Experimental Study of Noise Levels Generated by Rolling Bearings in Different Stages of Deterioration

Abstract

Rolling bearings are one of the most commonly mechanical elements used in the construction of dynamic equipment. This element can be considerate as a noise source as a result of relative motion of the components from their construction: rings, rolling elements and cage. The noise level increase with the increase of the roller bearings wear. By analyzing of the roller bearings wear level, which appear due to the component failure, it can be determine the deterioration stage and their remaining lifetime with direct implication to optimal replacement and reduced of the negatively aspect: noise pollution, materials and energy consumption, waste quantities. This paper presents an experimental study on the increase of noise level generated by rolling bearings ZKL 1205K in different deterioration stages.

Evaluation of the Heating System From an Injection Molding Machine

“…The main factors that determine the quality of the finite parts obtained by using different processes and also injection are: the material used (thermoplastic materials, thermorigid and elastomer), the shape of the finite part, parameters of the injection regime (especially the plasticizing temperature of the material, the pressure and speed of injection). Also, the piece quality and performances after production and/or utilization, depend in many cases on the production parameters monitoring and optimization [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”