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Title
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Experimental Study on Noise Reduction Due to Damping Treatments
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Description
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Recently, a lot of damping material has been used for the control of structure-borne sound in electrical and automobile manufacturing, etc. in Japan. However, the accurate prediction of noise reduction by damping treatments is not easy from the catalogue data only. In this report, the sound radiated from rectangular plates and cubes made of damped steel plates with various loss factors is examined. Sound pressure levels radiated from these testing pieces are measured on the near field and the loss factors of the complex test plates are measured by the free beam testing method. The relation between the sound pressure levels and the loss factors of the test plates is discussed with regard to these different figures of the structures.
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Creator
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Okada, Ken
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Kanazawa, Junichi
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Publisher
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Wright-Patterson Air Force Base, OH : Wright Laboratory, Flight Dynamics Directorate, Air Force Systems Command,
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Date
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1991
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Format
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1 online resource (1 page)
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Type
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article
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Abstract
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Recently, a lot of damping material has been used for the control of structure-borne sound in electrical and automobile manufacturing, etc. in Japan. However, the accurate prediction of noise reduction by damping treatments is not easy from the catalogue data only. In this report, the sound radiated from rectangular plates and cubes made of damped steel plates with various loss factors is examined. Sound pressure levels radiated from these testing pieces are measured on the near field and the loss factors of the complex test plates are measured by the free beam testing method. The relation between the sound pressure levels and the loss factors of the test plates is discussed with regard to these different figures of the structures.
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Date Issued
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1991-08
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Extent
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1
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Corporate Author
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AT&S Tohsho Engineering Co., Ltd.
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Kobayasi Institute of Physical Research
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Report Number
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WL-TR-91-3078 Volume II, page EDH-1
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DoD Project
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2401
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DoD Task
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240104
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Distribution Conflict
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No
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Index Abstract
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Contrails only
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Photo Quality
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Not Needed
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Report Availability
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Full text available
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Provenance
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University of Colorado Colorado Springs, Kraemer Family Library
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Identifier
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ADA241312
