Title page for ETD etd-09182008-063050
|Type of Document
||Theoretical and experimental analysis of strain concentration around a broken fiber using the macro-composite technique
||Master of Science
|Kriz, Ronald D.
|Reifsnider, Kenneth L.
- finite elements
|Date of Defense
It is important to understand the damage events in composite materials at the micro level,
model elastic properties, and understand phenomenological aspects of strength.
Development of an accurate representation of these phenomena at the local level is
difficult but pioneering work was done by researchers at Virginia Tech. This thesis builds
on the previous efforts at Virginia Tech where the experimental and analytical models
were improved to include high fiber volume fractions. Experimental techniques were
developed to achieve a controlled fiber fracture at a predetermined location and then
measure the over-strain experienced by the neighboring rods. A finite element model was
used to validate the micromechanical analysis. Quantitative measurements of perturbed
strain fields were measured with embedded strain gages which were then compared with
the finite element results.
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