Note
College of Engineering and Computer Science
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
2008
EDTF Date Created
2008
Description
Sandwich composites provide excellent structural integrity for a variety of
applications. In this study pristine and functionalized 30 nrn Silicon Carbide
nanoparticles are infused into a low density polyurethane foam used for the inner core
of the sandwich structure. The mechanical properties are characterized using
compressive, tensile, and flexural tests. A plane-strain fracture test and a TSD (Tilted
Sandwich Debond) test characterize the fracture properties of the foam and the coreskin
interface. Thermal characterization is carried out using Dynamic Mechanical
Analysis (DMA) and Thermo-Gravimetric Analysis (TGA). FTIR spectral analysis
reveals changes in molecular bonding due to pristine and functionalized nanoparticle
infusion. The fracture resistance of the foam is improved and the delamination
strength of the sandwich construction with nanophased cores is dramatically
improved. The TSD testing indicated that the G1c value rose from 0.14 kJ/m^2 in the
neat foam to 0.56 kJ/m^2 with just 0.1 wt% of SiC nanoparticle inclusion reflecting an
enhancement of almost 300%.
applications. In this study pristine and functionalized 30 nrn Silicon Carbide
nanoparticles are infused into a low density polyurethane foam used for the inner core
of the sandwich structure. The mechanical properties are characterized using
compressive, tensile, and flexural tests. A plane-strain fracture test and a TSD (Tilted
Sandwich Debond) test characterize the fracture properties of the foam and the coreskin
interface. Thermal characterization is carried out using Dynamic Mechanical
Analysis (DMA) and Thermo-Gravimetric Analysis (TGA). FTIR spectral analysis
reveals changes in molecular bonding due to pristine and functionalized nanoparticle
infusion. The fracture resistance of the foam is improved and the delamination
strength of the sandwich construction with nanophased cores is dramatically
improved. The TSD testing indicated that the G1c value rose from 0.14 kJ/m^2 in the
neat foam to 0.56 kJ/m^2 with just 0.1 wt% of SiC nanoparticle inclusion reflecting an
enhancement of almost 300%.
Language
Type
Form
Extent
162 p.
Subject (Topical)
Identifier
FA00012558
Additional Information
College of Engineering and Computer Science
Thesis (M.S.)--Florida Atlantic University, 2008.
FAU Electronic Theses and Dissertations Collection
Date Backup
2008
Date Created Backup
2008
Date Text
2008
Date Created (EDTF)
2008
Date Issued (EDTF)
2008
Extension
FAU
IID
FA00012558
Organizations
Attributed name: Florida Atlantic University
Attributed name: College of Engineering and Computer Science
Attributed name: Department of Ocean and Mechanical Engineering
Person Preferred Name
Stewart, Justin Keith
Graduate College
Physical Description
application/pdf
162 p.
Title Plain
Nanoparticle Reinforced Core Materials for Sandwich Construction: Investigation of Mechanical and Fracture Behavior
Use and Reproduction
Copyright © is held by the author with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
http://rightsstatements.org/vocab/InC/1.0/
Origin Information
2008
2008
Florida Atlantic University
Boca Raton, Fla.
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, Fla.
Sub Location
Digital Library
Title
Nanoparticle Reinforced Core Materials for Sandwich Construction: Investigation of Mechanical and Fracture Behavior
Other Title Info
Nanoparticle Reinforced Core Materials for Sandwich Construction: Investigation of Mechanical and Fracture Behavior