http://www.cnr.it/ontology/cnr/individuo/prodotto/ID84832
Investigation on standardised sound intensity methods for the determination of the sound power level of hydraulic pumps (Contributo in atti di convegno)
- Type
- Label
- Investigation on standardised sound intensity methods for the determination of the sound power level of hydraulic pumps (Contributo in atti di convegno) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
Francesca Pedrielli , Eleonora Carletti (2005)
Investigation on standardised sound intensity methods for the determination of the sound power level of hydraulic pumps
in Forum Acusticum, Budapest (H), August 29-September 2
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Francesca Pedrielli , Eleonora Carletti (literal)
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- http://webistem.com/acoustics2008/acoustics2008/cd1/data/fa2005-budapest/paper/470-0.pdf (literal)
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- Proceedings of FORUM ACUSTICUM 2005 Conference (literal)
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- Titolo
- Investigation on standardised sound intensity methods for the determination of the sound power level of hydraulic pumps (literal)
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- Abstract
- The new test code (ISO 16902 - 2003) for the determination of sound power levels of hydraulic fluid power pumps using sound intensity techniques intends to greatly simplify the measurement of the noise generated by these components. In fact, the methods based on sound pressure measurements require a very specialized and costly test environment due to the fact that the fluid-borne and structure-borne vibrations of the pump can be transmitted to the whole hydraulic circuit. Moreover, this propagation gives rise to background noise levels which could greatly affect the measurement of the airborne noise emitted by the pump.
This paper reports the results of an experimental investigation intended to identify which of the three standardised methods for determining the sound power using sound intensity (series ISO 9614 part 1 to part 3) is the most suitable when it is applied to determine the airborne noise generated by an hydraulic fluid power pump. The comparison among these three test codes should confirm or reject the expectation reported in the Introduction to ISO 16902, saying that for these sources just an \"engineering\" or \"survey\" grade of accuracy can be achieved.
Measurements were carried out on a gear pump mounted on a specific hydraulic circuit under controlled conditions of installation and operation. The measurement surface had a parallelepiped shape and three different arrays of measurement positions and three different scanning paths were selected for discrete points (9614-1) and scanning procedures (9614-2 and 3), respectively. (literal)
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