The paper deals with methods of independently characterizing sources of structure-borne sound. The concept of mirror power is introduced, which is the power delivered by a vibration source when connected to a passive receiver structure that is a mirror image of itself. A second quantity, the charact
The measurement of structure-borne sound transmission using impulsive sources
β Scribed by R.J.M. Craik
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 334 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0003-682X
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β¦ Synopsis
A simple method to measure structure-borne sound transmission is described. Measurement is made of the level difference in the acceleration between two structural elements using a plastic headed hammer as a noise source. The method is at least as accurate as conventional measurements made under steady-state conditions using continuous noise sources and can be carried out with less instrumentation on site and in about a tenth of the time.
The portability of the source greatly simplifies the measurements as a hammer can be used to hit structures in a wide variety of positions whereas shakers can only be used in limited situations. In addition, attaching a shaker to a wall can damage the wall surface whereas, with care, a hammer hit will not.
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