Acoustic Characteristics of Composite Structures Used in Train

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F20%3A63525304" target="_blank" >RIV/70883521:28110/20:63525304 - isvavai.cz</a>

Alternative codes found

RIV/70883521:28120/20:63525304

Result on the web

<a href="http://journalmt.com/artkey/mft-202003-0002_acoustic-characteristics-of-composite-structures-used-in-train.php" target="_blank" >http://journalmt.com/artkey/mft-202003-0002_acoustic-characteristics-of-composite-structures-used-in-train.php</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21062/mft.2020.043" target="_blank" >10.21062/mft.2020.043</a>

Result language

angličtina

Original language name

Acoustic Characteristics of Composite Structures Used in Train

Original language description

This paper presents a study focused on sandwich structures as well-known train construction materials that are composed of two thin and rigid face sheets and a thick, low-density core material. For trains, the wheel-rail interface is the main source of noise, and the wheel-rail roughness, especially in the presence of rail corrugation, is the main excitation source transmitted to the interior and area for passengers. The purpose of the study is to optimize the acoustic properties of a composite sandwich panel used for train floors and walls. Sound absorption coefficient (α), noise reduction coefficient (NRC) and Transmission loss (TL) evaluations have been implemented and experimentally validated on a typical sandwich material used for trains. The opportunity to use a different material can be concretely calculated and modified for critical frequency ranges. Sound transmission loss levels of the structural components as the floor and wall of the train body, which are required of producers and customers, were tested in acoustic laboratory and acoustic devices according to ASTM and ISO standards. It is demonstrated that, for honeycomb and cork sandwich panels, acoustic response is not sensitive to cell size. For foam core sandwich panels, it is observed that different compositions with thin layers are effective in the frequency range of 50 – 1000 Hz.

Czech name

—

Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Manufacturing Technology

ISSN

1213-2489

e-ISSN

—

Volume of the periodical

20

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

335-341

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85090985016