Functional Characteristic Evaluation of 3-Dimensional Knitted Spacer Fabrics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F16%3A00003889" target="_blank" >RIV/46747885:24410/16:00003889 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Functional Characteristic Evaluation of 3-Dimensional Knitted Spacer Fabrics

Original language description

Nowadays, the utilization of 3-Dimensional (3D) porous textile materials by the civil and mechanical engineers for improved acoustical environment and shear behavior during composite forming has widened the research scope. Since spacer textile fabrics have superior functional characteristics such as acoustical, thermal and shear characteristics compared to conventional woven/knitted structures or nonwovens due to their wonderful 3D sandwich pattern and porous nature. Hence this research paper presents an experimental evaluation on the sound absorption behavior and in-plane properties of 3D knitted spacer fabrics. The Sound absorption coefficient (SAC) was measured using two microphone impedance tube. Moreover, tortuosity of the spacer fabrics was carefully calculated analytically andcompared with experimental results. This study deeply discusses the influence of material parameters and characteristics on acoustical properties of 3D spacer knitted fabrics. The results show that the fabric surface property, porosity, flow resistivity and tortuosity have significant effects on the sound absorbability. Also, a fixture was designed to analyze the intra-ply shear properties of these fabrics. The nonlinear behavior of shear force versus shear angle and the deformation mechanism were analyzed. The curves for shear force versus shear angle and position of buckling for intra-ply sheartest are recorded. Load–displacement curves of intra-ply shear tests are also analyzed. In addition to this, a program was developed in MATLAB using Hough transform to analyze the shear angle in the real-time image taken during displacement of specimen at various positions. These findings are important requirement for the further improvements in designing of picture frame fixture and to study the in-plane shear properties of 3D fabrics.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JJ - Other materials

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Article name in the collection

21st Conference Strutex

ISBN

978-80-7494-269-3

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

93-100

Publisher name

Technical University of Liberec

Place of publication

Liberec

Event location

Liberec

Event date

Jan 1, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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