Fatigue crack characterisation in 2024-T351 aluminium alloy through SEM observation combined with the CJP model

被引：8
|
作者：
Robles, J. M. [1 ]
Vasco-Olmo, J. M. [2 ]
Cruces, A. S. [1 ]
Diaz, F. A. [2 ]
James, M. N. [3 ,4 ]
Lopez-Crespo, P. [1 ]
机构：
[1] Univ Malaga, Dept Civil & Mat Engn, C Dr Ortiz Ramos,s n, Malaga 29071, Spain
[2] Univ Jaen, Dept Ingn Mecan & Min, Esuela Politecn Super Jaen, Jaen, Spain
[3] Univ Plymouth, Sch Engn Comp & Math, Plymouth, England
[4] Nelson Mandela Univ, Dept Mech Engn, Port Elizabeth, South Africa
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 166卷
关键词：
Fatigue crack growth; CJP model; Digital Image Correlation; Scanning Electron Microscopy; NUMERICAL-ANALYSIS; CLOSURE; GROWTH; STRESS; BEHAVIOR; PROPAGATION; PLASTICITY; STRENGTH; ZONE;
D O I：
10.1016/j.ijfatigue.2022.107279
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This work characterises crack growth in AA2024-T315 by combining different methods to further increase the reliability of the results. The Christopher-James-Patterson (CJP) model was fitted to experimental data obtained by digital image correlation (DIC). The effective value of the CJP stress intensity factors were successfully correlated with the Delta K-da/dN curve as obtained with Scanning Electron Microscopy measurements of the depth of striations on the fracture surface. This approach based on fitting the CJP model with DIC data and SEM ob-servations allowed estimation of opening and closure loads and allowed the propagation rate and fracture mode to be effectively characterised.
引用
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页数：10
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