An Experimental Investigation of Spall Fracture in Neat Epoxy and an Epoxy/Carbon Nanotube Composite

It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file.

Click here to download the PDF file.

Supplemental Files: 

Creator: 

Pepper, Jonathan

Date: 

2017

Abstract: 

The spall strength of a material can be used to parameterize its ability to resist tensile failure under high-strain-rate loading. Dynamic failure in an assortment of representative materials was studied. A focus was placed on characterizing the mechanical properties of a polymer-matrix composite. Load frame testing was carried out to measure mechanical properties at quasi-static strain rates, while plate impact experiments were conducted to examine material response under dynamic loading conditions. Successful identification of the spall strengths and fracture toughnesses of aluminum 6061-T6 and polymethylmethacrylate (PMMA) validated the methods used in this investigation. An effect of the curing agent on the spall strength of an epoxy was identified. Nanotubes were found to have a detrimental effect on the dynamic mechanical properties of the resulting nanocomposite. Fracture surfaces of recovered nanocomposite fragments were imaged using a scanning electron microscope to identify failure mechanisms and propose a failure process.

Subject: 

Materials Science
Condensed Matter

Language: 

English

Publisher: 

Carleton University

Thesis Degree Name: 

Master of Applied Science: 
M.App.Sc.

Thesis Degree Level: 

Master's

Thesis Degree Discipline: 

Engineering, Aerospace

Parent Collection: 

Theses and Dissertations

Items in CURVE are protected by copyright, with all rights reserved, unless otherwise indicated. They are made available with permission from the author(s).