Analysis of behavior of composite material during loading tests

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F20%3A00338274" target="_blank" >RIV/68407700:21220/20:00338274 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21610/20:00338274

Result on the web

<a href="https://doi.org/10.1088/1757-899X/726/1/012007" target="_blank" >https://doi.org/10.1088/1757-899X/726/1/012007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/726/1/012007" target="_blank" >10.1088/1757-899X/726/1/012007</a>

Result language

angličtina

Original language name

Analysis of behavior of composite material during loading tests

Original language description

Composites are widely used as a material suitable for construction applications, but the operating conditions can lead to reduction of materials properties, damage initiation and collapse of the structure, so it is necessary to monitor condition of components and thus prevent its catastrophic failure. The unidirectional glass fiber reinforced polymer matrix composite (GFRP) was inspected with usage of non-destructive (NDT) acoustic emission during the static loading tests. The 0° test specimens were manufactured and tested under tensile and three-point flexural load for which the custom-made apparatus was used. Failure mechanisms were inspected by detailed analysis using scanning electron microscopy (SEM) to deduce the damage sequence. Tensile stress-initiated matrix cracking which induces formation of scarps, ribbons and riverlines followed by delamination and fiber failure with formation of radials. Flexural load showed cracks in matrix, delamination and typical compression regions in form of fiber microbuckling. Based on the speed of wave propagation and linear localization, damage processes were detected in form of lateral cracking, delamination and integrity loss during the tensile and flexural tests. The data obtained from mechanical testing were correlated with selected acoustic emission parameters (counts, events, amplitude and duration). The Short-time Fourier transform (ST-FFT) and peak frequency was used for identification of failure modes. In case of tensile and flexural load the matrix cracking has lower frequencies while delamination and fiber failure have higher values.

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

S - Specificky vyzkum na vysokych skolach

Publication year

2020

Confidentiality

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

Article name in the collection

IOP Conference series: Materials Science and Engineering

ISBN

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ISSN

1757-8981

e-ISSN

1757-899X

Number of pages

9

Pages from-to

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Publisher name

IOPscience

Place of publication

Madeira

Event location

Nová Lesná

Event date

Sep 2, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000539289000007