Trends in acoustic properties of iron particle seeded auxetic polyurethane foam
- 1 February 2004
- journal article
- research article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
- Vol. 218 (2), 241-244
- https://doi.org/10.1243/095440604322887099
Abstract
The sound absorption characteristic of a clean, open-cell configuration, typical polyurethane flexible foam is shown against that of an auxetic foam made from it, and this same foam after it has been seeded with a magnetorheological fluid (then dried), having 2–5 μm carbonyl iron particles and subjected to zero, weak and concentrated magnetic fields in an acoustic impedance tube facility. The resultant foam indicates the capability of shifting the peak acoustic absorption coefficient within a given frequency bandwidth when constant intensity magnetic fields are applied.Keywords
This publication has 3 references indexed in Scilit:
- Dynamic crushing of auxetic open-cell polyurethane foamProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2002
- Fabrication methods for auxetic foamsJournal of Materials Science, 1997
- Examination of acoustic behavior of negative poisson's ratio materialsApplied Acoustics, 1994