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Article
Open AccessPrediction of the fatigue curve of high-strength steel resistance spot welding joints by finite element analysis and machine learning
The process of resistance spot welding is extensively utilized in automotive assembly. Analyzing the fatigue strength of resistance spot welded (RSW) joints of thin plate high-strength steel holds significant ...
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Chapter and Conference Paper
Control of Car Decks Welding Deformation in RO-RO Ships
Lashing rails are used in RO-RO ships to lash cars to car decks during transportation. These rails are firmly fillet welded to decks to avoid damage by car tires during loading and unloading. These rails are ...
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Article
A dual-mesh method for efficient thermal stress analysis of large-scale welded structures
Transient thermo-mechanical analysis of welding problem requires tremendous computation cost. To accelerate the thermal analysis of large-scale welded structures, an efficient computation scheme based on heat ...
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Article
Deformation characteristics and microstructural evolution in friction stir welding of thick 5083 aluminum alloy
The microstructure development in the weld key-hole along the plate thickness was investigated through scanning electron microscope (SEM), electron backscatter diffraction (EBSD), and transmission electron mic...
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Chapter and Conference Paper
Friction Stir Welding of Thick Aluminium Welds—Challenges and Perspectives
The present paper describes the main challenges faced by the heavy metal industries in the adoption of the friction stir welding of thick section. The requirement of higher forge axis load necessitates the use...
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Article
Microstructural Characteristics and Mechanical Properties of Friction Stir Welded Thick 5083 Aluminum Alloy
Joining thick sections of aluminum alloys by friction stir welding (FSW) in a single pass needs to overcome many challenges before it comes to full-scale industrial use. Important parameters controlling the st...
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Article
Finite element analysis of deformation in early stage of multi-pass circumferential dissimilar welding of thick-walled pipes with narrow gap
Three-dimensional thermal elastic-plastic finite element analyses were conducted in order to reveal the mechanism of gap shrinkage in early stage of multi-pass narrow gap welding of thick-walled dissimilar pip...
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Chapter and Conference Paper
Artificial Neural Network Application for Parameter Prediction of Heat Induced Distortion
Heat induced distortion has been widely studied over the years, in order to provide reliable results, thermal elastic-plastic FEM analysis have been used to estimate the distortions produced by the heat source...
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Article
Iterative substructure method employing concept of inherent strain for large-scale welding problems
When structures such as ships, automobiles, and bridges are assembled by welding, distortion and residual stress are produced as unavoidable consequence of local shrinkage due to welding. The dimensional error...
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Article
FE Analysis of Buckling Behavior Caused by Welding in Thin Plates of High Tensile Strength Steel
The target of this study was to investigate buckling behavior during the entire welding process which consists of the heating and the cooling processes. For thin plate structures made of high tensile strength...
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Article
Martensite transformation of a Cr-Ni type weld metal and its application to analysis of welded joints
We have investigated the martensite transformation phenomena of a Cr-Ni type weld metal, especially the effects of stress and plastic strain that exist before the martensite transformation start. Tensile speci...
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Chapter
Compressive Residual Stress in Welded Joints with Low-Temperature-Transformation Weld Metal in High-Strength Steel
The use of low-temperature-transformation (LTT) weld metal is considerably effective in reducing residual stress in welded joints of high-strength steels. The reduction in residual stress is due to the dilatat...
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Article
A practical method for prediction of distortion produced on large thin plate structures during welding assembly
Fusion welding processes are widely used to assemble large thin plate structures such as ships, automobiles, and passenger trains because of their high productivity. However, welding-induced distortion often i...
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Article
Numerical analysis of deformation in multi-pass circumferential TIG welding with narrow gap
As one of the practical issues for narrow gap tungsten inert gas welding, the mechanism of gap width shrinkage in multi-pass circumferential butt welding of thick-walled pipes was examined experimentally and n...
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Article
Prediction of the residual welding stress in 2.25Cr-1Mo steel by taking into account the effect of the solid-state phase transformations
A computational approach based on the thermal elastic plastic finite element method was developed for predicting welding residual stress in low carbon alloyed steel welds by taking into account the effect of t...
