Research of Optimization Inverse Analysis Technique on CorrosionIdentification of Buried Pipeline Wall

摘要

The corrosion identification of buried oil and gas pipeline wall is studied by the way of observing strain value of pipeline ektexine under work pressure. The least square method is applied for establishing geometric parameter identification model of pipeline wall. Based on wall radius and eccentricity which are defined as design variables, the optimization of finite element method is also applied for inverse analysis. The size and location of corrosive area can be identified by strain change of pipeline ektexine. It is verified that this method is effective, precise and valuable by numerical simulation.