The relation between fatigue crack growth rate and plastic energy dissipation in 7075-T6

Quan, Haoyuan; Alderliesten, R.C.

doi:10.1016/j.engfracmech.2021.107765

Cited by 9 publications

(3 citation statements)

References 42 publications

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“…The relationship between the FCP rate and ΔK of the two Al alloys at different aging states is shown in Figure 3a,b. It should be noted that the range of data collection for da=dN and ΔK is consistent with the results of the previous studies, [44,45] as shown in Figure 3c,d. From Figure 3a, it can be seen that the FCP curves of 7075 Al alloy at the three aging states almost coincide.…”

Section: Fatigue Crack Propagation Behaviorsupporting

confidence: 91%

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Comparison on the Fatigue Crack Propagation of High‐Strength Aluminum Alloys

Gong,

Zhang,

Duan

et al. 2023

Adv Eng Mater

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To investigate the fatigue crack propagation (FCP) behaviors of high‐strength 7075 and 2024 Al alloys, FCP experiments were conducted for the two alloys at different aging states (underaged (UA), peak‐aging (PA) and overaged (OA)). It is found that strength and plasticity are the main factors influencing the FCP. For 7075 Al alloy, the FCP curves almost coincide for the three aging states that have similar tensile properties. However, 2024 Al alloy shows the lowest FCP rate at the UA state which has the strongest strength‐plasticity match among the three aging stages. Based on the low‐cycle fatigue damage model, the effect of strength‐plasticity balance on FCP rate of the two Al alloys at different aging states was quantitatively analyzed. It is found that the larger the strength‐plasticity balance of the alloy is, the smaller the FCP rate under the same stress intensity factor. This study indicates that the FCP rate of high‐strength Al alloys is mainly influenced by the strength‐plasticity balance due to the difference in the aging states.This article is protected by copyright. All rights reserved.

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Section: Fatigue Crack Propagation Behaviorsupporting

confidence: 91%

“…FCP curves of 7075 and 2024 Al alloys at different aging states. a) 7075; b) 2024; c,d) experimental results from refs.,[44,45] respectively.…”

mentioning

confidence: 99%

Comparison on the Fatigue Crack Propagation of High‐Strength Aluminum Alloys

Gong,

Zhang,

Duan

et al. 2023

Adv Eng Mater

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“…32 It is one of the most comprehensive FCG models and is applicable for the whole FCG regime (regions I-III). [33][34][35] It works under the assumption that the crack will propagate till it reaches the fracture toughness of the material.…”

Section: Fatigue Crack Growth (Fcg) Modelsmentioning

confidence: 99%

A study on XFEM simulation of tensile, fracture toughness, and fatigue crack growth behavior of Al 2024 alloy through fatigue crack growth rate models using genetic algorithm

Gairola

Jayaganthan

Verma

2023

Fatigue Fract Eng Mat Struct

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This study aims to numerically validate and simulate the fatigue crack growth rate (FCGR), tensile, and fracture toughness properties of T3 and T351 tempered aerospace grade Al 2024 alloy. The extended finite element method (XFEM) coupled with a genetic algorithm (GA) was used to predict FCGR behavior in the framework of an in‐house developed MATLAB code. The numerical simulation was performed using three different FCGR models, i.e., Paris, Forman, and Nasgro. The FCGR prediction ability of simulation models was improved and compared further using GA. The Nasgro model with genetically optimized parameters shows the highest FCGR prediction accuracy compared to other FCGR models. The critical stress intensity factor and von Mises stress distribution under static loading were also predicted for C(T) specimen. A similar XFEM approach was used for analyzing the tensile behavior using a center cracked specimen at the gage section of a dog bone‐shaped specimen.

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Enhanced fatigue crack propagation resistance of Al–4.1Cu–1.1Li alloy by interrupted aging

Xia

Huang

et al. 2022

J Mater Sci

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The relation between fatigue crack growth rate and plastic energy dissipation in 7075-T6

Cited by 9 publications

References 42 publications

Comparison on the Fatigue Crack Propagation of High‐Strength Aluminum Alloys

Comparison on the Fatigue Crack Propagation of High‐Strength Aluminum Alloys

A study on XFEM simulation of tensile, fracture toughness, and fatigue crack growth behavior of Al 2024 alloy through fatigue crack growth rate models using genetic algorithm

Enhanced fatigue crack propagation resistance of Al–4.1Cu–1.1Li alloy by interrupted aging

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