Scratch Modeling of Polymeric Materials with Molecular Dynamics

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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 ... continued below

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Hilbig, Travis August 2012.

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This thesis is part of the collection entitled: UNT Theses and Dissertations and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 304 times . More information about this thesis can be viewed below.

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  • Hilbig, Travis

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Description

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.

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UNT Theses and Dissertations

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  • August 2012

Added to The UNT Digital Library

  • March 4, 2013, 2:02 p.m.

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  • Nov. 16, 2016, 3:44 p.m.

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Citations, Rights, Re-Use

Hilbig, Travis. Scratch Modeling of Polymeric Materials with Molecular Dynamics, thesis, August 2012; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc149608/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .