Vehicle Sound Power measurement Using the Acoustic Intensity Method

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by Richard D. Meich, Caterpillar Tractor Co, Aurora, IL, USA,
Kenneth L. Thompson, Caterpillar Tractor Co, Aurora, IL, USA,

Document Type: Proceeding Paper

Part of: Noise and Vibration Measurement: Prediction and Mitigation

Abstract: The use of the two microphone Acoustic Intensity Method of obtaining accurate measurement of over-all sound power of large wheel loaders is described. This system is in operation, within a factory environment, at the Caterpillar Aurora Plant. Its primary purpose is to assure that specified vehicle sound limits are being maintained. The system also provides diagnostic opportunities if units fail the validation test. The system will test various size vehicles in a minimum amount of area, in a timely manner and at moderate cost. Space allocated for the Acoustic Intensity test area can be used for other productive purposes when not being used for sound testing.

Subject Headings: Acoustic techniques | Vehicles | Vehicle loads | Diagnosis | Load factors | Validation | Earthmoving | Equipment and machinery |

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