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Experimental Investigation of E/M Impedance Health Monitoring for Spot-Welded Structural Joints
Health monitoring results obtained during fatigue testing of a spot-welded lap-shear structural-joint specimen using the electromechanical (E/M) impedance technique are presented. The test specimensExpand
Visualization of the material flow in AA2195 friction-stir welds using a marker insert technique
The material flow in solid-state, friction-stir, butt-welded AA2195-T8 was investigated using a marker insert technique (MIT). Markers made of AA5454-H32 were embedded in the path of the rotatingExpand
Scanning Electron Microscopy for Quantitative Small and Large Deformation Measurements Part I: SEM Imaging at Magnifications from 200 to 10,000
A series of baseline displacement measurements have been obtained using 2D Digital Image Correlation (2D-DIC) and images from Scanning Electron Microscopes (SEM). Direct correlation of subsets from aExpand
Residual Stress and Microstructure Effects on Fatigue Crack Growth in AA2050 Friction Stir Welds
Abstract In this work, results of a study conducted on fatigue crack propagation in friction stir welded AA2050 and the effects of FSW induced residual stresses, as well as changes in theExpand
Two-dimensional friction stir welding process model based on fluid mechanics
AbstractA two-dimensional friction stir welding (FSW) process model has been developed. The fully coupled model is based on fluid mechanics and handles the solid state material transport duringExpand
Prediction of temperature distribution and thermal history during friction stir welding: input torque based model
AbstractA novel three-dimensional thermal model is proposed to study the transient temperature distributions during the friction stir welding of aluminium alloys. The moving heat source engendered byExpand
Visualisation of material flow in autogenous friction stir welds
Abstract Material flow in friction stir welds has been visualised using embedded marker materials. The fidelity of the visualisation technique has also been demonstrated. Results from the flowExpand
Fatigue Crack Growth in 2024-T351 Friction Stir Welded Joints: Longitudinal Residual Stress and Microstructural Effects
Abstract The role of longitudinal residual stress on propagation of fatigue cracks was examined in friction stir welds produced in 2024-T351 aluminum alloy. Fatigue crack growth rate was obtainedExpand
Flow visualization and simulation in FSW
Abstract The flow of material around the welding tool during friction stir welding (FSW) is closely linked to many of the key issues related to the process. Understanding of the flow is critical toExpand
Factors affecting the properties of friction stir welded aluminum lap joints
Friction stir welding (FSW) is a solid-state joining process invented at The Welding Institute (TWI) in 1991. The ability to produce high-quality welds in high-strength aluminum alloys sets FSW apartExpand