline: e.g., polyurethane/polyethylene, metal, stoneware, synthetic; (ii) junctions, and valves. According to a broad classification, there are various methods for retrieving leakage inThey components to be used for monitoring water flow within the pipeline They can be fixed on the pipelines, as illustrated in Hardware-based methods are related to dedicated be fixed theare pipe or they are Onhand, the other hand, software-based methods on data pipe or on they portable. Used to extract dynamic responses of complex mechanical and electrical systems
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