A5003197687- Advanced Welding Techniques Analysis
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Aluminum Alloy Microstructure Properties
- Titanium Alloys Microstructure and Properties
- Nuclear Materials and Properties
- Welding Techniques and Residual Stresses
- Electromagnetic Launch and Propulsion Technology
- Offshore Engineering and Technologies
- Aluminum Alloys Composites Properties
- Fatigue and fracture mechanics
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- MXene and MAX Phase Materials
University of Cambridge
2016-2022
Granta Design (United Kingdom)
2018-2019
Bridge University
2014
This paper presents a finite element thermal model for similar and dissimilar alloy friction stir spot welding (FSSW). The is calibrated validated using instrumented lap joints in Al-Al Al-Fe automotive sheet alloys. successfully predicts the histories range of process conditions. resulting temperature are used to predict growth intermetallic phases at interface welds. Temperature predictions were study evolution hardness precipitation-hardened aluminum during post-weld aging after FSSW.
A finite element model was developed to predict the spatial and temporal variation of heat generation temperature in FSSW aluminium magnesium alloys. Heating by friction bulk plasticity is computed at intervals using small-strain elastic-plastic analysis for a small fraction one tool rotation. This runs parallel with conventional thermal running whole weld cycle. The tested two rotation speeds experimental data three wrought alloys, casting alloys (one magnesium). Heat history found be...
This paper presents a finite element thermal model for linear friction welding applied to an instrumented weld in Ti6Al4V. The power at the interface was estimated from measured transverse velocity and cyclic machine load. compared with history reverse-engineered thermocouple data. A simple analytical captured lateral distribution of heat input interface, while geometry changes loss due expulsion flash were included using sequential step-wise technique, removing elements one layer time...
Heat generation in linear friction welding of Ti alloy was modelled with a computationally efficient finite element analysis. This achieved by using multiple small strain analyses during one quarter cycle workpiece oscillation, giving snapshot the average heat dissipation rate single complete cycle. mechanical model for then repeated at intervals throughout equilibrium phase welding. A separate continuous thermal process (Jedrasiak et al., 2018), provided spatial temperature field as an...
Abstract This paper presents experimental results and finite element analysis of hot upsetting titanium alloys Ti64 Ti407 using a dilatometer in loading mode. All samples showed barrelling, as consequence an inhomogeneous temperature distribution friction. The FE is full thermomechanical model the test calibrated multiple thermocouples. At each nominal strain rate, true flow stress–strain response inferred difference between initially assumed constitutive input to analysis, $$\sigma...
<ns4:p><ns4:bold>Background:</ns4:bold> Formed aluminium alloy sheet materials are increasingly adopted in production processes such as vehicle manufacturing, due to the potential for weight-saving and improved recyclability when compared more traditional steel alloys. To maximise these benefits whilst maintaining sufficient mechanical properties, link between formability microstructure must be better understood. Virtual testing is a cost-effective strategy generating microstructure-informed...