Paper Title:

Fatigue Failure Analysis Using the Theory of Critical Distance

Periodical Key Engineering Materials (Volumes 462 - 463)
Main Theme Fracture and Strength of Solids VII
Edited by Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages 663-667
DOI 10.4028/www.scientific.net/KEM.462-463.663
Citation Ruslizam Daud et al., 2011, Key Engineering Materials, 462-463, 663
Online since January 2011
Authors Ruslizam Daud, Ahmad Kamal Ariffin, Shahrum Abdullah, A. Emran Ismail
Keywords Fatigue Limit Prediction, Linear Elastic Fracture Mechanics (LEFM), Stress Concentration, Theory of Critical Distances
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This paper explores the initial potential of theory of critical distance (TCD) which offers essential fatigue failure prediction in engineering components. The intention is to find the most appropriate TCD approach for a case of multiple stress concentration features in future research. The TCD is based on critical distance from notch root and represents the extension of linear elastic fracture mechanics (LEFM) principles. The approach is allowing possibilities for fatigue limit prediction based on localized stress concentration, which are characterized by high stress gradients. Using the finite element analysis (FEA) results and some data from literature, TCD applications is illustrated by a case study on engineering components in different geometrical notch radius. Further applications of TCD to various kinds of engineering problems are discussed.

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