Functional characteristic evaluation of 3-dimensional knitted spacer fabrics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F17%3A00003760" target="_blank" >RIV/46747885:24410/17:00003760 - isvavai.cz</a>

Výsledek na webu

<a href="http://strutex.ft.tul.cz/2016/Home/home.html" target="_blank" >http://strutex.ft.tul.cz/2016/Home/home.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Functional characteristic evaluation of 3-dimensional knitted spacer fabrics

Popis výsledku v původním jazyce

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 and compared 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 shear test 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.

Název v anglickém jazyce

Functional characteristic evaluation of 3-dimensional knitted spacer fabrics

Popis výsledku anglicky

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 and compared 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 shear test 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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Vlakna a Textil

ISBN

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ISSN

1335-0617

e-ISSN

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Počet stran výsledku

7

Strana od-do

39-45

Název nakladatele

FOART s.r.o.

Místo vydání

Bratislava

Místo konání akce

Liberec

Datum konání akce

1. 1. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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