Welded Structures Lab’s Research Activities
Welded Structures Laboratory
Design and Manufacture of Multi-Materials Lightweight Structures
- Research activities
- Math-based design-for-manufacturing methodologies
- Dissimilar materials joining techniques and joint property modeling
- Computational process modeling procedures
- Optimum joint/connection design and modeling techniques
- Quantitative defect acceptance criteria
- Fatigue and fracture control methods
- Representative funded projects
- A direct polymer to aluminum joining technique
- A joint design and analysis technique for dissimilar material joints for optimum load-carrying capacity in static and fatigue loading
- Modeling of distortion effects on fatigue behaviors of lightweight structures
- A CAE durability method for laser-welded aluminum-coper battery interconnects
- Manufacturability evaluation of a titanium T-Craft full-scale mid-ship section
Additive Manufacturing (AM)
- Research activities
- Computational process modeling of metallic component AM
- Rapid solid-state deposition processes
- Optimum sequencing for residual stress and distortion mitigation
- Quantitative defect assessment method and acceptance criteria
- Fatigue and fracture property characterization
- Representative funded projects
- Quantitative quality acceptance criteria for randomly distributed defects in metallic AM parts
- A Soft-Touch (SoftTouch) Solid-State Deposition additive manufacturing technique
Advanced Design and Analysis Methods for Welded Structures
- Research activities
- Advanced welding and joining process simulation methods
- Mesh-insensitive structural stress method for structural fatigue modeling
- Master S-N curve and Master E-N curve approaches
- Low cycle fatigue and thermal ratcheting
- Multiaxial fatigue and treatment of random vibration fatigue
- Residual stress and distortion modeling methods and mitigation techniques
- Fracture mechanics treatment of residual stresses
- Quantitative weld sizing method and weld quality acceptance criteria
- Advanced Fitness-for-Service (FFS)/Engineering-Criticality Assessment (ECA) method
- Structural health monitoring, repair/maintenance, and remaining life evaluation methodologies
- Representative funded projects
- Coupled shear localization modeling of friction stir weld formation process
- A robust coarse mesh structural stress modeling procedure for spot-welded structures
- Development of mooring component assessment (MCA) ECA procedures
- Stress intensity factor solutions for small defects in round-bar components subjected to arbitrary loading conditions
- Enhanced mesh-insensitive structural stress fatigue evaluation procedure for updating API 579-RP-1/ASME FFS-1 Codes
- A semi-analytical residual stress profile estimation procedure for fitness for service in pressure vessels and piping components
- A Multi-Excitation and Multi-Axial fatigue evaluation procedure for rail vehicle structures
- Data-driven modeling of multiaxial fatigue in the frequency domain
