A5057642543- Fatigue and fracture mechanics
- Welding Techniques and Residual Stresses
- Advanced Welding Techniques Analysis
- Surface Treatment and Residual Stress
- Structural Load-Bearing Analysis
- Non-Destructive Testing Techniques
- Mechanical Behavior of Composites
- Fire effects on concrete materials
- Advanced machining processes and optimization
- Mechanical stress and fatigue analysis
- High-Velocity Impact and Material Behavior
- Ultrasonics and Acoustic Wave Propagation
- Material Properties and Failure Mechanisms
- Aluminum Alloys Composites Properties
- Metal Alloys Wear and Properties
- Engineering Structural Analysis Methods
- Mechanical and Thermal Properties Analysis
- Structural Health Monitoring Techniques
- Mechanical Failure Analysis and Simulation
- Metal Forming Simulation Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- Microstructure and Mechanical Properties of Steels
- Smart Materials for Construction
- High Temperature Alloys and Creep
- Additive Manufacturing Materials and Processes
KTH Royal Institute of Technology
2016-2025
University of Zanjan
2022
Chalmers University of Technology
2019
Khalifa University of Science and Technology
2014-2015
Luleå University of Technology
2009
Tekniska Högskolans Studentkår
2008
Abstract Aerospace welds are non-destructively evaluated (NDE) during manufacturing to identify defective parts that may pose structural risks, often using digital radiography. The analysis of these radiographs is time consuming and costly. Attempts automate the conventional computer vision methods or shallow machine learning have not, thus far, provided performance equivalent human inspectors due high reliability requirements low contrast noise ratio defects. Modern approaches based on deep...
Abstract This study investigates the implementation of mechanized high-frequency mechanical impact (HFMI) treatments to enhance fatigue life complex welded structures. Digital visual inspection and path planning are utilized through digital laser scanning system automate HFMI process for more weld shapes in S355 steel grade, such as circular seams, which challenging treat consistently. The setup was calibrated ensure precise alignment consistent application tool along toe line. Finite...
The current paper presents a comprehensive overview of weld quality control and assurance welded structures where the major failure prevention is due to fatigue loading. It gives drawbacks limitation systems, international standards, guidelines used in today’s production. Furthermore, recent development structures, new online method presented. main target enable complete, evaluation large quantities welds an accurate repeatable fashion. Information gathered will not only be for determining...
This study estimates the angular distortion and residual stresses due to welding using following methodologies: thermo-elastic-plastic, inherent strain (local-global), substructuring on two types of welded joints (T-type fillet weld butt weld). The numerical results are compared with experimental measurements these methodologies evaluated in terms accuracy computational time. In addition, influence sequence transverse has been studied numerically by implementing thermo-elastic-plastic...
This paper deals with a crack propagation analysis of welded structures and rehabilitation after pre-fatigue loading by the high-frequency mechanical impact (HFMI) post-treatment technique. The investigated specimen type is thin-walled longitudinal stiffener made mild steel S355. Fracture calculations are primarily performed on basis weight-function approach. Thereby, local residual stress condition at weld toe considered aid structural simulation, whereas numerically evaluated distribution...
The decreased fatigue capacity of welded components with increasing plate thickness, known as the size effect, is a well-known phenomenon in most design standards. effect links directly to probabilistic nature failure, where extent stress concentrations and gradients through thickness governs joint. Fatigue standards recommendations address by modifying S-N curve for joints thicker than reference value; however, increase strength due thinness commonly not considered. failure investigated...
<title>Abstract</title> The fatigue strength of welded joints is influenced by several parameters, among which the size effect, more specifically thinness and weld quality are investigated in current study. To this aim, a number test series were performed on transverse non-load-carrying attachments with 2 mm 8 plate thicknesses under uniaxial tensile constant amplitude loading. Local geometrical along angular misalignment between plates, measured aid laser scanning device. results...