Title

ANALYSIS OF COMPOSITE SLEEVE REINFORCEMENT SYSTEMS FOR METALLIC PIPELINES UNDERGOING ELASTIC OR INELASTIC DEFORMATIONS

ANALYSIS OF COMPOSITE SLEEVE REINFORCEMENT SYSTEMS FOR METALLIC PIPELINES UNDERGOING ELASTIC OR INELASTIC DEFORMATIONS

Authorship

MATTOS, HERALDO SILVA DA COSTA; CORTES, RODRIGO MENDES ALVES; SILVA, CHRISTIAN JIANELLI

MATTOS, HERALDO SILVA DA COSTA

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CORTES, RODRIGO MENDES ALVES

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SILVA, CHRISTIAN JIANELLI

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DOI

10.5151/2594-5327-2727

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Abstract

The present work is concerned with the analysis of composite sleeve reinforcement systems for metallic pipelines undergoing elastic or inelastic deformations. In these systems, a piping or vessel segment is reinforced by wrapping it with concentric coils of composite material. The main goal is to develop a methodology as simple as possible to define the necessary thickness of composite material to assure: (a) the safety of repairs under operation conditions and/or (b) the lifetime extension under operation conditions. Such methodology, although simple, is able to account for different failure mechanisms (plasticity, fatigue, fracture). A computer program, has been developed to automatically evaluate the minimum thickness of reinforcement to be used for different imperfections or damage that impair the serviceability of a segment of steel transmission line. It is suggested the use of the composite sleeve as repair system itself (mainly to avoid or to restrain the propagation of internal flaws) but also as a complementary procedure to enhance the reliability of weldments, eliminating the necessity of heat treatment. Examples concerning the use of composite reinforcement in different damage situations are presented and analyzed showing the possibilities of practical use of the proposed methodology in the design of safer and more reliable repair systems

The present work is concerned with the analysis of composite sleeve reinforcement systems for metallic pipelines undergoing elastic or inelastic deformations. In these systems, a piping or vessel segment is reinforced by wrapping it with concentric coils of composite material. The main goal is to develop a methodology as simple as possible to define the necessary thickness of composite material to assure: (a) the safety of repairs under operation conditions and/or (b) the lifetime extension under operation conditions. Such methodology, although simple, is able to account for different failure mechanisms (plasticity, fatigue, fracture). A computer program, has been developed to automatically evaluate the minimum thickness of reinforcement to be used for different imperfections or damage that impair the serviceability of a segment of steel transmission line. It is suggested the use of the composite sleeve as repair system itself (mainly to avoid or to restrain the propagation of internal flaws) but also as a complementary procedure to enhance the reliability of weldments, eliminating the necessity of heat treatment. Examples concerning the use of composite reinforcement in different damage situations are presented and analyzed showing the possibilities of practical use of the proposed methodology in the design of safer and more reliable repair systems

Keywords

composite sleeve reinforcement systems, metallic pipelines, elasto-plasticity

composite sleeve reinforcement systems, metallic pipelines, elasto-plasticity