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Acoustical characterization and para...

Homsi, Emile N.

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Acoustical characterization and parameter optimization of polymeric noise control materials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Acoustical characterization and parameter optimization of polymeric noise control materials./
Author:	Homsi, Emile N.
Description:	131 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5739.
Contained By:	Dissertation Abstracts International64-11B.
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3111294

Acoustical characterization and parameter optimization of polymeric noise control materials.
Homsi, Emile N.

Acoustical characterization and parameter optimization of polymeric noise control materials. - 131 p.

Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5739.

Thesis (Ph.D.)--New Jersey Institute of Technology, 2003.

The sound transmission loss (STL) characteristics of polymer-based materials are considered. Analytical models that predict, characterize and optimize the STL of polymeric materials, with respect to physical parameters that affect performance, are developed for single layer panel configuration and adapted for layered panel construction with homogenous core. An optimum set of material parameters is selected and translated into practical applications for validation.Subjects--Topical Terms:

783786
Engineering, Mechanical.

Acoustical characterization and parameter optimization of polymeric noise control materials.
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100 1 $a Homsi, Emile N. $3 1951985
245 1 0 $a Acoustical characterization and parameter optimization of polymeric noise control materials.
300 $a 131 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5739.
500 $a Adviser: Nadine Aubry.
502 $a Thesis (Ph.D.)--New Jersey Institute of Technology, 2003.
520 $a The sound transmission loss (STL) characteristics of polymer-based materials are considered. Analytical models that predict, characterize and optimize the STL of polymeric materials, with respect to physical parameters that affect performance, are developed for single layer panel configuration and adapted for layered panel construction with homogenous core. An optimum set of material parameters is selected and translated into practical applications for validation.
520 $a Sound attenuating thermoplastic materials designed to be used as barrier systems in the automotive and consumer industries have certain acoustical characteristics that vary in function of the stiffness and density of the selected material. The validity and applicability of existing theory is explored, and since STL is influenced by factors such as the surface mass density of the panel's material, a method is modified to improve STL performance and optimize load-bearing attributes. An experimentally derived function is applied to the model for better correlation. In-phase and out-of-phase motion of top and bottom layers are considered. It was found that the layered construction of the co-injection type would exhibit fused planes at the interface and move in-phase. The model for the single layer case is adapted to the layered case where it would behave as a single panel.
520 $a Primary physical parameters that affect STL are identified and manipulated. Theoretical analysis is linked to the resin's matrix attribute. High STL material with representative characteristics is evaluated versus standard resins. It was found that high STL could be achieved by altering materials' matrix and by integrating design solution in the low frequency range.
520 $a A suggested numerical approach is described for STL evaluation of simple and complex geometries. In practice, validation on actual vehicle systems proved the adequacy of the acoustical characterization process.
590 $a School code: 0152.
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Plastics Technology. $3 1023683
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710 2 0 $a New Jersey Institute of Technology. $3 1028843
773 0 $t Dissertation Abstracts International $g 64-11B.
790 1 0 $a Aubry, Nadine, $e advisor
790 $a 0152
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3111294