Work

Methodology for Stress Concentration Analysis in Corrosion Pits Using the Finite Element Method

Year: 2025

Type: article

Abstract: ABSTRACT This paper aims to propose a methodology for stress concentration analysis in corrosion pits measured by surface topography techniques, such as interferometry. A filter was proposed to smooth the measured profile of pits, remaining the same aspect ratio (a/2c). There was an increase in the stress concentration factor () for discretized pit models compared with ellipsoidal pit models. The increase was already expected, since there is a pronounced effect of secondary pits in the . The effect of the pit surface profile was more pronounced than a/2c in the . The maximum stress was at the maximum pit depth, or it was dislocated to secondary pits, depending on the pit geometry. The for measured pits is possibly even greater, considering the real pit profiles.

Source: Materials and Corrosion

DOI: 10.1002/maco.202414759

Authors: Lucas Gonçalves Pinheiro, Marcelo Favaro Borges, Luiz Francisco Rodrigues Venturini, João Júnior Lopês

Institution: Universidade Federal do Rio Grande do Sul

Language: English

Topic: Structural Integrity and Reliability Analysis

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,540

Funder: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior