About the project
This project investigates the fracture behaviour and structural integrity of composite cryogenic vessels for liquid hydrogen storage in aerospace applications. Combining low-temperature experimental testing with multiscale numerical modelling, the project aims to develop predictive tools for damage evolution and residual strength, supporting the design of lightweight, safe, and efficient zero-emission aircraft structures.
The project focuses on the structural performance and fracture behaviour of advanced composite vessels designed for the storage of liquid hydrogen (LH₂) in aerospace applications. The transition toward zero-emission aviation requires lightweight and safe cryogenic storage systems capable of withstanding extreme thermal and mechanical loads. However, composites operating at cryogenic temperatures experience matrix embrittlement, interfacial degradation, and complex thermo-mechanical stresses that can significantly affect their reliability. This research will combine experimental and computational approaches to investigate these challenges. You'll perform low-temperature mechanical testing, such as tensile, fracture toughness, and interlaminar shear strength tests, using specialised cryogenic equipment.
Double Cantilever Beam (DCB) and End Notch Flexure (ENF) methods will be employed to evaluate mode I and mode II fracture toughness, while digital image correlation (DIC) and thermography will provide insights into damage initiation and propagation. The effect of thermal cycling, humidity, and pressure on material degradation will also be assessed. Numerical simulations using **Ansys** or **Abaqus** will reproduce experimental conditions, linking microscale interfacial behaviour to macroscale structural performance. Cohesive-zone and multiscale models will be developed to predict fracture mechanisms and residual strength under coupled thermal–mechanical loads. You'll receive comprehensive training in cryogenic testing, materials characterisation, finite element modelling, and data analysis. This project will contribute to the development of next-generation composite cryogenic tanks, supporting safer and more efficient hydrogen-powered aircraft. Graduates will gain advanced expertise applicable to aerospace structures, composite design, and sustainable propulsion technologies.
This project will provide comprehensive training in experimental and computational methods for cryogenic composites. You'll learn low-temperature mechanical and fracture testing, damage analysis using DIC and microscopy, and finite element modelling with cohesive-zone and multiscale approaches. Training will also cover data analysis, cryogenic safety, scientific communication, and project management, preparing the student for independent research in advanced aerospace structures.
The School of Engineering is committed to promoting equality, diversity inclusivity as demonstrated by our Athena SWAN award. We welcome all applicants regardless of their gender, ethnicity, disability, sexual orientation or age, and will give full consideration to applicants seeking flexible working patterns and those who have taken a career break. The University has a generous maternity policy, onsite childcare facilities, and offers a range of benefits to help ensure employees’ well-being and work-life balance. The University of Southampton is committed to sustainability and has been awarded the Platinum EcoAward.
