Assoc. Prof. Svetlana Shambina,
Peoples' Friendship University of Russia (RUDN University), Russia
Svetlana L. Shambina graduated from Peoples’ Friendship university of Russia (Moscow) with a degree in Civil Engineering. She obtained her PhD diploma on Structural Mechanics in 1995. The name of PhD thesis was “Calculation of structures made of anisotropic composite materials”. The major fields of study are design and calculations of structures made of anisotropic composites, architecture and calculations of large-span structures of complex geometric shape.
At present she is an Associate professor of the Department Architecture and Civil Engineering in Peoples’ Friendship university of Russia (RUDN University).
Speech Title: ANISOTROPIC COMPOSITE MATERIALS – THEIR APPLICATION AND SOME APPROACHES TO THEIR STRENGTH CALCULATIONS
Abstract: In the recent years composite materials find wide application in various fields of engineering because of their advantages over other structural materials. Composite materials have the most attractive prospects because of their physical and mechanical characteristics. For example strength of fiberglass (glass-reinforced plastics or GRP) is comparable to strength of steel, their thermal conductivity is equal to the one of wood, and its ease is similar to the ease of PVC. A large class of structures which have been usually made of metal and concrete, aluminum and PVC-plastic (polyvinylchloride) can be successfully and efficiently transferred to the use of fiberglass. Usage of fiberglass in different spheres of engineering especially in civil engineering will be discussed. Anisotropy of the physical and mechanical properties of fiberglass is a very important feature of fiberglass plastics made on the basis of glass fabrics or directed glass strands. A study of anisotropy of fiberglass's elastic and strength properties has a great theoretical and practical interest. Using the correct choice of the anisotropy's character in fiberglass it is possible to create lightweight structures of equal strength. This is a very important advantage of GRP. A variety of composites' physical and mechanical properties requires an improvement of existing methods and creation of new ones for calculation of structural elements made of these materials. This is an important task which will contribute to their wider use. The topical is the question of the strength calculation for GRP structural elements which are working under complex stress state. For practical calculations of elements made of anisotropic materials it is necessary to use any criterion of strength for anisotropic materials. The basic characteristics of the material used in the strength criteria are obtained from experiments in simple forms of strain-stress condition. In the report some famous criteria of anisotropic materials will be examined, and their advantages and disadvantages will be discussed. The author suggests some new variants of strength criteria for anisotropic.
Assoc. Prof. Frolovskaia Aleksandra ,
Siberian Federal University, Russia
Associate Professor of the Department of building structures and controlled systems of School of Engineering and Construction of Siberian Federal University, Russia
1998 – 2003: Krasnoyarsk State Academy of Architecture and Construction (Krasnoyarsk), qualification - civil engineer.
2003 - 2006: School of Engineering and Construction of Siberian Federal University, Ph.D. in civil engineering.
The topic of Ph.D. thesis: "Investigation of deformations and improvement of structural solutions of frame elements of facade systems with ventilated air gap" (05.23.01 - Building structures, buildings, and structures).
Place of employment: Siberian Federal University, School of Engineering and Construction, Department "Building structures and controlled systems".
The main disciplines taught are steel structures, including welding; building frames from lightweight steel structures; steel structures of high-rise and large-span buildings; research work; architecture of civil and industrial buildings; history of accidents and disasters.
Directions of scientific activity: hinged facade systems; lightweight steel structures; steel slender sections; accidents and disasters.
At present, the head of the educational program "Construction of unique buildings and structures", the developer of the master's program "Forecasting and warning of emergencies in construction", the developer of the postgraduate program "Building structures of buildings and structures."
Speech Title: TBA
Prof. Ho-Sung Lee, Korea Aerospace Research Institute, Korea
Prof. Lee, Ho-Sung is a professor at Aerospace System Engineering Major, University of Science and Technology and at the same time a principal researcher at Korea Aerospace Research Institute, which is a government research institute. He attended University of North Carolina at Chapel Hill and University of California-Davis, where in 1990 he received his Doctor's degree in Materials Science. Since then, he has been a principal researcher at KARI, Korea Aerospace Research Institute. He is actively working on aerospace materials and manufacturing for space launcher and spacecraft. His expertise is Sueperplastic Forming and Solid State Bonding (Diffusion bonding, Friction stir welding, Pressure bonding, etc.) of lightweight aerospace alloys; Al-Li alloys, Titanium alloys, Super-alloys and Stainless Steels.
Speech Title: Characterization of Elevated Temperature Mechanical Behavior by Blow Forming
Abstract: The analyses of the hydrostatic forming of thin sheets into cylindrical die provided the equivalent relationships between biaxial blow forming and tensile test. This paper gives an overview of current work in characterizing mechanical properties of some aerospace materials by convenient blow forming for manufacturing components. Finding the best material to use for a particular application is not simple and it depends on many factors including mission requirements like performance and safety, design requirements, strength to density ratio, operating temperature, and material technology prospects like current state of affordable materials/processes technologies. Since in most sheet metal forming operation biaxial as well as uniaxial stress state exists, it is important to understand the flow stress as a function of stress state. At constant gas pressure, the strain rate in which the metal sheet experiences varies and therefore the strain rate sensitivity can be obtained in a single loading. Tensile tests were performed at elevated temperature and materials parameters were compared with the one obtained from blow forming tests. The results include typical aerospace materials-aluminum alloys, titanium alloys, stainless steels, and superalloys.