Stress Analysis in Damaged Pipeline with Composite Coating

This paper studied the distribution of stresses near damage in the form of axial surface cracks in a pipeline reinforced with a spiral-wound composite coating. The authors applied the homogenization method to determine the effective elastic characteristics of a structurally anisotropic layered packa...

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Bibliographic Details
Published in:Applied sciences 2021-11, Vol.11 (22), p.10676
Main Authors: Dutkiewicz, Maciej, Dalyak, Taras, Shatskyi, Ivan, Venhrynyuk, Tetyana, Velychkovych, Andrii
Format: Article
Language:English
Subjects:
Axial stress
Coating effects
Coatings
composite coating
crack
Crack tips
Cracks
Defects
Elastic anisotropy
Energy flow
Fiberglass
Finite element analysis
Finite element method
Hypotheses
Investigations
Metal fatigue
Numerical analysis
pipeline
Pipes
Protective coatings
Steel
Stress analysis
Stress concentration
stress intensity factor
Stress intensity factors
Stress state
Surface cracks
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Summary:This paper studied the distribution of stresses near damage in the form of axial surface cracks in a pipeline reinforced with a spiral-wound composite coating. The authors applied the homogenization method to determine the effective elastic characteristics of a structurally anisotropic layered package. By means of the classical momentless theory of shells, it was established that the stress state of the coated intact pipe under the pressure of the pumped product depends on the parameters of the geometry of the capacity strip, as well as on the component composition of the heterogeneous coating. The finite element method was applied to solve the problem of plane deformation of a piecewise homogeneous ring with an internal crack perpendicular to the interface. This problem assumes the linearity of the materials and the ideal mechanical contact with the layers. The effect of the composite coating and the size of the damage on the magnitudes of the energy flow into the crack tip, and on the stress intensity factor, was studied in detail. Various variants of the coating were considered, namely, winding of the coating on an unloaded pipe and reinforcement of the pipe under repair pressure.
ISSN:2076-3417
2076-3417
DOI:10.3390/app112210676