Experimental characterization of the dominant noise radiating mechanism of a rotating prop shaft
Experimental characterization of the dominant noise radiating mechanism of a rotating prop shaft
- New search for: Lacin, S.
- New search for: Blough, J.R.
- New search for: Karsen, C. Van
- New search for: Lacin, S.
- New search for: Blough, J.R.
- New search for: Karsen, C. Van
Recently many automobile manufacturers have switched from using steel propeller shafts to aluminum propeller shafts. The new aluminum shafts have a larger diameter and therefore more surface area to radiate sound. This paper investigates the dominant noise radiating mechanism for a particular prop shaft where the source of excitation is the rear axle pinion gear mesh. The natural frequencies and mode shapes of the prop shaft are identified with a static modal analysis test. The noise radiation pattern of the prop shaft is identified through the use of nearfield acoustic holography (NAH) and a ring of nearfield microphones that were located at several different locations along the prop shaft. Both of these tests were performed with the prop shaft spinning on an axle dynamometer.
Document information
Experimental characterization of the dominant noise radiating mechanism of a rotating prop shaft
Experimentelle Kennzeichnung des dominanten Schallabstrahlungsmechanismus einer rotierenden Gelenkwelle
2000
7 Seiten, 18 Bilder, 6 Tabellen, 4 Quellen
Conference paper
English