Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/13230
Title: The effect of strain rate on the compression behavior of additively manufactured short carbon fiber-reinforced polyamide composites with different layer heights, infill patterns, and built angles
Authors: Zeybek, Mehmet Kaan
Güden, Mustafa
Taşdemirci, Alper
01. Izmir Institute of Technology
01. Izmir Institute of Technology
01. Izmir Institute of Technology
Keywords: Compressive stress
Fused deposition modelling
Infill pattern
Short carbon fibers
Issue Date: 2023
Publisher: Springer
Abstract: Previous studies on the fused deposition modelling (FDM) processed short carbon fiber/Polyamide 6 (PA6) matrix composites and neat PA6 have mostly concentrated on the quasi-static mechanical properties. Present study focused on the strain rate-dependent deformation behavior of a short carbon fiber-reinforced PA6 (Onyx) and neat PA6, produced in different layer heights, infill patterns and built angles. As compared with PA6, Onyx showed a higher compression stress at all strain rates investigated. A layer height of 0.2 mm in PA6 specimens promoted a better bonding between [0/90°] infill layers; hence, a higher flow stress than 0.2 mm layer height specimens, while 0.2 mm layer height induced a higher porosity in Onyx specimens, leading to a lower flow stress. The porosities in Onyx [0/90°] infill specimens were due to the constraining effect of 0/90° fiber layers. Changing infill pattern from a [0/90°] to a concentric one decreased porosity at the same layer height and hence increased the compressive flow stress. The highest compressive strength was found in the specimens with the loading axis 90 and 0° to [0/90°] infill plane. The lowest strength was, however, determined in the specimens with the loading axis 30 and 60o to [0/90°] infill plane in quasi-static loading. However, the specimens with the loading axis of 60, 45, 30 and 0° exhibited a brittle behavior in high strain rate loading (1500 s−1). The specimens with the loading axis of 45° had the lowest fracture stress and strain in the high strain rate loading. This signified the importance of loading angle at high strain rates. Finally, the rate sensitivities of PA6 and Onyx specimens were shown to be similar, showing a matrix dominated deformation. However, the strain rate jump tests indicated a slightly higher rate sensitivity of Onyx specimens at quasi-static strain rates (10−3-10−1 s−1).
Description: Article; Early Access
URI: https://doi.org/10.1007/s11665-023-07918-1
https://hdl.handle.net/11147/13230
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
s11665-023-07918-1.pdf
  Until 2025-07-01
Article4.27 MBAdobe PDFView/Open    Request a copy
Show full item record



CORE Recommender

SCOPUSTM   
Citations

1
checked on Feb 16, 2024

WEB OF SCIENCETM
Citations

1
checked on Feb 10, 2024

Page view(s)

90
checked on Feb 19, 2024

Download(s)

2
checked on Feb 19, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.