Predicting residual distortion of aluminum alloy stiffened sheet after friction stir welding by numerical simulation

Yan, Dongyang; Wu, Aiping; Silvanus, J.; Shi, Qingyu

doi:10.1016/j.matdes.2010.11.032

Cited by 70 publications

(31 citation statements)

References 18 publications

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“…The majority of those studies, due to weakness in the computational capabilities of the previous computers, were limited to two-dimensions on the plane perpendicular to the welding direction. Good agreements have been observed between the numerical predictions and experimental results [9,10] which encourage using FE welding simulation in residual stress evaluation.…”

Section: Introductionsupporting

confidence: 54%

Using finite element and ultrasonic method to evaluate welding longitudinal residual stress through the thickness in austenitic stainless steel plates

2013

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a b s t r a c tThis paper uses a 3D thermo-mechanical finite element analysis to evaluate welding residual stresses in austenitic stainless steel plates of AISI 304L. The finite element model has been verified by the hole drilling method. The validated finite element (FE) model is then compared with the ultrasonic stress measurement based on acoustoelasticity. This technique uses longitudinal critically refracted (L CR ) waves that travel parallel to the surface within an effective depth. The residual stresses through the thickness of plates are evaluated by four different series (1 MHz, 2 MHz, 4 MHz and 5 MHz) of transducers. By combining FE and L CR method (known as FEL CR method) a 3D distribution of residual stress for the entire of the welded plate is presented. To find the acoustoelastic constant of the heat affected zone (HAZ), a metallographic investigation is done to reproduce HAZ microstructure in a tensile test sample. It has been shown that the residual stresses through the thickness of stainless steel plates can be evaluated by FEL CR method.

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Section: Introductionsupporting

confidence: 54%

Using finite element and ultrasonic method to evaluate welding longitudinal residual stress through the thickness in austenitic stainless steel plates

2013

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“…The majority of those studies, due to weakness in the computational capabilities of the previous computers, were limited to twodimensions on the plane perpendicular to the welding direction. However, good agreements have been observed between the numerical predictions and experimental results which encourage using FE welding simulation in residual stress evaluation [8,9].…”

Section: Finite Element Welding Simulationmentioning

confidence: 68%

Nondestructive Evaluation of Welding Residual Stresses in Austenitic Stainless Steel Plates

Javadi

Akhlaghi

Najafabadi

2014

Research in Nondestructive Evaluation

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This article investigates the nondestructive capability of ultrasonic waves in residual stress evaluation of austenitic stainless steel plates (AISI 304L). Longitudinal critically refracted (L CR ) waves are employed to measure the residual stresses. Measuring the acoustoelastic constant through the tensile test is eliminated on the main investigated sample to keep it intact. Another welded plate with the same welding specification, geometry, thickness, and the same material is used to extract tensile test samples. To find the acoustoelastic constant of the heat affected zone (HAZ), a metallographic investigation is done to produce microstructure similar to that of the HAZ in a tensile test sample. A finite element model of welding process, which is validated by hole-drilling method, is used to verify the ultrasonic results. The results show good agreement between finite element and ultrasonic stress measurements which is accomplished nondestructively.

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“…However, in [28][29][30], for example, friction stir welding of aerospace aluminium alloys was investigated. In [26,[31][32][33][34][35][36], the resulting distortions and residual stresses after laser beam welding of aluminium T-joints were predicted.…”

Section: Step 1: Process Simulationmentioning

confidence: 99%

Retardation of fatigue crack growth in aircraft aluminium alloys via laser heating – Numerical prediction of fatigue crack growth

Schnubel

Huber

2012

Computational Materials Science

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The presented study discusses a quantitative numerical approach for predicting the fatigue crack growth in AA2198-T8 C(T)100 specimens containing one line of laser heating. By heating the with a defocused laser residual stresses are introduced and the fatigue crack growth is retarded. The developed methodology, which investigates coupling of the structural process simulation, the extraction of the total stress intensity K tot and the prediction of the resulting fatigue crack growth rates by an empirical crack growth law is stepwise validated on the basis of experimental results. The prediction is found to be highly accurate. Special attention needs to be given to the quality of the process simulation results because the prediction of fatigue crack growth is highly sensitive to the results obtained in this simulation step.

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Predicting residual distortion of aluminum alloy stiffened sheet after friction stir welding by numerical simulation

Cited by 70 publications

References 18 publications

Using finite element and ultrasonic method to evaluate welding longitudinal residual stress through the thickness in austenitic stainless steel plates

Using finite element and ultrasonic method to evaluate welding longitudinal residual stress through the thickness in austenitic stainless steel plates

Nondestructive Evaluation of Welding Residual Stresses in Austenitic Stainless Steel Plates

Retardation of fatigue crack growth in aircraft aluminium alloys via laser heating – Numerical prediction of fatigue crack growth

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