Fracture and fatigue behavior of carbon/epoxy laminates modified by nanofibers

Journal article (2020)

Authors

Reza Mohammadi Amirkabir University of Technology
Mehdi Ahmadi Najafabadi Amirkabir University of Technology
Hamed Saghafi Tafresh University, Amirkabir University of Technology
D. Zarouchas Structural Integrity & Composites - Aerospace Engineering
Research Group
Structural Integrity & Composites (Aerospace Engineering) (TU Delft)
Composite laminates Fatigue loading Mode-I fracture toughness Nylon 66 nanofibers
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Published Date

2020-10

Language

English

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Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Structural Integrity & Composites

Abstract

This research focused on fracture and fatigue response of carbon/epoxy laminates modified with electrospun nylon 66 nanofibers. For this purpose, AS4/8552 composite laminates interleaved by nanofibrous mat were considered under mode-I quasi-static and fatigue loading conditions. According to test outcomes, the fracture toughness increased about 133% under quasi-static tests. On the other hand, the plotted fatigue curves showed that the crack growth rate significantly decreased in modified samples and the threshold energy release rate enhanced about 128%. Finally, scanning electron microscopy (SEM) was also conducted to investigate the damage mechanisms.