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Determining fracture toughness by orthogonal cutting of polyethylene and wood-polyethylene composites

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dc.contributor.advisor Nairn, John
dc.creator Semrick, Kalin
dc.date.accessioned 2012-06-27T20:07:47Z
dc.date.available 2012-06-27T20:07:47Z
dc.date.copyright 2012-06-14
dc.date.issued 2012-06-14
dc.identifier.uri http://hdl.handle.net/1957/30261
dc.description Graduation date: 2013 en_US
dc.description.abstract The purpose of this thesis was to evaluate orthogonal cutting as a method to determine the fracture toughness of low and high density polyethylene and wood plastic composites. A test fixture was developed to capture normal and tangential cutting forces at variable depth and rake angle. A tool interface method (TIM) is proposed to separate forces on both sides of the tool from the energy needed to propagate the crack. Also investigated were shear plane models of chip failure, which seek to measure toughness by modeling internal stresses in the chip. These results are compared to current methods of determining essential work of fracture (EWF). It is found that cutting requires much less energy than current methods of EWF. Further work is suggested to better parameterize failure. en_US
dc.language.iso en_US en_US
dc.subject Fracture en_US
dc.subject Polyethylene en_US
dc.subject Wood-plastic composite en_US
dc.subject cutting en_US
dc.subject.lcsh Plastic-impregnated wood -- Fracture en_US
dc.subject.lcsh Plastic-impregnated wood -- Testing en_US
dc.subject.lcsh Polyethylene -- Fracture en_US
dc.subject.lcsh Polyethylene -- Testing en_US
dc.subject.lcsh Fracture mechanics en_US
dc.title Determining fracture toughness by orthogonal cutting of polyethylene and wood-polyethylene composites en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Wood Science en_US
dc.degree.level Master's en_US
dc.degree.discipline Wood Science en_US
dc.degree.grantor Oregon State University en_US
dc.contributor.committeemember Kruzic, Jamie
dc.contributor.committeemember Sinha, Arijit
dc.contributor.committeemember Mullet, Kathy
dc.description.peerreview no en_us

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