Identification and Sizing of Defects in Pipelines by the Wave Finite Element Method Using Torsional Guided Waves

Abstract eng:
Structural health monitoring of pipelines by guided waves is a technique under continuous development. It proved a relevant efficiency in defects detection in pipes. The analysis of reflections from cracks provides guidance to defects sizing. A guided wave technique capable of screening long lengths of pipes has been developed in our laboratory. The wave finite element method, adapted for the case of hollow cylinders as waveguide, was used to calculate reflection coefficients from different rectangular notches sizes and some singularities located in industrial pipeline. The numerical simulations were established while varying the excitation frequency. The aim of this work is to create a database for the identification and approximation of defects sizes detected in an industrial installation subject of experimental tests. The results were compared to usual finite element simulations in order to validate the technique. Good agreement was found between the results. Thus, the database can be used to size approximately the founded defects.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket