Influence of fiber orientation on abrasive wear of unidirectionally reinforced carbon fiber–polyetherimide composites
A composite with continuous carbon fibers (CF) (80% by vol.) and high performance thermoplastic polyetherimide (PEI) matrix was developed and evaluated for various mechanical properties as a function of fiber orientation angle (0°, 30°, 45°, 60° and 90°). It was observed that Young's modulus, P...
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Published in | Tribology international Vol. 43; no. 5; pp. 959 - 964 |
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Main Authors | , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Kidlington
Elsevier Ltd
01.05.2010
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | A composite with continuous carbon fibers (CF) (80% by vol.) and high performance thermoplastic polyetherimide (PEI) matrix was developed and evaluated for various mechanical properties as a function of fiber orientation angle (0°, 30°, 45°, 60° and 90°). It was observed that Young's modulus, Poisson's ratio, toughness and % strain decreased with the increase of fiber orientation angle with respect to loading direction. In-plane shear modulus was highest for fibers with 45°. Overall, unidirectional (UD) CF reinforcement enhanced all strength properties of PEI significantly. Composites with fibers in 0° (parallel to loading direction) proved best in almost all the properties. Tribological evaluation in abrasive wear mode under different loads and fiber orientations indicated that coefficient of friction (
μ) and specific wear rate (
K
0) decreased with load, in general. Comparatively low specific wear rate (
K
0), (in the order of 0.7
1×10
−9
m
3/Nm) was observed for 0° fiber orientation, while fibers in 90° showed almost three times higher wear rate. Overall fiber reinforcement in 0° orientations proved beneficial from both strength and tribological performance point of view. SEM proved useful to correlate wear rate with surface topography. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0301-679X 1879-2464 |
DOI: | 10.1016/j.triboint.2009.12.064 |