Professor Grzegorz Glinka is one of the world's leading experts on weld fatigue design. His popular seminars have already been offered in many countries around the globe including the USA, Europe, New Zealand, and Australia. The seminar gives a comprehensive update on advanced fatigue design methods and prevention techniques concerning fatigue failures.
Ideally, everything required to design a component or structure could be covered by published standards. However, for various reasons, design standards do not usually prescribe the "optimal" design solution for every situation leaving designers with multiple options. This seminar will provide a guideline on the application of some commonly used design standards and fatigue life prediction techniques with plenty of hands-on guidance for designers and fabricators. It will give a guideline on key methods to improve fatigue performance at the design and fabrication stage. Several case studies and everyday fractures and cracks in engineering objects will be discussed. Methods to optimize fatigue performance and fabrication cost of welded joints will be discussed in the last session of the seminar.
A fatigue assessment is based on two fundamental components: the analysis of fatigue loads and fatigue resistance of the analyzed welded structure. On the load side, the fatigue actions can be given in form of forces acting on the component, nominal stress in the critical section, the structural hot-spot stress at a weld toe, notch stress at an effective weld notch, or the stress intensity factor at a crack tip. The exact knowledge of appropriate sequence of steps in the fatigue analysis is one of the greatest unknowns and a source of many uncertainties. On the resistance side, the material properties may be given in way of the Wohler (S-N) curve, strain-life material curve or crack propagation material parameters for fracture mechanics assessments. The knowledge of the sequence of steps appropriate for selected fatigue analysis method and the material resistance is essential for the successful fatigue design and fatigue durability assessments. The seminar will address all essential issues concerning fatigue assessment of various engineering objects. Assessment techniques such as the Nominal Stress (S-N), the Local Stress-Strain (ε-N), the Hot Spot Stress, and the Fracture Mechanics Method will be covered using real examples. Hot topics such as the cycle counting procedures, cumulative damage, and the use of the Finite Element method for fatigue assessments will be discussed as well. The seminar will offer a forum for discussions of individual fatigue problems and case studies. The seminar is an ideal add-on to those interested in expanding their understanding of the subject and design analytical and numerical skills.
Delegates are encouraged to bring along their fatigue problems to contribute to the general discussion.
The seminar will be particularly relevant for people involved in design, optimization, and fatigue assessment of steel structures and machinery components. Therefore, attendance is recommended to designers, structural engineers, mechanical engineers, fabricators, welding engineers, quality control, maintenance and inspection personnel, university lecturers, students, and researchers. The seminar will be especially relevant to the following industry sectors: steel construction, infrastructure fabrication and maintenance, bridge building, transport industry, power generation, machinery, shipbuilding, maintenance and aviation industry, ground vehicles, and earth moving machinery.
Professor, Department of Mechanical and Mechatronics Engineering, University of Waterloo
Dr. Glinka has been with the University of Waterloo, Ontario, Canada since 1989. He was a Post-Doctoral Fellow at The University of Iowa (USA) in 1978 and later he lectured at the University of Metz, France and at the University College London, England. He holds a PhD and D.Sc. from the Warsaw University of Technology. He has also acted as an expert of the United Nations and visiting professor at The Aalto University in Helsinki, Finland. Dr. Glinka is a specialist in fracture and fatigue of steel structures and mechanical engineering machinery. His research interests include fracture of materials, fatigue of structures, multiaxial fatigue and creep of engineering materials, computer aided design, FEM-elastic plastic stress strain analysis and reliability. His recent research activities concern modelling of fatigue crack growth under random loading and fatigue optimization of welded structures. Dr. Glinka has published over 190 related articles in technical journals and textbooks.