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Quasi Static and Fatigue Properties of Long Carbon Fiber Reinforced Polyamide

  • In this experimental work, the quasi static and fatigue properties of a 40 wt.% long carbon fiber reinforced partially aromatic polyamide (Grivory GCL-4H) were investigated. For this purpose, microstructural parameter variations in the form of different thicknesses and different removal directions from injectionmolded plates were evaluated. Mechanical properties decreased by increasing misalignment away from the melt flow direction. By changing the specimen thickness, no change in the general fiber distribution pattern transversal and normal to the axis of melt flow was observed. It has shown that with increasing specimen thickness the quasi static properties along the melt flow direction decreased and vice versa resulting in superior properties normal to the melt flow axis. At around 5 mm, an intersection suggests quasi-isotropic behavior. In addition, the fatigue strength of the material was significantly higher in the flow direction than normal to the flow direction. No change in fatigue life was observed while changing specimen thickness. The Basquin equation seems to describe the effect of stress amplitude on the fatigue strength of this composite. Scanning electron microscopy was used to investigate fracture surfaces of tested specimens. Results show that mechanical properties and morphological structures depend highly on fiber orientation.

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Metadaten
Author:Jan-Marc Tiemann, Javad Mola, Philipp Land, Thorsten Krumpholz, Ulrich Krupp
Title (English):Quasi Static and Fatigue Properties of Long Carbon Fiber Reinforced Polyamide
URN:urn:nbn:de:bsz:959-opus-24581
DOI:https://doi.org/10.1007/s11665-021-06182-5
ISSN:1544-1024
ISSN:1059-9495
Parent Title (English):Journal of Materials Engineering and Performance
Document Type:Article
Language:English
Year of Completion:2021
Release Date:2021/09/06
Volume:30
Faculties:Fakultät IuI
DDC classes:600 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften und Maschinenbau
Review Status:Veröffentlichte Fassung/Verlagsversion
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International