Institute of Fundamental Technological Research
Polish Academy of Sciences


Tomas Kuncius

Recent publications
1.  Orłowska-Gałęzia A. M., Graczykowski C., Pawłowski P. K., Ruta R., Rimasauskas M., Kuncius T., Majewska K., Mieloszyk M., Characterization of thermal expansion in additively manufactured continuous carbon fibre reinforced polymer composites using fibre Bragg grating sensors, MEASUREMENT, ISSN: 0263-2241, DOI: 10.1016/j.measurement.2024.114147, Vol.227, pp.114147-1-114147-15, 2024

This study investigates thermal strains in fibre reinforced polymeric samples manufactured using a modified Fused Deposition Modelling (FDM) method. The investigated material was a composition of polylactic acid (PLA) resin and continuous carbon fibres. Each test sample was equipped with two Bragg grating (FBG) sensors, one embedded inside and the other bonded to the surface. Both sensors monitored temperature-induced deformations
during the conditioning of the specimens in a thermal chamber. Multiscale, analytical and finite element method based models were implemented to quantify the temperature deformations. Research has revealed that in investigated samples, bending occurs due to thermal loading. This can result in an inaccurate estimation of the coefficient of thermal expansion when relying on surface deformation measurements. A proposed solution involves the use of one FBG sensor embedded inside the specimen or two FBG sensors placed symmetrically, capable of measuring axial thermal deformation and averaging the effects associated
with bending.

Continuous Carbon Fibre Reinforced Polymer Composites, Fibre Bragg gratings, Thermal expansion , Additive manufacturing, Multiscale modelling

Orłowska-Gałęzia A. M. - IPPT PAN
Graczykowski C. - IPPT PAN
Pawłowski P. K. - IPPT PAN
Ruta R. - other affiliation
Rimasauskas M. - other affiliation
Kuncius T. - other affiliation
Majewska K. - other affiliation
Mieloszyk M. - other affiliation

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