ACOUSTIC AND THERMAL PROPERTIES OF POLYMERIC AND BUILDING MATERIALS | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 120, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 50-57 PDF (276.06 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2008.39738 | ||
| Authors | ||
| FOJTU D.1; LAPCIK L. Jr.2 | ||
| 1Graduate student, Inst. of Physics and Material Engineering. Faculty of Technology, Tomas Bata University in Zlin, Zlin, Czech Republic. | ||
| 2Professor, Inst. of Physics and Material Engineering. Faculty of Technology, Tomas Bata University in Zlin, Zlin, Czech Republic. | ||
| Abstract | ||
| ABSTRACT Discordant sound annoys, awakens, angers, distracts, frustrates and creates stresses that result in physiological and psychological problems. It is invisible, yet its effects are clearly evident, and it pervades every facet of life. Synthetic polymers and building materials play an important role in construction of buildings mainly as a surface furnishing components. That is why in this paper we present results of our experiments focused on characterization of the basic acoustic material performance parameters, e.g. frequency dependence of the sound absorption coefficient of the articles prepared from expanded poly(styrene), poly(propylene), poly(vinyl chloride), mineral wool and plasterboard. Paper was focused on determination of the acoustic properties (in the frequency range 16 – 6400 Hz) of selected synthetic polymer materials such as expanded poly(styrene), poly(propylene), poly(vinyl chloride), mineral wool and plasterboard. Values of sound absorption coefficient for frequency range were measured. Second part of article forms measurements of thermal properties with non-stationary conditions, e.g. thermal conductivity evaluated from dependence of temperature and time by mathematical model with using Gauss-Newton method. Obtained results allow optimization of the wall structure construction for household and building industry applications. It’s possible to prepare and produce new materials, optionally combinations of existing materials, to improvement damping and vibrating properties. | ||
| Keywords | ||
| acoustics; sound absorption coefficient; frequency dependence; interior materials; thermal conductivity; non-stationary heat conduction | ||
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