Tribological behavior of thermoplastic polyurethane elastomers

Elleuch, Riadh; Elleuch, Khaled; Salah, Boudour; Zahouani, H.

doi:10.1016/j.matdes.2005.11.004

Cited by 57 publications

(27 citation statements)

References 11 publications

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“…5, where it can be seen that the model provides a realistic prediction of the load-deflection behaviour. Both the experiment and model display a J-shaped load deflection response, which is a characteristic of indenting soft materials [2,3,8,15,21,22,27]. However, the experiment is slightly less stiff than the model, which is most likely due to some slipping of the substrate in the grips (note:…”

Section: Fe Model Validationmentioning

confidence: 98%

“…In general, indentation studies have only been interested in the response of the indenter and substrate before cutting initiates [1][2][3][4][5][6][7][8][9], while cutting studies [10][11][12][13][14][15][16][17][18][19][20][21][22][23] have generally examined the long term response of the cutting process, where material separation or cutting reaches a steady state.…”

Section: Introductionmentioning

confidence: 99%

“…Studies examining elastomeric substrates have, in general, modelled them using strain energy density functions, such as the Mooney [2], Ogden [4], Yeoh [4] or neo-Hookean [5,9] models. In order to apply Hertzian contact theory to model the indentation process, one study [8] modelled the elastomeric substrate as linear elastic with a very low Young's modulus and a Poisson's ratio close to 0.5. A characteristic common to a number of indentation studies is the J-shaped load-deflection curve observed as the level of indentation increases [2,3,8,22].…”

Section: Introductionmentioning

confidence: 99%

“…In order to apply Hertzian contact theory to model the indentation process, one study [8] modelled the elastomeric substrate as linear elastic with a very low Young's modulus and a Poisson's ratio close to 0.5. A characteristic common to a number of indentation studies is the J-shaped load-deflection curve observed as the level of indentation increases [2,3,8,22]. This non-linearity is due to the increase in the contact area between the indenter and the substrate as the indentation progresses.…”

Section: Introductionmentioning

confidence: 99%

“…This non-linearity is due to the increase in the contact area between the indenter and the substrate as the indentation progresses. Some studies have examined friction between the indenter and the substrate [4,7,8] while others have ignored it [5,6]. A major difficulty with modelling friction is experimentally determining the friction coefficient at the contact interface.…”

Section: Introductionmentioning

confidence: 99%

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On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry

McCarthy

Annaidh

Gilchrist

2010

Engineering Fracture Mechanics

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In Part I of this paper a new metric, titled the "Blade Sharpness Index" or "BSI", for quantifying the sharpness of a straight edge blade when cutting soft solids was derived from first principles and verified experimentally by carrying out indentation type cutting tests with different blades types cutting different target or substrate materials. In this Part II companion paper, a finite element model is constructed to examine the effect of different blade variables including tip radius, wedge angle and blade profile on the BSI developed in Part I. The finite element model is constructed using ABAQUS implicit and experiments are performed to characterise the non-linear material behaviour observed in the elastomeric substrate. The model is validated against the experiments performed in Part I and a suitable failure criterion is determined by carrying out experiments on blades with different tip radii. The paper finds that a simple maximum stress criterion is a good indicator for predicting the onset of cutting.The validated model is then used to examine blade geometry. It is shown that finite element analysis is an important tool in helping to understand the mechanics of indentation.Furthermore, the study finds that all the blade geometric variables have an influence on the

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Section: Fe Model Validationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry

McCarthy

Annaidh

Gilchrist

2010

Engineering Fracture Mechanics

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Wear Behavior of the Natural Fiber‐Reinforced Thermoplastic Composites

Sundaramoorthy,

Parthasarathy,

Subramanian

et al. 2023

Tribological Properties, Performance and Applications of Biocomposites

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Evolution of the Coefficient of Friction with Surface Wear for Advanced Surface Textured Composites

Anwer

Bagheri

Fernie

et al. 2017

Adv Materials Inter

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In this study, textured composite surface with protruding fibers is developed, which exhibits extremely high coefficient of friction on ice. A novel composite material with improved wear resistibility is aimed to determine with the target to maintain its slip‐resistance properties over extended use. Particularly, two thermoplastic elastomers are compared, namely, thermoplastic polyurethanes (TPU) and Styrene–Butadiene–Styrene (SBS), reinforced with five types of fibers with varying stiffnesses and ductility, including alumina, basalt, glass, carbon, and poly(p‐phenylene‐2,6‐benzobisoxazole)) (PBO). The surface science of the composite is analyzed by using Fourier tranorm infrared spectroscopy to assess the intensity of existing interfacial bonding at fiber/matrix interface and scanning electron microscopy imaging for visual characterization. The results show that TPU composites have significantly higher abrasion resistance and slip resistance on ice as compared to SBS composites with the maximum abrasive resistance index (347.5 ± 29.5, p < 0.0001) and coefficient of friction on ice (0.375 ± 0.031, p < 0.0001) for PBO/TPU composite. Similarly, Fourier tranorm infrared spectroscopy spectrum demonstrates stronger existing bands in TPU compared to SBS composites indicative of better fiber wetting in TPU composites. The current PBO–TPU composite can be a potential candidate for various antislip applications as it has improved wear‐resistance (22%) and slip‐resistance (57%) properties, with respect to pure TPU.

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Tribological behavior of thermoplastic polyurethane elastomers

Cited by 57 publications

References 11 publications

On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry

On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry

Wear Behavior of the Natural Fiber‐Reinforced Thermoplastic Composites

Evolution of the Coefficient of Friction with Surface Wear for Advanced Surface Textured Composites

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