vibration and noise measurement pdf

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0000030512 00000 n n�3ܣ�k�Gݯz=��[=��=�B�0FX'�+������t���G�,�}���/���Hh8�m�W�2p[����AiA��N�#8$X�?�A�KHI�{!7�. available tools for noise and vibration measurement. Optimize selection of noise control devices, methods, materials 3. 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).. 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�� _��� xref 0000017590 00000 n 0000018105 00000 n �/�M�|���^�D�*^�0 L���LH빖uI�`�t�e���n 0000007280 00000 n H���yTSw�oɞ����c [���5la�QIBH�ADED���2�mtFOE�.�c��}���0��8�׎�8G�Ng�����9�w���߽��� �'����0 �֠�J��b� 0000002988 00000 n 0000033653 00000 n endstream endobj 13 0 obj<> endobj 14 0 obj<> endobj 16 0 obj<> endobj 17 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 18 0 obj<> endobj 19 0 obj<> endobj 20 0 obj<> endobj 21 0 obj<> endobj 22 0 obj<>stream 0000013968 00000 n Ship Vibration and Noise Guidance Notes Section 2. <<6a915ed93465dc40a864e9701caec1cc>]>> 0000002478 00000 n 0000007074 00000 n Noise measurement sites were selected based on a review of aerial photographs and visual 0000001713 00000 n 0000004780 00000 n "F$H:R��!z��F�Qd?r9�\A&�G���rQ��h������E��]�a�4z�Bg�����E#H �*B=��0H�I��p�p�0MxJ$�D1��D, V���ĭ����KĻ�Y�dE�"E��I2���E�B�G��t�4MzN�����r!YK� ���?%_&�#���(��0J:EAi��Q�(�()ӔWT6U@���P+���!�~��m���D�e�Դ�!��h�Ӧh/��']B/����ҏӿ�?a0n�hF!��X���8����܌k�c&5S�����6�l��Ia�2c�K�M�A�!�E�#��ƒ�d�V��(�k��e���l ����}�}�C�q�9 ��/�hn��� 0000016490 00000 n 0000020614 00000 n 0000001891 00000 n The gravitational constant "g" is still widely used for acceleration levels al- though it is outside the ISO system of coherent units. 0000007484 00000 n 0000069347 00000 n 0000043582 00000 n �@L4�(F. Noise data contains amplitude, frequency, time or phase information, which allows us to: 1. The test cycle is shown in figure 2.2.1. H�TV Pg�ffz��Y�4+�ڍJ"�UTd (W� (��) The diagram on the previous page showed a typical value for vibration of 1.2 g rms. 0000012252 00000 n The vibration parameters are almost universally measured in metric units in accordance with ISO requirements, these are shown in the table. 0000006885 00000 n 0 0000043815 00000 n 0000000016 00000 n The noise and vibration measurements were carried out at three different torque levels, 140, 500 and 1000 Nm. xref 0000008538 00000 n 0000005646 00000 n startxref 0000019241 00000 n trailer 0000003877 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!��$o{�qo�P��R���q'�4�0)��"�磱'N�� JL�>��i�DZ��F�l�h�Y{r5�.�a�7>R���D!�}G��>��a��3��Ia2���K�G1���K�aʡQߍ-b<4��T�����q;���4 �xm�}�F�K��19�V�(����嵺н��gA��QQH�:%��E9���"�89�ctŁH�w%��*�I(��r.c�Ut6Xq譣�.O?�U:�*�?��Lh2 0000017754 00000 n 0000055945 00000 n 290 24 All speeds and torque levels are for the pinion. 0000003346 00000 n 0000012553 00000 n To characterize the existing noise conditions along the alignment, field measurements were taken in fall 2001, and spring and fall 2002, fall 2004, and fall 2007. x��V�Og����J��+;΂�U�EWˁ� Sf�*j��8E7͵b="�Q��ED�f�����IE�s�d���8��H��M�޵L����}���{���_{i@ �r �Hx{���2 >3�o���Ls���Lc?И��Q~��_!�P��-��"Y7:ʵЋ\���~�*%�T�0�~�o�.iJ��%�� z�u��1�8bJp1Br���3��jT;��C/�UDWӣ��)��VJF;r�������� For each torque level, measurements were made for 50 seconds each at constant speeds of 1000, 1500 and 2000 RPM and as speed uniformly (linearly) increased from 500 to 2550 RPM. 0000054554 00000 n Noise Methodology. �y#}�$�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?߿ {�� Until the mid 1990s, multichannel data acquisition systems were relatively expensive. 290 0 obj <> endobj 0000001536 00000 n 0000015258 00000 n $`�4�[ڸ1~��C�o�TW_�+�۟?�V�9�x��Tu���!��+��x0�LU�ě�fr��_���{x"���_������޺�`Kd��ŋ.����l�'版�+�&7�յr>(Ϭ1��tl\Y�S�Xa����e��9�k�47"X�I?�A��ԥ�)m�#s��^V6(��t��eO�f # q�g �(/��EmY� :t)[�fхH�[�g�n��6ڛ'�5_���O�c�ʅ��Q�r���4�k�_�:���I�j��� ��L����aڄǿf7U��ܰOU^x�yr�.bi�^Wݝ���Nt�K;jVKrN��Y�4�|�m������l")绱�qjzS ���hi�_����6�f�b����z�'2W�E�+ꔵ��h��}[7���O����r|+����9k�� >��>�a����1�u����in 0000000776 00000 n 0000002570 00000 n Prosig sells hardware and software solutions and can offer consultancy, rental and Vibration measurement can be achieved with a variety of vibration analysis and monitoring equipment. endstream endobj 291 0 obj<> endobj 292 0 obj<>/Encoding<>>>>> endobj 293 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC]/ExtGState<>>>/Type/Page>> endobj 294 0 obj<> endobj 295 0 obj<> endobj 296 0 obj<> endobj 297 0 obj[/ICCBased 307 0 R] endobj 298 0 obj<> endobj 299 0 obj<> endobj 300 0 obj<> endobj 301 0 obj<> endobj 302 0 obj<>stream 313 0 obj<>stream Noise and Vibration Sixth Edition Measurement Handbook Measurement & Sensors Key information on which sensors to use and how to use them Algorithms & Analysis The basic and advanced methods of noise & vibration analysis Condition Monitoring Learn why and how to monitor vibration in large rotating plant . 