Acta Polytechnica CTU Proceedings. 2017 ( vol. 7-13): Poslední příspěvky
Zobrazují se záznamy 21-40 z 115
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DESIGN OF CONCRETE CHIMNEYS VIA BEAM THEORY AND NONLINEAR SHELL ANALYSIS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This paper compares the load-bearing capacity of chimneys calculated via beam and shell theory. It becomes apparent that the design via beam theory is on the safe side for the vertical reinforcement of the chosen examples ... -
MODELING OF ANISOTROPIC GROWTH AND RESIDUAL STRESSES IN ARTERIAL WALLS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Based on the multiplicative decomposition of the deformation gradient, a local formulation for anisotropic growth in soft biological tissues is formulated by connecting the growth tensor to the main anisotropy directions. ... -
MICROSLEEPS AND THEIR DETECTION FROM THE BIOLOGICAL SIGNALS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Microsleeps (MS) are a frequently discussed topic due to their fatal consequences. Their detection is necessary for the purpose of sleep laboratories, where they provide an option for the quantifying rate of sleep deprivation ... -
THE FUTURE OF PASSENGER AIR TRANSPORT – VERY LARGE AIRCRAFT AND OUT KEY HUMAN FACTORS AFFECTING THE OPERATION AND SAFETY OF PASSENGER AIR TRANSPORT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The article outlines some human factors affecting the operation and safety of passenger air transport given the massive increase in the use of the VLA. Decrease of the impact of the CO2 world emissions is one of the key ... -
ASSESSMENT OF 2D-DIC STOCHASTIC PATTERNS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Cost of experimental testing of materials and structures subjected to mechanical loading often constitutes a significant portion of a project budget. Therefore a collection of data in a maximum possible amount is desirable. ... -
ARTIFICIAL NEURAL NETWORK FOR MODELS OF HUMAN OPERATOR
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This paper presents a new approach to mental functions modeling with the use of artificial neural networks. The artificial neural networks seems to be a promising method for the modeling of a human operator because the ... -
SIMULATION OF ELECTRIC AND HYBRID VEHICLES IN A VEHICLE SIMULATOR BASED ON A DETAILED PHYSICAL MODEL, FOR THE PURPOSE OF HMI EVALUATION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)In this article, we propose a software solution to study HMI of electric and hybrid electric vehicles in vehicle simulators. We will start with the description of a development process of a physical model for HEV simulation ... -
AUTOMATIC GENERATION OF ROAD INFRASTRUCTURE IN 3D FOR VEHICLE SIMULATORS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)One of the modern methods of testing new systems and interfaces in vehicles is testing in a vehicle simulator. Providing quality models of virtual scenes is one of tasks for driver-car interaction interface simulation. ... -
CORRELATION ANALYSIS OF VEHICLE FRONTAL IMPACT PARAMETERS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The article considers a possible improvement of road vehicle safety by using eCall – a system which initiates an emergency call in case of traffic accident. A possible way of better description of a frontal impact accident ... -
INTERACTIVE MOTION PLATFORMS AND VIRTUAL REALITY FOR VEHICLE SIMULATORS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Interactive motion platforms are intended for vehicle simulators, where the direct interaction of the human body is used for controlling the simulated vehicle (e.g. bicycle, motorbike or other sports vehicles). The second ... -
AN INTELLIGENT CO-DRIVER SURVEILLANCE SYSTEM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)In recent years many car manufacturers developed digital co-drivers , which are able to monitor the driving behaviour of a car. Sensors in the car measure if a car passes speed limits, leaves its lane, or violates other ... -
DANGEROUS DRIVER’S BEHAVIOR
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Different types of dangerous driver’s behavior are discussed in this paper. Case study analysis of young drivers’ hazardous behavior is also provided from authors’ practices. The practical research is collaborated with the ... -
MICROSCOPIC FEATURES OF CEMENT PASTE MODIFIED BY FINE PERLITE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The use of waste material and replacement of binder element in cementitious composites is in focus of material development. Perlite in the construction industry is usually used in form of lightweight aggregate enhancing ... -
SHEARING TESTS APPLIED TO PANTOGRAPHIC STRUCTURES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)With the advancements in 3D printing technology, rapid manufacturing of fabric materials with complex geometries became possible. By exploiting this technique, different materials with different structures have been developed ... -
COMPARISON OF VIRTUAL FIELDS METHOD, PARALLEL NETWORK MATERIAL MODEL AND FINITE ELEMENT UPDATING FOR MATERIAL PARAMETER DETERMINATION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Extracting material parameters from test specimens is very intensive in terms of cost and time, especially for viscoelastic material models, where the parameters are dependent of time (frequency), temperature and environmental ... -
NUMERICAL DISCRETISATION OF BUILT STRUCTURES ASSUMPTION AND REALITY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The second half of the 20th century was affected by the introduction of electronic data processing. The numerical methods appeared to be capable of solving every engineering problem. However, dealing with real problems, ... -
BaTiO3 FILMS DEPOSITED ONTO TiNb AND Ti SUBSTRATES - AMOUNT AND STABILITY OF BARIUM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)BaTiO3 films deposited onto TiNb and Ti substrates using hydrothermal synthesis method were studied in the presented work. These films are supposed to improve properties of bone implants due to their ferroelectric behaviour, ... -
THE CURRENT VIEW ON THE USE OF RECONSTRUCTION MATERIALS IN DENTISTRY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The hardest tissue in the human body is the enamel which covers the anatomical crowns of teeth. It must be resistant to mechanical stress and the chemical attack of many substances from food, drinks and products of the ... -
COMPARISON OF PARAMETERS OF SURFACE INTEGRITY OF MACHINED DUPLEX AND AUSTENITE STAINLESS STEELS IN RELATION TO TOOL GEOMETRY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The goal of this contribution was to describe parameters of surface integrity of two machined materials; austenite and duplex stainless steel. Residual stresses and presence of straininduced martensite were studied as a ... -
DLC/TI THIN FILMS PROPERTIES PREPARED BY HYBRID LASER TECHNOLOGIES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Layers of diamond-like carbon are usable in many fields of industry as well as in medicine. Many scientific groups have worked with different types of deposition techniques to prepare DLC layers with improved or unique ...