Bio: Professor Xu Zhang is a Professor at the School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, China. He received his Ph.D. from Huazhong University of Science and Technology and was awarded a Humboldt Research Fellowship. His research focuses on the multiscale mechanics of advanced materials, particularly plasticity, damage, fatigue, and fracture, integrating theoretical modeling, numerical simulations, experimental characterization, and artificial intelligence. He has published over 140 SCI-indexed papers and serves on the Editorial Advisory Board of the International Journal of Plasticity. His research has been recognized with the International Journal of Plasticity Young Researcher Award (2024) and the Second Prize of the Natural Science Award of the Chinese Society of Theoretical and Applied Mechanics (2025).

Abstract: Hydrogen embrittlement degrades metal ductility and fracture resistance through complex interplay of hydrogen transport, dislocation plasticity, and fracture. Existing models treat hydrogen transport as stress-assisted diffusion with local trapping, neglecting convective transport by moving dislocations under strain gradient plasticity, leading to underestimation of hydrogen accumulation at critical microstructural features. To address this, we propose a thermodynamically consistent chemo-mechanical-damage model integrating nonlocal crystal plasticity, hydrogen diffusion-trapping, and phase-field fracture, with explicit coupling between dislocation flux and trap-site hydrogen flux. Applied to polycrystalline Ti-6Al-4V under tension, the model quantifies the distinct roles of geometrically necessary and statistically stored dislocations in trapping, and demonstrates that strain-gradient-plasticity-driven transport substantially enhances hydrogen enrichment at grain boundaries and crack tips, accelerating crack initiation and intergranular fracture. This work highlights the previously underestimated role of strain gradient plasticity in hydrogen-assisted fracture.

Bio: Jian-Feng Wen is a full professor in Mechanical Engineering at East China University of Science and Technology (ECUST). His research has been focused on damage and fracture of high temperature structures. He serves as a committee member of the Pressure Vessel Institution (Chinese Mechanical Engineering Society, CMES), the Materials Institution (CMES), and the Fatigue Institution (Chinese Materials Research Society, C-MRS). He is also the Secretary General of the China Structural Integrity Consortium (CSIC), an Associate Editor of J Mech Behav Mater, a section editor of Fracture and Structural Integrity, and an Editorial Board Member of Int J Struct Integr, Materials, Materials for Mechanical Engineering and Chinese Quarterly of Mechanics. He is currently the principal investigator (PI) of more than 30 research projects funded by the National Natural Science Foundation of China (NSFC), the Ministry of Industry and Information Technology, the Ministry of Science and Technology, etc. He has published more than 80 peer-reviewed papers, including those in top journals such as Nat Mater, J Mech Phys Solids, and Acta Materialia. In addition, he holds more than 40 patents and 10 software copyrights. Based on these achievements, he has been selected as an NSFC Excellent Young Scholar, a Shanghai Eastern Scholar, and a Fujian Minjiang Scholar.

Abstract: Understanding how manufacturing-induced residual stresses influence long-term fatigue resistance is essential for the structural integrity of aero-engine turbine discs. Even when microstructures and tensile properties are comparable, different regions of a forged disc can exhibit markedly different very high cycle fatigue behaviours. This presentation addresses the origins of this variation and how it evolves with temperature, focusing on the interplay between inherent residual stress, machined surface integrity, and microstructure-sensitive crack initiation in Inconel 718. Compressive and tensile residual stresses modify the effective mean stress and local crack-driving force, altering the competition between surface and subsurface crack initiation. Surface roughness introduces local stress concentrations, while the combined surface and inherent residual stress states influence whether these sites become dominant fatigue origins. At elevated temperature, thermal relaxation weakens the influence of the initial residual stress state, reduces location-dependent differences in fatigue resistance, and changes the relative importance of near-surface microstructural heterogeneities. These mechanisms are brought together through a stress–life correlation that accounts for surface roughness and residual stress, providing a basis for interpreting fatigue data across different manufacturing and thermal conditions. The findings highlight the need to consider both the spatial distribution and thermal stability of residual stresses when translating laboratory fatigue results into component assessments, with implications for manufacturing process optimisation, representative fatigue testing, and durability assessment of forged turbine discs.

