Fitness for Service Assessment on Local Metal Loss Near a Discontinuity Using Elastic Plastic Stress Analysis

Abstract

In fitness for service (FFS) assessments, one issue that people often encounter is a corroded area near a structural discontinuity. In this case, the formulabased sections of the FFS standard are incapable of evaluating the component without resorting to finite element analysis (FEA). In this paper, an FEAbased technical approach for evaluating FFS assessments using an elasticplastic material model and reformed criteria is proposed.