0000004703 00000 n 0000003178 00000 n 0000000016 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-� 0000002186 00000 n 0000003018 00000 n 0000009467 00000 n 5.2.8 Vibration Measurement Report Forms 19 5.2.9 Sound Measurement Report Forms 20 PART 2 - PROCEDURES SECTION 6 ... Ambient Noise (sound): All encompassing noise associated with a given environment at a given time, including noise from the sound source of interest. 0 0000009501 00000 n 0000042969 00000 n 0000010389 00000 n 4.10.2 NOISE AND VIBRATION METHODOLOGY . Unless specified otherwise vibration amplitude, ± a, is half the peak to peak value of the vibration, Figure 2.1. ��w�G� xR^���[�oƜch�g�`>b���$���*~� �:����E���b��~���,m,�-��ݖ,�Y��¬�*�6X�[ݱF�=�3�뭷Y��~dó ���t���i�z�f�6�~`{�v���.�Ng����#{�}�}��������j������c1X6���fm���;'_9 �r�:�8�q�:��˜�O:ϸ8������u��Jq���nv=���M����m����R 4 � 0000002488 00000 n 0000006828 00000 n %%EOF 0000019317 00000 n The noise and vibration measurements were carried out at three different torque levels, 140, 500 and 1000 Nm. 0000002112 00000 n trailer e�H���G�O��fr��� sy�v�X���~ �2��NU�Ք�R����j��A�Ē?cʰ;Z����2�C�~��� j�fk�y�縉�,��'�Q�BE�>u�Z����J j�J�7�̆���Q4s�37�nR�`�\����5V6��[g��TIkl ��ܳ)�{�E��d"G{g�׉�.~q[��|�Br&�Z6/isά?���3Ko�6m����S���c��5��T�/�:��M}s x�fu�J��LO٪K�U���sB�K^ο��2���]gW���t`�ڽ�Ų�m��l Noise, Vibration, and Harshness i TABLE OF CONTENTS INTRODUCTION 1 OBJECTIVES 1 ACRONYMS 2 LESSON 1 EVALUATING NVH CONCERNS 5 PRELIMINARY INFORMATION 5 Pre-road Test Inspection 7 Vehicle Road Test 8 Road Test Methods 9 Diagnostic Worksheet Page 1 10 Diagnostic Worksheet Page 2 11 LESSON 2 DIAGNOSING WHEEL AND TIRE VIBRATION 13 … 0000043263 00000 n %PDF-1.6 %���� 0000021929 00000 n 12 49 0000040081 00000 n x�b```f``]���� ��A�X��,+z��`������N Lt�i�jRetqq��h��b�� ��t���A����A�@���;V�m��lߜ?�0�hT,䈌����pQ3�������O }Z%��&ݕb��|��qw�>� "p��f8���� � b�,� endstream endobj 303 0 obj<> endobj 304 0 obj<> endobj 305 0 obj<> endobj 306 0 obj<> endobj 307 0 obj<>stream <<652298F695FF8D4BA4A76C19A328DF1B>]>> 2y�.-;!���K�Z� ���^�i�"L��0���-�� @8(��r�;q��7�L��y��&�Q��q�4�j���|�9�� I've worked ... With the much higher resolution (16 bit) and low noise characteristics this can also be used for very fine and small amplitude vibration measurement. Ѩ���^�n=7ub���(X���(�f'��r������loL��;��n�&����EVxB���jHrb�>�>Է��7��,�*BDʼn;���L� I2�;>���H�,x�ɚ��sHM�U$d���6��=��*6��V�RL�w�� � !�W DjXLX֗��x����Z}�N-���>` 0000004429 00000 n 0000001672 00000 n Overall vibration measurements, usually expressed as the RMS value (except for displacement where peak-peak values apply), form the basis of condition monitoring measurements and trending, but have limited value for analysis. Measurement 2.1 Vibration 2.1.1 Units Vibration velocity amplitude (± mm/s) is adopted in these Guidance Notes as the principal parameter for evaluating shipboard vibration. 0000042618 00000 n For each torque level, measurements were made for 50 seconds each at constant speeds of 1000, 1500 and 2000 RPM and as speed uniformly (linearly) increased from 500 to 2550 RPM. �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�j@�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= 0000022922 00000 n 0000001276 00000 n 15 0 obj<>stream 0000040236 00000 n 0000042912 00000 n 12 0 obj <> endobj 0000009076 00000 n Driven by the audio industry, new electronics have been developed that revolutionize the price/performance of noise and vibration data acquisition systems. 0000002698 00000 n 0000007519 00000 n Guideline Noise and vibration from blasting Page 4 of 5 • ESR/2016/2169 • Version 3.01 • Last reviewed: 18 MAR 20 Department of Environment and Science RecordingDetails of the measurement instrumentation, measurement procedure, location, date and time of recording and conditions prevailing during measurements must be recorded for each assessment.

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