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Experimental and numerical analysis of scratching of homogeneous materials
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- Wredenberg, Fredrik (author)
- KTH,Hållfasthetslära (Avd.)
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- Larsson, Per-Lennart (thesis advisor)
- KTH,Hållfasthetslära (Avd.)
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- Hogmark, Sture, Professor (opponent)
- Teknikvetenskap, Materialvetenskap, Uppsala Univ.
- KTH Hållfasthetslära (Avd) (creator_code:org_t)
- Stockholm : KTH, 2006
- English 13 s.
- Series: Trita-HFL. Rapport/ Institutionen för hållfasthetslära, KTH, 1654-1472 ; 0417
- Licentiate thesis (other academic/artistic)
Abstract
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- Paper AAbstractA numerical strategy based on the finite element method and intended for an accurate analysis of the scratch test is presented. For simplicity, but not out of necessity,the material was described by classical Mises elastoplasticity utilising large deformation theory. Based on this strategy numerous results are presented and correlation ofscratch properties is discussed within the framework of Johnson (1970, 1985) theoryfor indentation testing. Furthermore, the existence of a representative plastic strainin the spirit of Tabor (1951) was studied. The investigation also concerns details regarding frictional effects, normal vs. tangentional scratch hardness, similarities anddifferences between indentation and scratch test characteristics as well as detailsregarding the behaviour of local field variables at scratching.key words: Scratch test, hardness, friction, finite elements, contactPaper BAbstractAn experimental and numerical study of the scratch test performed on metals andpolymers was conducted. The materials tested, being both metallic and polymeric,were related to the well known Johnson’s parameter, often used to correlate indentation experiments. The aim was to determine whether it was possible to use the numerical approach presented by Wredenberg and Larsson (2006) to describe the scratch mechanism and of course also to investigate whether or not important scratch quantities can be determined with sufficient accuracy from standard scratch experiments.Key words: Scratch test experiments, finite element analysis, contact, metals,polymers
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Keyword
- Other engineering mechanics
- Övrig teknisk mekanik
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- vet (subject category)
- lic (subject category)
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