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Probabilistic assessment for cracked structures analysis

Akramin,M.R.M., and Abdulnaser M. Alshoaibi, and Hadi M.S.A., and Ariffin A.K., and Mohamed N.A.N., (2008) Probabilistic assessment for cracked structures analysis. International Journal of Mechanical and Materials Engineering, 3 (1). pp. 1-16. ISSN 1823-0334

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Official URL: http://ejum.fsktm.um.edu.my/ArticleInformation.aspx?ArticleID=692

Affiliations

Universiti Kebangsaan Malaysia, Faculty of Engineering, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering, Dept. of Mechanical and Materials Engineering

Abstract

This paper presents a probabilistic methodology for linear fracture mechanics analysis of cracked structures. The main focus is on probabilistic aspect which related the nature of crack in material. The methodology involves finite element analysis; statistical models for uncertainty in material properties, crack size, fracture toughness and loads; and standard reliability methods for evaluating probabilistic characteristics of linear elastic fracture parameter. The uncertainty in the crack size can have a significant affect on the probability of failure, particularly when the crack size has a large coefficient of variation. The double edged notched tension (DENT) specimen was simulated using developed codes and the results are compared with others. The comparison shows that probabilistic methodology based on Monte Carlo simulation provides accurate estimates of failure probability for use in linear elastic fracture mechanics.

Item Type:Journal
Keywords:Crack size; Fracture toughness; Elastic fracture
Subjects:T Technology, Engineering
ID Code:10373

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