4.7 Article

Effect of annealing treatment on mechanical properties of 3D-Printed composites

Journal

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 23, Issue -, Pages 2101-2115

Publisher

ELSEVIER
DOI: 10.1016/j.jmrt.2023.01.097

Keywords

Additive manufacturing; Fused filament fabrication (FFF); Thermal annealing; Mechanical properties

Ask authors/readers for more resources

This study aims to analyse the annealing effect on the mechanical properties of PETG, carbon fibre reinforced PETG (PETG + CF) and Kevlar fibre reinforced PETG (PETG + KF). The final dimensions vary with temperature and exposure time regardless of the material, showing that the addition of fibres had no significant influence. The presence of fibres affects the radius of curvature, and this parameter is highly dependent on the type of fibre. Higher temperatures and exposure times generally lead to higher hardness values, achieving improvements of about 20% over untreated material. Bending properties increase with exposure time and temperature for composites, while in the case of neat PETG they increase with temperature and decrease with exposure time. After the annealing treatment, significant improvements were observed in bending strength, bending modulus, impact strength, stress relaxation, and creep behavior for all materials.
This study aims to analyse the annealing effect on the mechanical properties of PETG, carbon fibre reinforced PETG (PETG + CF) and Kevlar fibre reinforced PETG (PETG + KF). Regardless of the material, the final dimensions vary with temperature and exposure time, showing that the addition of fibres had no significant influence. On the other hand, the presence of fibres affects the radius of curvature, but this parameter shows to be very dependent on the type of fibre. In terms of hardness, higher temperatures and exposure times generally lead to higher values, achieving improvements of about 20% over untreated material. Regarding the bending properties, while they increase with exposure time and temperature for composites, in the case of neat PETG they increase with temperature and decrease with exposure time. Compared to untreated specimens, the maximum bending strength observed after the annealing treatment was 10.2%, 31.8% and 11.1% for PETG, PETG + CF and PETG + KF, respectively, while the maximum bending modulus was 17.6%, 61.1% and 62.6% higher, respectively. Benefits were also observed in terms of impact strength, stress relaxation and creep behaviour of all materials. For example, after annealing, lower stress relaxation and creep displacement values were observed.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available