No 1 (2016)

The process of accelerated learning is differ than the traditional process: the teacher (mentor - a teacher, lecturer, instructor) not only teaches but organizes the educational process in which the student has to learn himself, teaching the same acts as the management of a specific process. Exploring the principles, approaches, continuing education and pedagogical way accelerated learning techniques, the authors argue: by what kind of creative and imaginative facilities teacher will create the conditions, mechanisms for the learning process where the student learns and acts professionally, actively masters of experimental and innovative educational activities at the university.

The article contains the new width calculating method of the cracks opening in normal sec- tions of ferro-concrete structures in bending via deformation model. Experimental data of valid cal- culations are given.

One must use a three-dimensional approach to determine the concentration of stresses in thin-walled elements of structures with local deepenings or defects. The stress concentration is analyzed for shells and panels with local deepenings. The authors investigated the effect of the finite element partition of a panel on the results and the concentration of the stress for the pan- els made from the different type of material: the model of Hooke and the model of Neo-Hooke (rubber-like material).

A pipeline with surfacing is investigated. It is shown what happens to the base metal of the pipeline if it is clad with surfacing under normal operating conditions and the obtained stresses and strains are investigated. The influence of surfacing on the through crack in the pipeline was investigated and its influence on a crack opening was also studied

The article describes experimental-theoretical method of determining technological sur- face residual stresses with application of layer-by-layer etching of the cantilever-fixed sample. The developed method of calculation of residual stresses in the surface layers of the material. It is shown that the proposed calculation method is more sensitive compared to the known and practically coincides with the classic, which uses sample with two simply supported edges.

The instability of soils due to the swelling phenomenon is among others at the origin of enormous damages in civil engineering works, such the deformations, the cracking, the tear- ing, the wear of the rotation surface and the destruction of the foundations observed at the infrastructures level (housing, socio-community centers, covered road or not). This phenome- non is a very complex and particularly threatening situation for the different construction projects, in a lot of regions of the world where these types of soilsare met and at the level of which we note premature damages of the works. It urges then to make specific arrangements during the execution of infrastructures. The phenomenon described above is also present in Benin mainly in the depression of Lama.