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On Plowing Frictional Behavior during Scratch Testing: A Comparison between Experimental and Theoretical/Numerical Results
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-6232-8819
2019 (English)In: Crystals, ISSN 2073-4352, Vol. 9, no 1, article id 33Article in journal (Refereed) Published
Abstract [en]

Scratch testing is a contact mechanics based nondestructive testing method that, if correctly evaluated, can give a lot of information about the material and tribological behavior of a material. In contrast to the situation with another contact-based method, indentation testing, wear characteristics can also be investigated, for example. In order to get results of practical importance from a scratch test, it is necessary to have evaluation formulae available. Indeed, such formulae exist for scratch testing but can be substantially influenced by frictional effects. For this reason, closed-form analytical relations have been suggested for the purpose of accounting for such effects during scratching and in particular the plowing frictional effect. As a major benefit, these relations can also be of assistance during material characterization through scratch testing. However, the proposed existing relations are based solely on theoretical/numerical analyses and, remembering that the scratch test of course is an experimental approach, verification by experiments is a necessity. Such a task is performed in the present study and it is shown that, based on standard contact global properties, the relations are accurate for most polymeric materials but could also be used for some metallic ones.

Place, publisher, year, edition, pages
MDPI , 2019. Vol. 9, no 1, article id 33
Keywords [en]
scratch testing, frictional behavior, plowing friction, mechanical analysis, polymeric materials
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-245955DOI: 10.3390/cryst9010033ISI: 000458578100033OAI: oai:DiVA.org:kth-245955DiVA, id: diva2:1295965
Funder
Swedish Research Council, 621-2005-5803
Note

QC 20190313

Available from: 2019-03-13 Created: 2019-03-13 Last updated: 2019-03-13Bibliographically approved

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Larsson, Per-Lennart

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