Viscoplastic Behaviour of Nylon Reinforced by Short Carbon Fibres under Room Temperature

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F22%3A10260070" target="_blank" >RIV/61989100:27230/22:10260070 - isvavai.cz</a>
Result on the web
<a href="http://experimentalni-mechanika.cz/cs/konference/konference/2022/file/3023-1440_prispevek.html" target="_blank" >http://experimentalni-mechanika.cz/cs/konference/konference/2022/file/3023-1440_prispevek.html</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Viscoplastic Behaviour of Nylon Reinforced by Short Carbon Fibres under Room Temperature
Original language description
This paper presents mainly experimental determination of the viscoplastic properties of Onyx material used in the FDM technology of Markforged 3D printers. A dog bone specimen was used in the monotonic, creep, and relaxation tests performed under room temperature. First, the sensitivity of stress-strain behaviour to strain rate was investigated by standard tensile tests considering three-position rates realized up to 10 % of axial strain. A biaxial extensometer ensured simultaneous measurement of transverse and the longitudinal strains. For two chosen position rates, stress relaxation was followed with a fixed 10 % axial strain. Creep tests were performed on a dog bone and an hourglass specimen for comparison. The latter option required the application of the digital image correlation method. All experiments were simulated using the finite element method using the Perzyna viscoplastic model combined with the nonlinear kinematic hardening rule of Chaboche. The material model gives good predictions in monotonic loading cases with relaxation of axial stress.
Czech name
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Czech description
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Project
<a href="/en/project/EF17_049%2F0008407" target="_blank" >EF17_049/0008407: Innovative and additive manufacturing technology - new technological solutions for 3D printing of metals and composite materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Ean 2022 Proceedings of the 60th Annual Conference on Experimental Stress Analysis
ISBN
978-80-01-07400-8
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
94-100
Publisher name
České Vysoké Učení Technické v Praze
Place of publication
Praha
Event location
Praha
Event date
Jun 6, 2022
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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