Monitoring of compressive behaviour of stiffened composite panels using embedded fibre optic and strain gauge sensors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F17%3AN0000108" target="_blank" >RIV/00010669:_____/17:N0000108 - isvavai.cz</a>

Result on the web

<a href="https://www.emeraldinsight.com/doi/full/10.1108/IJSI-11-2015-0052" target="_blank" >https://www.emeraldinsight.com/doi/full/10.1108/IJSI-11-2015-0052</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/doi.org/10.1108/IJSI-11-2015-0052" target="_blank" >doi.org/10.1108/IJSI-11-2015-0052</a>

Result language

angličtina

Original language name

Monitoring of compressive behaviour of stiffened composite panels using embedded fibre optic and strain gauge sensors

Original language description

Compression is critical loading condition for composite airframes. Compression behaviour of structures with or without damages is a weak point for composite fuselage panels. This is one of the reasons for need of continuous in-service health monitoring of composite structures. The purpose of this paper is to characterize the compression panel behaviour on the base of a developed and implemented structural health monitoring (SHM) system. Design/methodology/approach - The SHM system based on fibre optic Bragg grating (FOBG) sensors and standard resistance strain gauges (SGs) was placed onto/into (embedded or bonded) three stiffened carbon fibre reinforced polymer (CFRP) fuselage panels. The FOBG sensor system was used to monitor the structural integrity of the reference, impacted, and fatigued panels under compression loading. Both barely visible impact damage and visible impact damage were created to evaluate their influence on the panel behaviour. The functionality of the SHM system was verified through mechanical testing. Findings - Experimental data showed the presence of impact damages significantly changes the bucklingmodes development and deformation behaviour of the panels. Some differences between the optical and SG sensors during buckling were observed. The buckling waves and failure development were very well indicated during loading by all sensors located on the panel surface but not by the embedded sensors. Good agreement between the data from the SGs and FOBG sensors was achieved for all sensors placed on the stringers, which did not buckle. The good reliability of FOBG sensors during the fatigue and static testing up to panel failure was verified. Originality/value - The paper gives information about different buckling behaviour of CFRP fuselage stiffened panels in compression. The paper gives detailed information about measured signals from different sensors based on their location on/in the panel structure for realistic loading scenario of composite aerostructures. The paper gives an integrated overview of sensors placement considering possibilities to predicate structure behaviour.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

International Journal of Structural Integrity

ISSN

1757-9864

e-ISSN

1757-9872

Volume of the periodical

8

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

134-150

UT code for WoS article

000397236000008

EID of the result in the Scopus database

2-s2.0-85010901150