Material properties improvement of laminated composites using nanoscale reinforcements

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Authors
Sritharan, Ramanan
Advisors
Askari, Davood
Issue Date
2022-04-29
Type
Abstract
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Research Projects
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Citation
Sritharan, R. 2022. Material properties improvement of laminated composites using nanoscale reinforcements-- In Proceedings: 18th Annual Symposium on Graduate Research and Scholarly Projects. Wichita, KS: Wichita State University
Abstract

Fiber-reinforced composite materials are widely used in many industries. They are predominantly used in the aerospace industry to make aircraft structural components and renewable energy industry to make wind turbine blades. Composite materials have several advantages compared to conventional materials which give composite materials the upper hand. Composites are light in weight, and have high specific stiffness, high strength, and high damage tolerance. Since composites are fabricated layer by layer, the poor adhesion of fabrics can lead to delamination, and it is one of the main disadvantages of using composite materials. Delamination is primarily due to poor interlaminar strength and lack of reinforcement between the fabric layers. One of the effective methods to solve this problem is the use of nanoscaled reinforcement between the fabric layers and within the fiber filaments. There are different types of nanomaterials available, of which carbon nanotube has been extensively studied as a nanoscaled reinforcement in laminated composites. Carbon nanotubes (CNTs) are a rolled-over form of graphene. It has very high strength and a high aspect ratio. Straight and helical CNTs are two geometrical forms of CNTs that have higher aspect ratios, as compared to other carbon nanostructures. From our previous study, it has been found that helical carbon nanotubes (HCNTs) perform better than straight carbon nanotubes. In this research, HCNTs were used to improve the material properties of the laminated composite per ASTM standards. Three laminates were made using plain weave glass fabric, one without HCNTs and two laminates with two different weight percentages of HCNTs. The fabrication of test samples and mechanical testing processes were performed per ASTM standards. The test results showed significant improvement in the material properties of the laminate composites reinforced with HCNTs.

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Description
2nd place award winner in the poster presentations at the 18th Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Rhatigan Student Center, Wichita State University, April 29, 2022
Research completed in the Department of Mechanical Engineering, College of Engineering
Publisher
Wichita State University
Journal
Book Title
Series
GRASP
v. 18
PubMed ID
DOI
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EISSN