Premium
Determination of SIF for patched crack in aluminum plates by the combined finite element and genetic algorithm approach
Author(s) -
ERGUN E.,
TASGETIREN S.,
TOPCU M.
Publication year - 2008
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2008.01282.x
Subject(s) - finite element method , stress intensity factor , displacement (psychology) , aluminium , materials science , structural engineering , extended finite element method , stress (linguistics) , mixed finite element method , mathematical analysis , mathematics , geometry , composite material , engineering , psychology , linguistics , philosophy , psychotherapist
In this paper, the finite element method is used to analyze the behaviour of repaired cracks in 2024‐T3 aluminum with bonded patches made of unidirectional composite plates. The problem is considered in Mode I condition. First the K I stress intensity factor (SIF) is calculated by the finite element method using displacement correlation technique. Different plate and patch thicknesses and crack lengths are considered in the analyses. Then an equation is determined by using genetic algorithms for the calculation of stress intensity factor without any further finite element analysis. The equation gives reasonably accurate results.