0000010825 00000 n 0000005646 00000 n 0000003344 00000 n • What vibration is - sources, and ways in which is it transmitted from source to receiver • Human perception of sound and vibration • Measurement scales and indices • Assessment approaches - relationship between noise and vibration and human response to them • Ways in which noise and vibration and their effects can be reduced 7.1 PURPOSES OF MEASUREMENTS There are many reasons to make noise measurements. 0000000776 00000 n startxref 0000006885 00000 n �x������- �����[��� 0����}��y)7ta�����>j���T�7���@���tܛ�`q�2��ʀ��&���6�Z�L�Ą?�_��yxg)˔z���çL�U���*�u�Sk�Se�O4?׸�c����.� � �� R� ߁��-��2�5������ ��S�>ӣV����d�`r��n~��Y�&�+`��;�A4�� ���A9� =�-�t��l�`;��~p���� �Gp| ��[`L��`� "A�YA�+��Cb(��R�,� *�T�2B-� 0000042969 00000 n 0000040236 00000 n 0000018105 00000 n 0000012553 00000 n 290 24 N'��)�].�u�J�r� The diagram on the previous page showed a typical value for vibration of 1.2 g rms. 0000055945 00000 n trailer 0000004703 00000 n 0000054554 00000 n 0000000016 00000 n H��U�o�0~�����i�>;��G~��j� �iR�J)�*A �h��w�IX�=lA����"BXBt֟pXl�N��9��!�π>v�����/��t��f8�8f&�|��i��b*�ޭD3M�^t} ��p���6�����g�����X�g!f���O.5�a�Q�.�޽K��6֍���Y�c�ͬ��b�����&2�e3!��$o{�qo�P��R���q'�4�0)��"�磱'N�� JL�>��i�DZ��F�l�h�Y{r5�.�a�7>R���D!�}G��>��a��3��Ia2���K�G1���K�aʡQߍ-b<4��T�����q;���4 �xm�}�F�K��19�V�(����嵺н��gA��QQH�:%��E9���"�89�ctŁH�w%��*�I(��r.c�Ut6Xq譣�.O?�U:�*�?��Lh2 �y#}�$�2�\�#�T�{,�vp�#]��)���$�HYoP�&p �嘵�����Z��Њ�`}��'�"…K�|��\�r�>yH�4w��5��Ӗ"�*zu�C�@�+`A�Tq'��t�\�'Ȋ�e�.V�bK�:ӧi1[輔��KcX�PSm[�i�/��� m�~�~������r�4?�:O�������O���rs�R.>���I���Z�V�$�D3 �!���2�*S�`p�}V��7x#��n>&���������?F��v���ݱu����s���OҮ2�ɫ1�=�|���5iJ���F?߿ {�� �ꇆ��n���Q�t�}MA�0�al������S�x ��k�&�^���>�0|>_�'��,�G! The test cycle is shown in figure 2.2.1. 0000001536 00000 n 4.10.2 NOISE AND VIBRATION METHODOLOGY . 0000015258 00000 n Vibration measurement can be achieved with a variety of vibration analysis and monitoring equipment. 0000003346 00000 n H�TV Pg�ffz��Y�4+�ڍJ"�UTd (W� (��) �/�M�|���^�D�*^�0 L���LH빖uI�`�t�e���n 0000016490 00000 n 0000004429 00000 n 0000010389 00000 n Ѩ���^�n=7ub���(X���(�f'��r������loL��;��n�&����EVxB���jHrb�>�>Է��7��,�*BDʼn;���L� I2�;>���H�,x�ɚ��sHM�U$d���6��=��*6��V�RL�w�� � !�W DjXLX֗��x����Z}�N-���>` 0000044114 00000 n BASELINE AIR QUALITY & NOISE AND VIBRATION ASSESSMENT REPORT APRIL 6TH 2016 CONSULTANTS: TEHILLA COMPANY LIMITED NEMA FIRM OF EXPERTS P.O BOX 640-30100, ELDORET 0717441448 www.tehilla.co.ke, info@tehilla.co.ke PRREPARED BY: NEMA REGISTERED LABARATORY P.O. 0000003877 00000 n 0000019241 00000 n 0000020614 00000 n 0 290 0 obj <> endobj I{x��� $S9�$q�B!��#p�d�H��3Wxヅ���Hb,K��,��O��L�,S};�[�G���� �@�x�D3�S��߿H8�!��=��P�.��5�(�2���)D�&h�u��z�2A;�GaX}{G;Q8ڏ�N�d��yH�*� ʁ~\]�"���A� ������i|~�e�2��7(�Q�}� %���p؃�E"��iT�k��G��vDC�D�������#ꑟ�����R;������q����")�|�_�hP����y�� _��� Noise measurement sites were selected based on a review of aerial photographs and visual <<6a915ed93465dc40a864e9701caec1cc>]>> Evaluate and compare noise control measures 4. 0000017361 00000 n x��V�Og����J��+;΂�U�EWˁ� Sf�*j��8E7͵b="�Q��ED�f�����IE�s�d���8��H��M�޵L����}���{���_{i@ �r �Hx{���2 >3�o���Ls���Lc?И��Q~��_!�P��-��"Y7:ʵЋ\���~�*%�T�0�~�o�.iJ��%�� z�u��1�8bJp1Br���3��jT;��C/�UDWӣ��)��VJF;r�������� xref 0000040081 00000 n 0000007280 00000 n 0000018935 00000 n 2y�.-;!���K�Z� ���^�i�"L��0���-�� @8(��r�;q��7�L��y��&�Q��q�4�j���|�9�� All speeds and torque levels are for the pinion. 1.5 Vibration Analysis and Measurement Equipment 1.5.1 Online data acquisition and analysis Critical machines are almost always provided with continuous online monitoring systems. Three tools are typically used to measure vibrational noise (noise) - a storage Oscilloscope (scope); a vibration sensor (sensor), which is generally a 'seismic grade' accelerometer 1; and a two-channel spectrum analyzer with sub-Hertz capability (analyzer)..