Study of composite joint strength with carbon nanotube reinforcement
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Authors
Faulkner, Susan D.
Subjects
Advisors
Kwon, Young W.
Date of Issue
2008-09
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
Strengthening of composite joints is a topic of recent research. The benefits of using locally applied carbon nanotubes to reinforce a carbon fiber composite joint were studied. The effect of carbon nanotubes on enhancing the fracture toughness and joint interface strength was investigated by performing Mode I, Mode II, and Mixed Mode I/Mode II fracture with and without carbon nanotubes applied locally at the joint interface. Furthermore, the effects of seawater absorption on Mode II fracture were investigated. Finally, an optimization of carbon nanotube concentration was performed. During the study, the image correlation technique was used to examine the fracture mechanisms altered by the introduction of carbon nanotubes. The experimental study showed that carbon nanotubes can increase the fracture toughness of the composite interface significantly, especially for Mode II, including a physical change in the fracture mechanism.
Type
Thesis
Description
Series/Report No
NPS Outstanding Theses and Dissertations
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
xiv, 54 p. : ill. (chiefly col.) ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined
in Title 17, United States Code, Section 101. As such, it is in the
public domain, and under the provisions of Title 17, United States
Code, Section 105, is not copyrighted in the U.S.