In this paper is presented influence way of preparing steel reinforcement on rate of corrosion steel reinforcement in cement mortar. Reinforcements were prepared mechanically and chemically. Testing of corrosion of reinforcing steel in cement mortar is executing on the measuring device which consists of an electrochemical cell and potentiostat/galv...

By Farzet Bikić, Mirsada Rizvanovic

The material of journal end wall for cement mill is cast steel GS-20Mn5, WNo: 1.1120 according to standard DIN 17182. The journal end wall is made from two separately cast part - the plate and the cylinder, which are joined by welding. Inhomogeneity in the rough cast microstructure of materials, inadequate heat treatment of normalization, large non...

By Emina Kratina, Belma Fakić, Adisa Burić

The paper presents numerical procedure for determining fracture mechanics parameters in elastic￾plastic conditions aroundthe crack tip. Applied to this instance, the analysis included the determination of contour J integral by the energy domain integral method. Both, numerical model of standard dimensions SENB specimen and network of finite element...

By Bahrudin Hrnjica, Fadil Islamović, Dženana Gačo, Zijah Burzić

Finite element simulations of a fixed-ratio mode-mixity test (single configuration) are performed using cohesive zone model. Different simulation parameters are varied: automatic stabilisation, cohesive element viscosity and mesh size. A global and local approach are presented and used for calculation of energy release rate contribution from mode I...

By Josip Kačmarčik, Aleksandar Karač

The paper discusses the 3D printing technology and its impact on current industry practice. These are the advantages and the problems that must be solved to make this technology has become the new industry practices, as well as its impact on the development of materials for this technology with a special focus on metallic materials, respectively me...

By Diana Ćubela, Almaida Gigović-Gekić

The paper presents an application of the Additive Manufacturing (AM) technology using the Objet 3D Printer to develop femoral component of total knee endoprosthesis patterns for investment casting process. The goal of the paper is to outline the manufacturing technology intended for prototype production with the use of PolyJet technology and invest...

By Aleksandar Rajic, Slobodan Stojadinovic, Dorian Nedelcu, Ljubica Lazic Vulicevic

For the production of vertically perforated bricks with very good thermal insulation properties it is necessary to increase porosity of ceramic body. The most effective way to achieve this is the addition of organic substances into the clay mass. During the firing process combustion of these substances occures, leaving behind a large number of fine...

By Adnan Mujkanovic, Marina Jovanović

Partially crystalline metallic glass ZrCu was prepared in the form of ribbons by melt-spinning. The chemical composition and homogeneity of the samples alongside partial crystallinity with the existence of an amorphous matrix was confirmed. The measured value of microhardness shows a nonlinear dependence with the increase of Cu. By adding a small f...

By Kerim Hrvat, Amra Salčinović Fetić, Ljerka Slokar, Matej Lozančić, Andrija Franjković, Senad Hatibović, Suada Sulejmanović

Innovative idea of the device for detecting microstructure changes, concept and construction was carried out and controlled by authors of this article in cooperation with Slovenian industry. Since the electrical resistance is one of the most structurally sensitive properties of the materials, we used its measurement to detect microstructural change...

By Milan Bizjak, Blaž Karpe, Borut Kosec, Aleš Nagode, Goran Brovč, Mirko Gojić

This paper describes the behavior of welded steel components NN-70 in the presence of defects such as cracks in the operation of variable load. Knowing the conditions under which the particular construction operates and knowing the welding technology of the same, we can solidly calculate and assume the remaining life of exploration. By assessing th...

By Dženana Gačo, Zijah Burzić, Fadil Islamović, Nermin Bišćević