THE APPLICATION OF IDEALIZATION AND RESPONSE ANALYSIS TO DIESEL ENGINE NOISE ASSESSMENT
A method of determining the contributions to noise radiated by a diesel engine using idealization and response analysis is described. An idealization of the engine surface as a set of flat plates is used to calculate radiation efficiency from physical properties and edge constraints of each plate, and the velocity response of the engine surface is measured using accelerometers. This data is used in a simple acoustical power relationship to determine 1/3 octave sound pressure levels under free field conditions for the engine and iindividual noise sources on the engine. The theory is discussed and an example of the application of the method is given, and compared briefly with the more traditional noise source identification technique of lead cladding. /GMRL/
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Supplemental Notes:
- Proceedings of the Diesel Engine Noise Conference, Society of Automotive Engineers, August 1975.
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Corporate Authors:
Society of Automotive Engineers (SAE)
400 Commonwealth Drive
Warrendale, PA United States 15096 -
Authors:
- Yorke, P J
- Conference:
- Publication Date: 1975
Media Info
- Pagination: p. 156-165
Subject/Index Terms
- TRT Terms: Accelerometers; Diesel engines; Electromagnetic radiation; Engines; Evaluation; Noise; Sound absorption; Velocity
- Old TRIS Terms: Engine noise
- Subject Areas: Environment; Highways; Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00133517
- Record Type: Publication
- Report/Paper Numbers: SAE #750836
- Files: TRIS
- Created Date: Aug 3 1976 12:00AM