It is impossible to determine the amount of money that is spent every replacing products damaged from wear, but it is safe to assume that it is in the millions of dollars. With metallic materials, liquid lubricants are often used to prevent wear from materials rubbing against one another. However, with polymeric materials, liquid lubricants cause swelling, creating an increase in friction and therefore increasing the wear. Therefore, a different method or methods to mitigate wear in polymers should be developed. For better understanding of the phenomenon of wear, scratch resistance testing can be used. For this project, classic molecular dynamics is used to study the mechanics of nanometer scale scratching on amorphous polymeric materials. As a first approach, a model was created for polyethylene, considering intramolecular and intermolecular interactions as well as mass and volume of the CH2 monomers in a polymer chain. The obtained results include analysis of penetration depth and recovery percentage related to indenter force and size.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc149608 |
| Date | 08 1900 |
| Creators | Hilbig, Travis |
| Contributors | Brostow, Witold, 1934-, Simoes, Ricardo, Du, Jincheng, Bouanani, Mohamed El, Collins, Peter |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | Text |
| Rights | Public, Hilbig, Travis, Copyright, Copyright is held by the author, unless otherwise noted. All rights Reserved. |
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