Title page for ETD etd-09182008-063050


Type of Document Master's Thesis
Author Kuppuswamy, Anand
URN etd-09182008-063050
Title Theoretical and experimental analysis of strain concentration around a broken fiber using the macro-composite technique
Degree Master of Science
Department Engineering Mechanics
Advisory Committee
Advisor Name Title
Giurgiutiu, Victor Committee Co-Chair
Kriz, Ronald D. Committee Co-Chair
Reifsnider, Kenneth L. Committee Member
Keywords
  • finite elements
  • micromechanics
  • macro-composite
  • experiments
Date of Defense 1996-12-30
Availability restricted
Abstract

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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