Fatigue life prediction of notched components under size effect using critical distance theory

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Ye, WL (Autor) Outra; Zhu, SP (Autor) Outra; Niu, XP (Autor) Outra; He, JC (Autor) Outra; Correia, JAFO (Autor) FEUP

Revista

Título: Theoretical and Applied Fracture Mechanics

Vol. 121

ISSN: 0167-8442

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00X-0XF

DOI: 10.1016/j.tafmec.2022.103519

Abstract (EN): Notch and size effects have shown significant influences on fatigue performance of engineering components, which deserve special attentions when performing structural health assessment. Thus, a possible size effect on critical distance is identified, when evaluating fatigue lives of notched specimens using the theory of critical distance.. In this work, by introducing the relative stress gradient concept, a novel reformulation of critical distance theory is proposed to consider the size effect in notch fatigue analysis. Experimental data of GH4169 Ni-based alloy, Al 2024-T351 alloy, and En3B low carbon steel notched specimens are applied for model validation and comparison. Results indicate that all predicted lives based on the proposed method agree well with the experimental values.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10