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Analysis of mechanical properties and structure of samples filled with continuous glass fiber produced in composite filament fabrication technology

Marciniak Dawid, Sykutera Dariusz, Czyżewski Piotr

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2024

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Vol. 72, nr 2

art. no. e148841

EN

The purpose of the study was to evaluate selected mechanical properties and structural characteristics of samples manufactured using composite filament fabrication (CFF) technology from Onyx material, whichwas filled with continuous glass fiber. Selected mechanical properties were correlated with the density of the resulting composite to determine the specific strength of the fabricated parts. The test specimens were manufactured on a Mark Two Enterprise machine (Markforged, USA) using composite filament fabrication (CFF) technology. The material used was polyamide 6.6 with a 20% short carbon fiber content with the trade name Onyx. Continuous glass fiber was used to reinforce the fabrication. The density of the manufactured samples was determined using a hydrostatic method. Methanol was used as the liquid. By determining the density of the samples, it was possible to estimate through appropriate calculations what specific strength and specific modulus the obtained composites would have. Determination of tensile and flexural strengths was carried out in accordance with ISO 527-1:2012 and ISO 178:2003. Determination of the impact tensile strength of the samples was carried out in accordance with ISO 8256, the beams were tested using the A method. Due to the high impact tensile strength, two 1 mm notches with an angle of 45°were made on the specimens. The image of the sample structure obtained by the CFF method was recorded using a CT scanner. A thermogravimetric test (TG) of the Onyx matrix material was carried out. The samples were tested approximately 72 hours after fabrication. Filling the samples with continuous glass fiber above 50% leads to a slight increase in impact resistance. The density of the composite increased by only 16% relative to the reference samples, resulting in a 389% increase in the maximum average flexural strength. Despite significant discontinuities in the structure of the produced composite, it was possible to record an increase in tensile strength and Young’s modulus by 606% and 370%, respectively.

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Wyznaczanie właściwości wytrzymałościowych przędz przy użyciu zestawu aparaturowego USTER ® TENSORAPID 4

Lewandowski S., Józkowicz I.

Przegląd Włókienniczy - Włókno, Odzież, Skóra

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2017

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nr 1

17--23

EN

The article assesses the technical characteristics and strength parameters of yarns of staple fibers, designated through a tensile testing machine USTER TENSORAPID 4 of USTER TECHNOLOGIES A.G. It was found that the tensile testing machine installed in this software enables comprehensive analysis of quality yarns and other products in terms of strength, both in numerical and graphical. USTER TENSORAPID 4 is also compatible with quality nomograms USTER STATISTICS, as well as a USTER QUALIPROFILE tool for the direct evaluation of the quality of yarns.

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Wybrane właściwości kompozytów metalowych wzmacnianych cząsteczkami ceramicznym

Mazurkiewicz A.

Logistyka

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2009

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nr 6

PL

Kompozyty metalowe na osnowie stopów aluminium, stanowią coraz częściej stosowaną grupę materiałów konstrukcyjnych. Wynika to z możliwości pracy w podwyższonych temperaturach, korzystnej wartości wytrzymałości właściwej jak też odpornością na zużycie ścierne umożliwiając pracę w warunkach tarcia technicznie suchego np. w parze ciernej tarcza hamulcowa-okładzina cierna. Określono ważniejsze parametry opisujące właściwości materiału, zwracając uwagę na problemy sterowania tymi czynnikami.

EN

Metal composite on the warp of the alloys of aluminum, makes up the applied group of constructional materials more and more often. This results from the possibility of working in raised temperatures, profitable value of proper endurance as also the resistance on the abrasive waste make possible working in conditions of the technically dry friction e.g. brake shield or friction facing in the abrasive steam. More important parameters describing proprieties of the material were defined, returning the attention to the problems of steering these factors.