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Type of Document Master's Thesis Author Henkels, Julia Ann URN etd-12222007-212636 Title Abrasion Resistance Screening of Fibers for Woven Materials Using Atomic Force Microscopy Degree Master of Science in Mechanical Engineering Department Aerospace and Mechanical Engineering Advisory Committee
Advisor Name Title Dr. Steven Schmid Committee Chair Dr. Diane Wagner Committee Member Dr. Glen Niebur Committee Member Keywords
- fibers
- woven materials
- atomic force microscope
- atomic force microscopy
- polymers
- flow strength
Date of Defense 2007-12-20 Availability unrestricted Abstract Woven materials are of interest in orthopedic implant design to serve as a replacement for articular cartilage and similar tissue. With every loading, fibers in woven materials encounter micro-scale sliding and potential abrasion. The goal of this project was to characterize the relative abrasive wear of several polymer fibers of different diameters that are suitable for in vivo use, including polyetheretherkeytone (PEEK), polypropolyene, and polyethylene fibers. The fibers were mounted in a slow curing epoxy and hand polished through several grades down to 0.05 µm alumina. Plowing tests were performed with the atomic force microscope (AFM) and analyzed using Hector and Schmid’s upper bound model. There was a general trend in the flow strength data that showed a higher flow strength along the longitudinal fiber axis, as would be expected due to the spinning manufacturing process.Files
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