Abstract
This paper presents the dynamic response related to varying in indispensable parameters of pulley-belt system, a manufactured pulley- belt system has been built and experimental results have been obtained and analyzed accurately which reveal the effects of these parameters on indicated system. Manufactured system assembled from heavy steel structure, variable speed DC motor, speed measurement tool (tachometer), two shafts of 25 mm diameter, four pillow block ball bearings, V-belts and pulleys with different diameters (10, 15, 20, 25) cm. The fabricated system presents mechanical characteristics likes serial changing in rotational speed (500 to 2000) rpm, diameters ratios (1 to 2.5) and center distance (27 to 120) cm. accelerometer ADXL335 (3-axis) mounted on bearing brackets of drive and driven shafts and connected to Arduino type mega 2560 (microcontroller) which sending the data of vibration to the laptop in order to display it in Sigview software as a time and frequency domain band by FFT (fast fourier transform). Results showed the effects of change the values of rotational speed, center distance, and diameters ratios on vibration response of pulley-belt system
Highlights
Machines are very essential in our lives and it simplified the people’s works
This paper presents vibration monitoring using as a design technique, Results were taken from many experiments at different dimensions and values of center distance, radius ratio and speed, at constant tension 30N, and V13 belt type
Figures (5),(6),(7) of case 1, show response due to rpm increases, the graph in figure (5) present the graphs from sensor 1 at X1 direction, the affected region started from (0 to 180) Hz on the horizontal axis of graph where some peaks of acceleration appears with maximum values (0.6, 2.1, 4, 6) m/s2 corresponding to (500, 1000, 1500, 2000) rpm respectively
Summary
Diameter ratio which is the terrific tool to get the earliest warning that is beginning to occur in early stages of machines failure occurring may end up if we do not anything about earliest failures, in a sense, enables us to look inside the machine and see exactly what’s going on. A lot of experimental researches has specialized in vibration monitoring, the most important of them such as: Hu Ding [1] Investigation Periodic responses of a pulley belt system with one-way clutch under inertia excitation, the effects of the intensity of the driving pulley excitation and the inertia excitation are studied. This paper show how to industry and construction of machine contains most parts that get damaged and vibrate over time in plurality machines like motor .Gregor C epona et al [4] presented introduction of damping into the flexible multi body belt-drive model, Good agreement between the numerical result and the experimentally obtained data was found. This paper presents vibration monitoring using as a design technique, Results were taken from many experiments at different dimensions and values of center distance, radius ratio and speed, at constant tension 30N, and V13 belt type
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