Effect of tribological parameters on scratch behaviour of unidirectional E-glass fibre reinforced polyester composite

Mzali, Slah; Mezlini, Salah; Zidi, Mondher

doi:10.1179/1751584x13y.0000000048

Cited by 9 publications

(5 citation statements)

References 22 publications

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“…Hence, the predicted apparent friction coefficient is more sensitive to the conical indenter geometry. The same result was already proven experimentally by Mzali et al [11]. When low attack angles were used, a large contact surface was observed, and the indenter rubs like a spherical pin.…”

Section: Sensitivity Of Friction To Penetration and Attack Anglesupporting

confidence: 84%

“…Increasing the attack angle up to 60°p rovokes the damage mode transition from plastic ploughing to the longitudinal matrix fracture, the debonding of the fiber/matrix interface and the fiber damage. Similar damage modes were experimentally shown when scratching composite under similar conditions by Mzali et al [11]. Figure 6 shows the composite material removal mechanisms for the two extreme depths of penetration 5.10 À6 and 100.10 À6 m and an angle attack of 60°.…”

Section: Predicted Elementary Wear Mechanisms Vs Attack Anglesupporting

confidence: 75%

“…SST was firstly carried out using a testing device as described by Mzali et al [11]. In this investigation, the velocity and scratch length are both fixed at 210.10 À3 m/min and 20.10 À3 m, respectively.…”

Section: Scratch Testmentioning

confidence: 99%

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A micromechanical scratch model to investigate wear mechanisms in UD-GFRP composites

Mzali

Elwasli

Mkaddem

et al. 2018

Mechanics & Industry

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This study suggests a micromechanical approach to scrutinize the glass fiber reinforced polyester (GFRP) composite tribological behavior. A single indenter scratch test (SST) using spherical tip conical indenter was adopted. The 3D finite element (FE) model was developed into ABAQUS/Explicit commercial code. Both material behavior and damage of polyester matrix and glass fiber was modeled using the Johnson Cook behavior law. Nevertheless, the fiber/matrix interface behavior is described using the cohesive zone approach via the cohesive elements. The elementary wear mechanisms owing to the SST were appraised at different attack angle and normal load by the mean of scanning electron microscope (SEM). In this work, the material removal map was built to emphasize the correlation between the tribological parameters, particularly the attack angle and the normal load, and the material removal process. The numerical results emphasized the significant effects of the attack angle and the penetration depth on the transition of the wear mechanisms from ploughing to composite damage. The experimental wear mechanisms and the predicted elementary wear mechanisms seem to be in a good agreement.

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Section: Sensitivity Of Friction To Penetration and Attack Anglesupporting

confidence: 84%

Section: Predicted Elementary Wear Mechanisms Vs Attack Anglesupporting

confidence: 75%

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A micromechanical scratch model to investigate wear mechanisms in UD-GFRP composites

Mzali

Elwasli

Mkaddem

et al. 2018

Mechanics & Industry

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“…recording of data outputs [20]. All test series were conducted at room temperature in dry environment and repeated three times under same conditions.…”

Section: Single-indenter Scratch Test (Sst)mentioning

confidence: 99%

A 3D multi-scratch test model for characterizing material removal regimes in 5083-Al alloy

et al. 2015

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This study addresses the sensitivity of material removal regimes in 5083-Aluminum alloy to interactions mechanisms generated during Multi-Scratch Test (MST). A testing device using three conical indenters was firstly developed. Four attack angles and four normal loads ranging, respectively, in 10-60° and 10-25 N, were considered for conducting the experimental trials. The scratch velocity was kept constant to 210 mm min -1 and the maximum scratch distance to 25 mm. The model, developed upon ABAQUS/Explicit, uses JohnsonCook approach for describing both material behavior and damage evolution. Single Scratch Test (SST) and MST reveal same wear regimes, namely, (i) "ploughing", (ii) "transition", and (iii) "cutting" whereas a significant difference was observed in the material removal maps.While ploughing domain neatly decreases to the detriment of transition domain when passing from SST to MST, cutting domains still remain quite comparable. The indenter attack angle is depicted as the most dominant factor in apparent friction coefficient. The three dominating regimes were successfully predicted, using the FE model, in close correlation with tribological parameters. The model was found very useful to highlight the significant role of the separation distance on controlling material flow and damage within the grooves' junction.

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“…1). The description of the scratch device was already detailed by Mzali et al (Mzali et al 2013). This device is composed of a planning system, a sliding table, a motor and a piezoelectric transducer.…”

Section: Tests and Experimental Conditionsmentioning

confidence: 99%

Influence of Tribological Parameters on Single and Multi-indenter Scratch Behavior of Aluminum Alloy

Elwasli¹,

Mzali²,

Mkaddem

et al. 2015

Lecture Notes in Mechanical Engineering

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Abstract. The aim of the present paper is to study aluminum alloy behavior against single and multi-indenter scratch tests. An experimental device was designed. Scratch test, using a steel conical indenter, was carried out at a constant sliding velocity of 210 mm/min. First of all, the influence of tribological parameters on apparent friction coefficient was investigated. Four attack angles of 10, 30, 45 and 60° are selected. The normal load was varied from 10 to 25N by increment of 5N. Moreover, the study of the wear mechanisms by microscopic observation has been conducted. It has shown that tribological parameters have an essential influence on the apparent friction coefficient and wear mechanism. Then correlation between tribological parameters and wear mechanisms has been highlighted. This correlation allowed elaborating a map wear for both single and multi-indenter scratch tests. Finally, comparison between single and multi-indenter scratch test has been performed in order to understand the effect of interaction between scratches.

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Effect of tribological parameters on scratch behaviour of unidirectional E-glass fibre reinforced polyester composite

Cited by 9 publications

References 22 publications

A micromechanical scratch model to investigate wear mechanisms in UD-GFRP composites

A micromechanical scratch model to investigate wear mechanisms in UD-GFRP composites

A 3D multi-scratch test model for characterizing material removal regimes in 5083-Al alloy

Influence of Tribological Parameters on Single and Multi-indenter Scratch Behavior of Aluminum Alloy

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