Modal Analysis of Functionally Oriented Fabric Laminate with 10 mm Wide Carbon Strips and a 30 mm Circular Notch

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46709002%3A_____%2F25%3AN000075" target="_blank" >RIV/46709002:_____/25:N000075 - 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

Modal Analysis of Functionally Oriented Fabric Laminate with 10 mm Wide Carbon Strips and a 30 mm Circular Notch

Original language description

Functionally oriented fabric (FOF) is a technical woven textile featuring irregularly but not randomly integrated functional material strips in both warp and weft directions, designed to locally improve the mechanical properties of laminates. Low-cost material such as glass fiber is combined with high mechanical properties material such as carbon fiber. This work analyses the effect of FOF laminate layup on natural frequencies of the laminate with a notch using finite element method and experimental evaluation. The layups of analyzed laminate panels are [0/45]s and [0/30/60]s. The width of the strips is 10 mm, the span of the strips is 30 mm and there is a 30 mm circular notch in the center of the panel right among the strips. The FEA is focused on a comparison of pure glass laminate and FOF laminate with the same plies’ orientation. The results show approximately 20% increase of FOF laminate natural frequencies for [0/45]s layup and about 6 % increase in twisting modes and 13 % increase of natural frequencies in bending modes for [0/30/60]s layup. The experiments focus on verifying the actual values of frequencies and subsequent comparison with numerical values determined by simulation. Experimental results show 3-6 % deviation for [0/45]s layup and 10-16 % deviation for [0/30/60]s layup. These enhancements help to prevent resonance in standard operating frequencies of mechanisms and machines, thus extending their operational lifespan. Additionally, the strategic placement of functional material strips around structural openings provides increased stiffness without the need for extra layers, effectively reducing the laminate's overall mass. This study highlights the potential of FOF to improve the dynamic performance and lifespan of laminated composite structures used in various engineering applications.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Article name in the collection

Polymer Composites 2025

ISBN

978-80-01-07431-2

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

73-78

Publisher name

Czech Technical University in Prague

Place of publication

Praha, Česká republika

Event location

Tábor, Česká republika

Event date

Jan 1, 2025

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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