The environment in which managers currently operate is dynamic and turbulent. This fact affects the great complexity dynamism of changes. Thus, decision-making becomes more complex context sustainability. Decisive becoming rare, challenge globalization increasing. Under its influence, no longer deterministic. Decision-making processes prevail conditions uncertainty. In this context, there a very intense need to be acquainted with progressive tools support management apply acquired knowledge...

The paper analyses the impact of mechanical milling pre-treatment parameters on adhesive joint strength. Comparison surface roughness adherends after and its effect strength is analysed in tests. tests were performed C45 structural steel specimens, which subjected to machining at different parameters, with two types cutters. Adherends degreased prior joining. Two end mills used NFPaφ20 high-speed cutter R390-020B20-11L indexable cutter. was carried out three cutting speeds: 0.05, 0.15 0.30...

Our study focuses on two basic areas, firstly knowledge management, describing its significance and benefits to enterprises, but our main focus is the decision-making, decision making procedures their relation management. In we deal with use of managment in decision-making.As far as products are changing, so do technologies, markets business conditions well – same stands for enterprises global market economy. Consequently, there need change strategies management systems used by because they...

Due to customer driven economies, today's world markets are characterized by high fluctuations in market demand and frequent arrival of new technologies products.To stay competitive such manufacturing companies require continuous improvements both technical organizational areas their activity.The paper presents results the diagnosis provided area company producing cardboard packages recommendations make production process more efficient.Especially, among proposed most important ones are:...

Original scientific

This paper represents a multidisciplinary approach to biomechanics (medicine engineering and mathematics) in the field of collum femoris fractures, i.e., osteosyntheses with femoral/cancellous screws full or cannulated cross-sections. It presents our new numerical model femoral together their stochastic (probabilistic, statistical) assessment. In first part this article, simple is presented. The model, based on theory planar (2D) beams an elastic foundation 2nd-order theory, characterized by...

Objectives of the paper are intended to implement system solutions nondestructive evaluation technologies associated with verification equipment, preparation samples different types functional properties and their subsequent various scientific methods. The main objective experiments is transform new knowledge non-destructive into industrial practice in surface subsurface layers these technologies. aim increase level cooperation R & D institutions social economic practices through technology...

This contribution describes the progress of wear and influences contributing to a cutting tool during straightturning Nickel superalloy Inconel 718 according W. Nr 2.4668. According ISO 513 standard this alloy belongs among heat resistant materials; it is special used primarily for machine parts in aircraft industry. The experimental part was done purpose testing suitability proposed exchangeable inserts intended machining 718. Mechanisms magnitude durability tools were determined accordance...

Abstract Enterprises (regardless of size, hence small and medium sized including), in order to flourish stay competitive the future, have face properly address current challenges market economy. To them properly, means adapt adjust changeable conditions, e. g. they can not use 20th century business management conditions 21st century. One essential changes economy is new system creation welfare wealth both enterprises countries, that knowledge This development global move from industrial...

The product price consists from several items. Time needed for adequate control of is one the most significant items, which can get expensive. So it important, how measurement strategy (measurement plan) prepared. Time, not used products by 3D machine, financial loss company. This article deals with simulation contact measurement, as a progressive tool, preparation and creation plans coordinate machines. Furthermore, factors, that are taken into account offline programming during plan. Those...

The article deals with the evaluation of roughness machined surface, steel ISO C45 and 11CrMo9-10 after machining at interrupted cutting conditions. A regular cut irregular can have significant effect on resulting surface components. Parameters were measured slats, which was using simulator. slats gradually - 4, 3, 2 1 slat for getting cut. Selected parameters tested; Ra an average arithmetic deviation, Rq quadratic deviation Rz maximum height profile. Experiment took place in cooperation...

The article compared the strength results of single-lap adhesive joints made galvanized steel sheet. was determined for two methods surface treatment - using a degreaser (method B) and with-out A). samples were joined two-component epoxy based on Bisphenol A. tests carried out Zwick/Roell Z150 testing machine. analysis roughness parameters method A performed. highest shear value (8.82 MPa) ob-tained by B P120 abrasive paper. lowest (4.08 received P600 maximum values measured rec-orded...

Surface integrity reflects the properties of a material after it has been subject to some type manufacturing process or modification during machining and surface can also have great impact on parts function. The changes limit component quality in same cases performed as an unacceptable. It long known that method finishing combination roughness, residual stress, cold work, phase transformations strongly influence service performance manufactured fatigue corrosion. main aim article is testing...

Modifying of alloys is an important part the metallurgical process and involves course also aluminum, specifically Al-Si (silumin) in our case. One elements that it possible used to modify for type alloy antimony (Sb). This paper investigates potential impact modification this element AlSi7Mg0.3 on tool wear cutting process. Within experiments were made three casts master without additional from ligatures more subsequently modified by 0.05 wt% Sb cast. These castings then machined same...

The article deals with the evaluation of amount wear base material and selected hardfac-ing materials intended for tools wood processing in forestry after a test resistance to abrasive laboratory conditions. values average weight loss Wh[g] relative Ψh[-] were determined by calculation. topography surface track rubber disc testing device was evaluated confocal microscope. depth Pt[μm;mm] also state samples test, as well overall structure mixing hardwearing light microscopy. A touch roughness...

Paper deals with the machining of super-hard ceramics by turning. The introductory part analysis used ceramic materials and their use in technical practice. Since it is a very hard particularly resistant material, at present, increasingly to produce components that ensure long life high resistance, even aggressive environments where metal can no longer be used. Products from are pressed sintered directly desired shape, but some cases they have machined, which technically cause problem. aim...

Treatment of metal alloys is one the ways to affect quality and properties material.This also applies aluminum alloys.Nowadays so-called silumins are often used One them alloy AlSi7Mg0.3,which for production casting parts.The article describes experiments in area modification Al-Si alloys, realized at Faculty Mechanical Engineering Jan Evangelista Purkyně Univesity Ústí nad Labem, when influence calcium (Ca) on AlSi7Mg0.3was experimentally studied.Calcium elements, which possible be changing...

Paper deals with identification of the main causes deformations thin-walled bearings and comprehensive analysis bearing deformation suggestion possible solutions. It steel, its characteristics rings during heat treatment manufacturing process. Provides experimental measurement report uniformities on surface - called oval cradle, metallographic rings, as well an various processes affecting formation deformations.​

Commercially supplied inoculation wires have a guaranteed chemical composition but not the size and distribution of individual phases, which are very important for nucleation. Therefore, two commercial alloys used Al-Si (AlTi3B1 AlTi5B1) investigated in this paper. The emphasis is placed on their structural analysis intermetallic phases. Furthermore, grain refinement effect will be tested by adding these to AlSi7Mg0.3 alloy testing optimal amount added wires. results showed that phases...

Using of cutting inserts is currently a normal part the manufacturing process. The article deals with analysis tool wear after machining at one selected insert. Evaluation this insert was made by electron microscopy. There used SEM and EDS analysis. For purpose scanning microscope Tescan Vega 3 analyzer Bruker 16 which microscope. These can provide good picture structure construction inserts, their composition for situation on machining. This may assist in finding suitable conditions. As...

For a variety of engineering technologies, machining has specific position because it is technology that meets the highest requirements on accuracy and quality products involves processes are final, i.e. last in production parts machining. Therefore, these largely affects final shape dimensional high components hence their performance characteristics, particularly durability. Such methods designed to achieve grinding other finishing (superfinishing, polishing, lapping) involved percentage...