@conference{
author = "Janković, Milan and Petrović, Ana and Lojpur, Vesna and Miloš, Marko and Balać, Igor",
year = "2023",
abstract = "Short carbon fibres (SCF) have been introduced in additive manufacturing (AM) of polymer-based parts designed for moderate loadings. Alongside other influential parameters for the strength and stiffness of thus obtained composite materials, scientific papers in AM field emphasize the effect of raster angle (printing direction) applied. Consequently, this study considers the idea of comparing the yield strength values experimentally evaluated for plate specimens additively manufactured from SCF-reinforced PET-G filament applying different raster angles with theoretical tensile strength vs fibre orientation curves already known from Classical Lamination Theory (CLT) for continuous fibre-reinforced composite laminas. Among many failure criteria relevant to ductile isotropic materials, maximum distortional energy criterion (von Mises) is the most widely used. Thus, von Mises criterion is usually used for predicting the onset of yielding in isotropic metals. However, for anisotropic composite materials, such as thin plates made from continuous fibre-reinforced polymers, the use of von Mises failure criterion is not applicable. Therefore, quadratic interaction criteria (e.g. Tsai-Hill) are often proposed for such materials. In this study, Tsai-Hill quadratic interaction criterion is implemented in order to predict the onset of yielding (failure) of thin composite plates made from SCF-reinforced PET-G. The off-axis tensile test is used to experimentally evaluate the failure of test samples printed with different raster angles. Linear-elastic material behaviour model was determined by modulus of elasticity and the value of yield strength for each sample set (seven sets were observed, raster angle ranging from 0° to 90° with the increment of 15°). Obtained results suggest that Tsai-Hill quadratic interaction criterion can be considered as a potential candidate for criterion capable to predict the onset of yielding (failure) of thin composite plates additively manufactured from SCF-reinforced PET-G material.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Potential of applying the quadratic failure criteria for short carbon fibre-reinforced PET-G composite material used in additive manufacturing",
pages = "84",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11653"
}