Bio: Yilin Zhu is a Professor and Doctoral Supervisor at Ningbo University, China. He was a Postdoctoral Research Fellow at the National University of Singapore and a Visiting Scholar at the University of Siegen, Germany. His research primarily focuses on the mechanics of auxetic metamaterials. He has led 15 research projects, including two funded by the National Natural Science Foundation of China and a subproject of a key research program supported by the Science and Technology Commission of the Central Military Commission. He has published over 90 SCI-indexed papers, with more than 3,100 citations on Google Scholar, and holds 10 granted invention patents. He has received the Wang Ren Young Scientist Award and the National Outstanding Young Scholar Award in Metamaterials. He has also been listed among the World's Top 2% Scientists, selected as a Reserve Candidate for Academic and Technical Leaders in Sichuan Province, and recognized as a High-Level Talent (Outstanding Talent) in Ningbo.

He currently serves as Secretary-General of the Multibody System Dynamics Committee and a member of the Training Committee of the International Society for Mechanical System Dynamics (ISMSD), as well as a Council Member of the Metamaterials Branch of the Chinese Materials Research Society. He is an Editorial Board Member of International Journal of Applied Mechanics and a Young Editorial Board Member of International Journal of Extreme Manufacturing, Chinese Journal of Applied Mechanics and Advanced Engineering Sciences.

Abstract: Auxetic metamaterials, characterized by their unique negative Poisson's ratio effect, have shown great potential in impact protection, energy absorption, deformation control, and multifunctional structural design. However, conventional auxetic metamaterials still face significant challenges, including insufficient understanding of complex deformation mechanisms, limited approaches for performance tailoring, and inadequate adaptability to engineering applications. To address these challenges, systematic investigations have been conducted on innovative structural design, deformation mechanisms, and performance tailoring of auxetic metamaterials. First, novel topological configurations of auxetic honeycomb structures have been developed to address the challenge of simultaneously enhancing their auxetic effects and load-bearing capacity. The underlying relationships among topological configurations, deformation modes, auxetic effects, and load-bearing performance have been elucidated, providing new approaches for the synergistic enhancement of auxetic effects and load-bearing capacity. Second, novel honeycomb structures exhibiting both negative Poisson's ratio and negative thermal expansion have been developed to meet the demands for integrated mechanical and thermal functionalities. The effects of structural topology and material configurations on mechanical deformation and thermal expansion behavior have been investigated, leading to new design approaches for achieving both negative Poisson's ratio and negative thermal expansion in multifunctional auxetic metamaterials. Finally, to overcome the limitations of conventional monolithic metamaterials in terms of manufacturing cost, structural reconfiguration, and adaptability to complex curved geometries, a modular construction strategy has been proposed. The effects of modular assembly and interfacial interactions on the overall mechanical performance have been investigated, offering new approaches for flexible construction and engineering applications of auxetic metamaterials. These studies provide theoretical insights and methodological support for structural design, performance tailoring, and engineering applications of auxetic metamaterials.

Bio: I am an Associate professor of Applied Physics, known as a patient, a motivated researcher with, ability to think critically when dealing with complex subject matter, like material science and the radiation effect on composite materials.

I have effective presentation skills, both theoretical and practical. I have a high degree of computer literacy and demonstrated ability to integrate technology into the learning environment and teaching methodology. I like working with industry related problems with good programming skills and experience with GUI

Also i have Skills for working in a team or more.

Abstract: Core Solid-State Principles: Concrete breakdown under radiation is not a simple, large-scale chemical failure. Instead, it is an ongoing chain reaction of atomic collisions, momentum transfers, and ionization events that permanently weaken the material's structural integrity from the inside out.