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Phased-array focusing with longitudinal guided waves in a viscoelastic coated hollow cylinder.
| Content Provider | CiteSeerX |
|---|---|
| Author | Luo, W. Rose, J. L. Velsor, J. K. Van Mu, J. |
| Abstract | ABSTRACT. Guided wave phased-array focusing techniques have been studied and applied in the long-range guided wave inspection of industrial pipelines. Advantages include longer inspection distance, greater wave penetration power and higher detection sensitivity. For reasons of protection, safety and thermal efficiency, a large percentage of pipes are coated and/or encased and buried underground. A phased-array focusing study for guided waves is now considered on pipelines with viscoelastic coatings. In this paper, longitudinal guided wave focusing as well as axisymmetric wave propagation is studied in a bare pipe and a pipe with a viscoelastic coating. A finite element model is studied. First, an investigation on whether the coating has an affect on the axisymmetric guided wave propagation is reported. Based on the result of a single channel, phased array focusing with 8-channel segments is studied. This study provides a very useful tool and guidance for the analysis and examination of guided wave focusing in a real field pipeline under various coating and environmental conditions. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Viscoelastic Coating Environmental Condition Large Percentage Wave Propagation Single Channel Wave Inspection Penetration Power Various Coating Inspection Distance Finite Element Model Wave Focusing Industrial Pipeline 8-channel Segment Detection Sensitivity Bare Pipe Guided Wave Focusing Real Field Pipeline Useful Tool Thermal Efficiency Phased-array Focusing Study Axisymmetric Wave Propagation Guided Wave |
| Content Type | Text |
| Resource Type | Article |