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Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites

Title: Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites.
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Name(s): Kim, Myungsoo, author
Okoli, Okenwa I., professor directing dissertation
Shanbhag, Sachin, outside committee member
Park, Young-Bin, committee member
Liang, Zhiyong, committee member
Jack, David, committee member
Department of Industrial and Manufacturing Engineering, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2009
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Carbon nanotubes (CNTs) have excellent mechanical, electrical, and thermal properties making them outstanding reinforcements in polymer matrix composites. In this research, the effect of CNT-integration in polymer matrices (two-phase) and fiber-reinforced composites (three-phase) was studied theoretically and experimentally. This work sought to enhance the mechanical properties of composites by the improving dispersion of CNTs in polymers. This was achieved by optimizing the CNT/polymer composite manufacturing process. Generally, higher sonication intensity and longer sonication time improved the mechanical properties of CNT/polymer composites through improved CNT dispersion. Simulations for CNT/polymer composites (nanocomposites) and CNT/fiber/polymer composites (multiscale composites) were successfully carried out using a new method that combines nanocomposites micromechanics and woven fiber micromechanics. With this new method, the mechanical properties, including the Young's modulus, Poisson's ratio, and shear modulus, of nanocomposites and multiscale composites were predicted in terms of CNT loading in a polymer. The relationships between the mechanical properties of the composites and aspect ratios of the CNTs were studied and, as the third part of the simulation, the mechanical properties of multiscale composites that have no CNTs in the fiber strands were compared with those of multiscale composites that have CNTs in the fiber strands. In order to compare the predicted mechanical properties obtained by the simulations, nano and multiscale composites were manufactured and characterized. Good dispersion of the CNTs and strong bonding between the CNTs and polymer matrix and fibers and matrix are necessary to improve the mechanical properties of nanocomposites and multiscale composites.
Identifier: FSU_migr_etd-3069 (IID)
Submitted Note: A Dissertation submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Degree Awarded: Summer Semester, 2009.
Date of Defense: April 3, 2009.
Keywords: Carbon Nanotubes, Design of Experiments (DOE), Nanocomposites, Multiscale Composites, Mechanical Modeling
Bibliography Note: Includes bibliographical references.
Advisory Committee: Okenwa I. Okoli, Professor Directing Dissertation; Sachin Shanbhag, Outside Committee Member; Young-Bin Park, Committee Member; Zhiyong Liang, Committee Member; David Jack, Committee Member.
Subject(s): Manufacturing processes
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069
Owner Institution: FSU

Choose the citation style.
Kim, M. (2009). Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069