<mods:mods xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-4.xsd"><mods:titleInfo><mods:title>Deep indentation contact experiments with nonlinear model fitting</mods:title></mods:titleInfo><mods:typeOfResource>text</mods:typeOfResource><mods:name type="personal"><mods:namePart>Yang, Jianzhe</mods:namePart><mods:role><mods:roleTerm type="text">creator</mods:roleTerm></mods:role></mods:name><mods:name type="personal"><mods:namePart>Haneesh, Kesari</mods:namePart><mods:role><mods:roleTerm type="text">Advisor</mods:roleTerm></mods:role></mods:name><mods:name type="corporate"><mods:namePart>Brown University. Engineering: Mechanics of Solids</mods:namePart><mods:role><mods:roleTerm type="text">sponsor</mods:roleTerm></mods:role></mods:name><mods:originInfo><mods:copyrightDate>2017</mods:copyrightDate></mods:originInfo><mods:physicalDescription><mods:extent>, None p.</mods:extent><mods:digitalOrigin>born digital</mods:digitalOrigin></mods:physicalDescription><mods:note type="thesis">Thesis (Sc. M.)--Brown University, 2017</mods:note><mods:genre authority="aat">theses</mods:genre><mods:abstract>Over the past decades, the mechanical behavior of biological material has had&#13;
a profound effect on research into human tissues and the development of medical&#13;
devices. Studies from macrostructures to nanostructures of biological materials have&#13;
been investigated. Experimental tools have been used to explore these mechanical&#13;
properties. Soft material is one of the most widely found biological materials in&#13;
nature. Understanding the mechanical behavior of soft material is important in order&#13;
to develop cell mechanics and clinical devices. This thesis investigates the mechanical&#13;
behavior of polydimethylsiloxane (PDMS) under large deformation by conducting&#13;
deep indentation contact experiments. We use a long thin indenter to indent into three&#13;
different PDMS samples to explore their strain behaviors under large deformation.&#13;
We find the relationship between the loading force and the deformation of PDMS. A&#13;
hysteresis is also found between the loading process and the unloading process. Three&#13;
potential factors of viscoelasticity, friction and surface roughness are discussed.</mods:abstract><mods:subject><mods:topic>contact experiments</mods:topic></mods:subject><mods:subject><mods:topic>nonlinear model fitting</mods:topic></mods:subject><mods:language><mods:languageTerm authority="iso639-2b">English</mods:languageTerm></mods:language><mods:recordInfo><mods:recordContentSource authority="marcorg">RPB</mods:recordContentSource><mods:recordCreationDate encoding="iso8601">20170616</mods:recordCreationDate></mods:recordInfo><mods:identifier type="doi">10.7301/Z0MK6BCV</mods:identifier><mods:accessCondition type="rights statement" xlink:href="http://rightsstatements.org/vocab/InC/1.0/">In Copyright</mods:accessCondition><mods:accessCondition type="restriction on access">Collection is open for research.</mods:accessCondition></mods:mods>