Strain and Stress Fields During Scratch Tests on Amorphous Polymers: Influence of the Local Friction

Pelletier, Hervé; Gauthier, Christian; Schirrer, R.

doi:10.1007/s11249-008-9368-4

Cited by 18 publications

(7 citation statements)

References 20 publications

(47 reference statements)

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“…There have been numerous experimental efforts to uncover the fundamental nature of polymer scratch behavior. One aspect of scratch behavior that can be immediately appreciated is the analysis of the resulting deformation and linking it to such basic properties as hardness, viscoelasticity, influence of stress state, friction, and stick‐slip [3–24]. Some efforts have even been carried out using FEM [25, 26].…”

Section: Introductionmentioning

confidence: 99%

Effects of acrylonitrile content and molecular weight on the scratch behavior of styrene‐acrylonitrile random copolymers

Browning

Sue

Minkwitz

et al. 2011

Polymer Engineering & Sci

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Fundamental understanding of the scratch behavior of styrene-acrylonitrile (SAN) random copolymers with variation in acrylonitrile (AN) content and molecular weight (MW) is pursued using the methodology outlined in ASTM D7027-05/ISO 19252:08. Two sets of SAN model systems are employed: One that varies the AN content with similar MW and another that varies the MW at the same AN content. Key scratch damage mechanisms (scratch groove formation, periodic micro-cracking, and plowing) are identified and correlated with the compressive and tensile properties of the SAN systems. Scratch visibility is analyzed through the use of a commercial software package. A fundamental structure-property relationship of SAN scratch behavior is proposed by the fact that increasing the AN content or the MW can have a positive effect on increasing the scratch resistance of SAN as it improves its tensile strength and ductility. The implication of material properties and their effect on polymer scratch behavior is discussed.

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Section: Introductionmentioning

confidence: 99%

Effects of acrylonitrile content and molecular weight on the scratch behavior of styrene‐acrylonitrile random copolymers

Browning

Sue

Minkwitz

et al. 2011

Polymer Engineering & Sci

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“…2-D elastic and plastic material behaviors have been employed to study the coating scratch behaviors of various material systems [7][8][9][10][11]. Finite element (FE) modeling has been carried out to study the scratch behavior of bulk polymers [11][12][13][14][15]. Molecular dynamics simulation has been conducted to understand polymer tribological behavior [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…The effect of scratch testing rate on scratch performance has been studied [18,19]. FEM modeling has been adopted to study the material and surface parameters effect on polymer scratch [14,15]. Surface roughness and friction coefficient have been shown to impose significant effect on polymer scratch behavior [14,15,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…FEM modeling has been adopted to study the material and surface parameters effect on polymer scratch [14,15]. Surface roughness and friction coefficient have been shown to impose significant effect on polymer scratch behavior [14,15,[20][21][22]. The above findings provide important insights in aiding fundamental understanding of the observed polymer scratch phenomena.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Modeling of Scratch Behavior of Polymeric Coatings on Hard and Soft Substrates

et al. 2009

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An ASTM standard scratch test is utilized to study the scratch behavior of polymeric coatings on soft and hard substrates. Depending on the different combination of polymeric coatings and substrates utilized, various damage modes can take place, which include coating delamination, transverse cracking, and buckling failure. A soft coating on a hard substrate will give rise to an entirely different scratch damage pattern from those of a hard coating on a soft substrate. The stress and strain responses of scratch on polymeric coating are analyzed using three-dimensional finite element (FE) simulation. The analysis provides mechanistic insights for the observed polymer coating deformation mechanisms and failure modes. Usefulness of the ASTM scratch method and FE modeling to evaluate polymer coating scratch behavior is discussed.

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“…In addition to the geometry of scratches, the simulations can provide more information for the study of material behaviors during scratching, [8][9][10][11][12]17 influence of roughness, 13,[26][27][28][29] interaction between scratch tip and rough surface, [30][31][32][33] and process of material deformation and damage. 8,9,[34][35][36][37] These topics will not be discussed here, as the present study focuses on the geometry of the scratches and the calculation of the visual features of the scratched surfaces.…”

Section: Structures Of Simulated Scratchesmentioning

confidence: 99%

An attempt to simulate structure and realistic images of scratches on rough polymeric surfaces

Gao

Wang

Coffey

et al. 2020

Journal of Polymer Science

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Numerical simulation of scratching has been shown to exhibit many advantages in material development and surface design and can provide detailed information associated with the scratch structure. However, the visual appearance of simulated scratches in real-world scenarios has seldom been studied. This study simulates the structure and visual appearance of scratches on rough polymer surfaces by combining the finite element method (FEM) with computer imaging (CI) techniques. FEM modeling of scratching incorporates a wide range of microgeometries in rough surfaces to ensure that the resulting scratch surfaces contain all features, regardless of whether they are visible to the human eye. Computer graphics produce realistic images of numeric scratch surfaces in real-world lighting conditions. This method demonstrates the advantages of easily simulating scratches on rough surfaces and assessing both abrasion strength and visual scratch resistance. Scratch tests on commercial polymer surfaces at different scratch forces demonstrate that the method can satisfactorily predict the structures and scales of scratches. The simulated images correlate closely with camera-acquired photographs in terms of the visual appearance of scratch surfaces, effect of lighting conditions, and dependence of the visual width of scratches on the scratching force, material, pigment, and additive in the material.

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Strain and Stress Fields During Scratch Tests on Amorphous Polymers: Influence of the Local Friction

Cited by 18 publications

References 20 publications

Effects of acrylonitrile content and molecular weight on the scratch behavior of styrene‐acrylonitrile random copolymers

Effects of acrylonitrile content and molecular weight on the scratch behavior of styrene‐acrylonitrile random copolymers

Mechanical Modeling of Scratch Behavior of Polymeric Coatings on Hard and Soft Substrates

An attempt to simulate structure and realistic images of scratches on rough polymeric surfaces

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