Login | Register

Procedure for making flat thermoplastic composite plates by Automated Fiber Placement and their mechanical properties

Title:

Procedure for making flat thermoplastic composite plates by Automated Fiber Placement and their mechanical properties

Hoang, Minh Duc (2015) Procedure for making flat thermoplastic composite plates by Automated Fiber Placement and their mechanical properties. Masters thesis, Concordia University.

[img]
Preview
Text (application/pdf)
Duc_MASc_F2015.pdf - Accepted Version
6MB

Abstract

Automated Fiber Placement (AFP) is one of the new manufacturing processes for composites that has many advantages such as fast rate of material deposition, repeatability, and reduction of material waste. Thermoplastic composites compared with thermoset composites show a lot of advantages such as higher impact resistance, recyclability etc. and they are very suitable for primary structures of an aircraft. However, manufacturing of thermoplastic composites requires more efforts because of the very high viscosity of thermoplastic resin.
This study proposed a manufacturing procedure to make flat thermoplastic laminates with different layup sequences by using a heated mandrel during layup process with AFP. It is shown that using a mandrel heated to a temperature higher than glass transition can make flat laminates. Processing parameters which consist of hot gas temperature, compaction force, layup speed, mandrel temperature, were found for different laminates. Moreover, repass after material deposition helps to reduce void content inside the laminates.
The obtained flat laminates show the crystallized thermoplastic resin. The high degree of crystallinity is recommended to have good mechanical properties. Tensile, compression and in-plane shear tests were carried out to determine mechanical properties of the laminates made by AFP. Results are compared with those made by autoclave. Test results show that laminates made by AFP have higher tensile modulus, higher compression modulus, similar tensile strength, and almost equal of shear modulus. However, a reduction in compression strength is observed.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Hoang, Minh Duc
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical Engineering
Date:April 2015
Thesis Supervisor(s):Hoa, Van Suong
ID Code:979994
Deposited By: MINH DUC HOANG
Deposited On:13 Jul 2015 13:51
Last Modified:18 Jan 2018 17:50
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Downloads per month over past year

Back to top Back to top