Continuum (filled polymer) is inhomogeneous and anisotropic. The Continuum is used in an injection moulding simulation at first (generally unnewton type of fluid). Then the continuum is solid (after cooling) and it is possible to carry out ordinary structural analysis with it. The solid continuum has different mechanical properties for each of discrete elements. A consequent stress field will generally (…)
The control of the standard pneumatic muscle actuators is provided by increasing the air pressure in the one artificial muscle, while reducing the pressure in the second (antagonist) artificial muscle. The paper contains information about the control and basic properties of the rotary actuator based on pneumatic artificial muscles. It presents equations for the values of the actuator arm displacement de (…)
Hybrid polymer composites are relatively new group of plastics that are rapidly developed. These materials combine high demands on the mechanical strength while keeping minimal density, thus generally opposing properties. Hybrid polymer composites have potentially very wide applicability, especially in aircraft or automotive industry where weight of the components is one of the critical parameters In th (…)
The automotive manufacturing represents one of the most developing segments of the engineering industry. The persisting tendency of designers to achieve the best technological level, car´s safety level and also ecological running at keeping the low price level means necessity to still implement into own production new types of materials. Among these materials also belong so-called sandwich materials whi (…)
This paper is aimed on the possibility of modeling, simulation and diagnostics of the suspension system of passenger cars. A simplified dynamic model of the car suspension system is defined. The model transformation into the Matlab – Simulink environment is described for the purpose of suspension system performance analysis. Following are examples of modeling and simulation of vehicle suspension in Auto (…)
The possibilities of simulation of technological process of aluminium anodic oxidation using the methodology of Design of Experiments (DOE) and theory of neural networks in order to monitor the anodizing process under various operating conditions are presented in this paper. The influence of chemical and physical input factors on the resulting AAO (anodic aluminium oxide) layer thickness at applied curr (…)
The authors are working closely the development of the prototype a unique serial kinematic structure of modular configuration. The prototype is developed in accordance with innovative ideas to develop a rotary linkage unlimited angle of rotation as the basic structural unit for such a kinematic motion structure. After verification of the prototype would be a proprietary idea of Universal Rotary Model (U (…)
In the frame of injection moulding production process not all raw material creates the final products and a waste material is generated (defective and rejected products, cold runners, etc.). This technological waste is very often reused in production, which reduces the final production costs, however, this regrind or regranulated material affects the final properties of the part. The negative impact of (…)
The paper is focused on monitoring of the machine milking process by infrared thermography method. The goal of the paper is thermography monitoring of the influence of machine milking on the udder and teats surface temperature and statistics valuation of measured values. Our study claimed suitability of IRT method for monitoring of machine milking. Statistical evaluation claimed statistically significan (…)
In terms of practice, maintenance is carried out to ensure the desired reliability of production systems so that the total cost of the operation of such systems are the lowest. Article describes the benefits and advantages of the integration of complex system maintenance and example of its application. The main objective is familiar with the problems of maintenance and failure of machinery and equipment (…)
Pressure tanks with the enamel surfaces play an important role mainly in the food industry and pharmacy. As the best advantage of these enamels there is very good resistance against aggressive environment at keeping the required mechanical properties of low-alloyed steels which are used for these applications. Enameling is generally applied as several particular layers whereas every of these layers has (…)
The paper deals with the influence of the selected technological parameters on cutting surface roughness in material laser cutting. It more closely examines and compares technological parameters such as cutting speed, laser performance, and gas pressure. The paper also contains the information on influence of the respective technological parameters on character of the material surface cut by laser S235J (…)
The submitted paper deals with the issue of unconventional technology of material laser cutting. The paper presents particular relations between the influence of gas pressure change and character of cutting surface after experimental measurements.[Gaspar 2013] Gas pressure change was applied in case of the selected sheetmetal thickness. The samples taken during experimental measurements were prepared in (…)
Constant development in mechanical engineering increasingly employs machines with high frequency revolutions requiring high efficiency and noiseless running and thus qualitative demands laid for belt gears increase as well. A new device for measuring and diagnostics of belt gears was designed to realize experimental measurements. Measurements can determine, for instance, slip of a V-belt expressed by t (…)
In industrial practice the material laser cutting is extensively used for rather accurate and high-quality cutting of both metal and non-metal materials. The objective of the submitted paper is to point out direct relation between influence of cutting speed and surface character of material cut by laser. Cutting speed ranks among the most significant technological parameters in laser cutting and represe (…)
Nylon is a widespread polymer material employed primarily for engineering applications. Its rheological behavior is suitable for a wide range of manufacturing techniques which produce parts with very specific properties. Representatives of prototype systems are included among these production technologies and this article is focused especially on 3D printing. FDM technology, that allows processing of ny (…)
The introduction of the submitted paper describes theoretical foundations of material laser cutting technology. The core analyses direct relation between influence of laser performance and cutting surface character when the cutting material thickness changes. The experimental measurements applied material S235JRG2 (according to EN 10025/90+A1/93) with thickness of 3 mm, 4 mm, 6 mm, 8 mm and 10 mm. The c (…)
The paper describes a proposal of positional adjustable camera system based on artificial muscles for rapidly changing products with different height and sizes on a conveyor belt. Measuring accuracy by camera system is heavily dependent on the distance of the camera system from the captured part. The ideal situation is that component occupying a largest area of the processed image. Current positioning t (…)
The article describes an automated production of process documentation in an environment of PTC Creo 3.0. Process documentation is a simplified form of technological documentation, which is directly generated in the environment of comprehensive CAD-CAM-CAE system. Creation of process documentation is based on design of the templates that contain all the necessary information to ensure a smooth productio (…)
Soft robotic arm actuated with pneumatic artificial muscles (PAMs) exhibits various interesting properties (static or dynamic) in contrast to conventional robots with electric motors. In addition to nonlinear relationship between various variables, PAMs are known for the hysteresis inevitably associated with their specific construction. In order to be able to develop a model useful for designing the eff (…)
The presented paper deals with the alternative of determination of state of new belt types of the belt gear in case of a designed device. The developing and structural-design stage, during which realization of a testing device was performed with Autodesk Inventor program, was followed by a production technology design. An electric motor serves as a device drive and belt gear with the other electric moto (…)
Presented article is focused on monitoring of plastic component production, which is used in automotive industry. Quality of products depends on inspection of production process and thus is essential to use all available control methods. Two methods were used for evaluation of monitoring. First method is verification of measuring system capability, using measuring system analyze. Subsequently was assess (…)
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