Page 8 - Vibrations-2
P. 8

Many machines make a lot of noise and as a mechanical


        engineer  you  may  be  asked  to  perform  noise  measure

        measurement. Consider a coal grinding machine.


























        The finer the coal powder, the more efficient the burn –


        the higher the temperature.


        Needed at coal power electricity power stations (kibble).



        These machines and extremely noisy. Noise measurements


        are necessary for health and safety reasons.


        When  such  machines  are  operating,  they  generate  high


        levels  of  noise  which  induce  vibrations  in  the  machine’s


        components.


        How does a failure in a grinding machine show itself?

















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