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UBC Theses and Dissertations
UBC Theses and Dissertations
Penetration of composite laminates by conical indenters and projectiles Sanders, Timothy A.
Abstract
Impact resistance of composite materials is a primary concern where human lives are at risk. To design against impact the mechanisms by which these composites defeat projectiles becomes important to understand. The main focus of this thesis has been understanding the initiation and progression of damage in both carbon fibre reinforced polymer (CFRP) and glass fibre reinforced polymer (GFRP) composites. Static penetration tests were performed on CFRP laminates while both instrumented ballistic and static penetration tests were performed on GFRP laminates. The projectiles used for this study were cylindro-conical and the damage mechanisms were identified through detailed micro-graphs. Detailed ballistic force-displacement curves were obtained for GFRP laminates using a measurement system developed during the course of this thesis. Using these ballistic forcedisplacement curves it was then possible to compare the static and ballistic response of the GFRP laminates. Good agreement was found and as far as the author is aware, it is also the first time that such a detailed comparison has been made. The combination of damage progression and force-displacement curves provides the necessary input data for the analytical and numerical models currently under development at UBC.
Item Metadata
Title |
Penetration of composite laminates by conical indenters and projectiles
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1997
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Description |
Impact resistance of composite materials is a primary concern where human lives are at risk. To
design against impact the mechanisms by which these composites defeat projectiles becomes
important to understand. The main focus of this thesis has been understanding the initiation and
progression of damage in both carbon fibre reinforced polymer (CFRP) and glass fibre reinforced
polymer (GFRP) composites. Static penetration tests were performed on CFRP laminates while
both instrumented ballistic and static penetration tests were performed on GFRP laminates. The
projectiles used for this study were cylindro-conical and the damage mechanisms were identified
through detailed micro-graphs.
Detailed ballistic force-displacement curves were obtained for GFRP laminates using a
measurement system developed during the course of this thesis. Using these ballistic forcedisplacement
curves it was then possible to compare the static and ballistic response of the GFRP
laminates. Good agreement was found and as far as the author is aware, it is also the first time
that such a detailed comparison has been made. The combination of damage progression and
force-displacement curves provides the necessary input data for the analytical and numerical
models currently under development at UBC.
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Extent |
13150113 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-03-24
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0050290
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1997-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.