Effect of Rockwool and Steel fiber on the Friction Performance of Brake Lining Materials

Bernard, S. Stephen; Jayakumari, L. S.

doi:10.1590/s1517-707620160003.0063

Cited by 15 publications

(4 citation statements)

References 28 publications

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“…These requirements are affected by the formulation, the selection of the constituents, and the setting of manufacturing parameters. Several studies have focused on the optimization of friction material manufacturing processes [5][6][7][8]. For example, Ertan and Yavuz [9] investigated the effects of the manufacturing parameters on the tribological behavior of friction materials in order to achieve optimal manufacturing parameters and thus improve their performances.…”

Section: Introductionmentioning

confidence: 99%

Organic Brake Friction Composite Materials: Impact of Mixing Duration on Microstructure, Properties, Tribological Behavior and Wear Resistance

et al. 2022

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The lack of knowledge on the link between the manufacturing process and performance constitutes a major issue in brake lining development. The manufacturing process of organic brake friction composite materials includes several steps (mixing, preforming, hot molding and post-curing), which define their final microstructure, properties and performances. This study focuses on the effect of mixing duration on the microstructure, properties and tribological behavior of organic friction composite materials. The adopted methodology is based on simplified formulations effective in limiting synergistic effects by reducing the number and size distribution of constituents. Two simplified materials are here developed according to the mixing duration of the constituent introduction sequence. The microstructural characteristics are studied using 2D and 3D analyses, and then correlated with the thermophysical and mechanical properties. Wear mechanisms and tribological behavior are studied in relation to the microstructure and properties of the materials. The results show the effect of mixing duration as regards particle distribution and fiber arrangement. The distribution and size of fiber entanglements contribute to the formation of carbonaceous particle clusters, which create bulk bridges improving thermal conductivity. Moreover, the arrangement of rock fibers affects density, porosity and thermo-physical properties. In addition, the mixing disrupts the cohesion of fiber bundles with the matrix, affecting compressive modulus and wear behavior. This microstructural defect also fosters abundant third-body source flow, which disturbs the tribological circuit and behavior. Porosities induced by fiber entanglements, having a large and irregular size and distribution on the frictional surface, result in low wear resistance and alter the frictional stability.

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Section: Introductionmentioning

confidence: 99%

Organic Brake Friction Composite Materials: Impact of Mixing Duration on Microstructure, Properties, Tribological Behavior and Wear Resistance

et al. 2022

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“…On 8 PF's surface we can notice the formation well leveled friction layer. It shows that the abrasive effect of the glassy phase is reduced by eliminating the sharpness of the composite [21].…”

Section: Wear Analysismentioning

confidence: 98%

Tribological and mechanical properties of biobased reinforcement in a friction composite material

Vivek¹,

Jayakumari

S³

et al. 2020

Matéria (Rio J.)

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This work presents the function of biobased ingredients (palm fiber) as reinforcement in brake pad materials. Reinforcement in brake lining improvise wear stability, wear resistance and friction optimization under a dynamic set of operating variables such as braking force, sliding speed, braking duration and braking temperature. The effect of palm fiber on physical, mechanical and tribological properties of brake pad composite is evaluated. The percentage of palm fiber is gradually increased from 2% to 12% at an interval of 2% as an alternate of rockwool fiber by varying the pressure and speed in a pin on disc tribometer. By increasing the pressure, 8% and 10% shows high friction stability at all speeds. The results show that the raise in the palm fiber quantity increases the hardness, specific gravity and heat swell and the properties, loss on ignition and porosity decreases. The SEM descriptions of the composite indicated that the smaller micro voids occurred in the sample having low palm fiber. Weight gain in the composites were also observed by exposing them in salt water, water and oil.

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“…It was found that the tribological performance deteriorated after 8 wt% due to an increase in the organic constituents in the formulation 13 . Similarly, the synergy effect of palm fiber with rock wool fiber in brake pad formulations also showed that upto 10 wt% of palm fibers, the frictional stability was good, and it deteriorated after 10 wt% 14 …”

Section: Introductionmentioning

confidence: 97%

“…13 Similarly, the synergy effect of palm fiber with rock wool fiber in brake pad formulations also showed that upto 10 wt% of palm fibers, the frictional stability was good, and it deteriorated after 10 wt%. 14 In a study conducted by Naresh Kumar et al, 15 the thermal, physical, mechanical, and tribological properties of brake pads incorporating different percentages of Sabai grass fiber were examined and compared with standard Kevlar-based brake pads. The research revealed that brake pads containing 5 wt% Sabai grass fiber exhibited favorable friction levels and lower wear rates compared to other composites.…”

Section: Introductionmentioning

confidence: 99%

Sustainable characterization of brake pads using raw/silane‐treated Mimosa pudica fibers for automobile applications

Raghunathan,

Gnanasekaran,

Ayyappan

et al. 2024

Polymer Composites

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The demand for bio‐fiber composites has increased globally due to the environmental impact of non‐sustainable materials. In this context, Natural fibers are becoming increasingly popular in various applications due to their sustainability. This study explores silane‐treated Mimosa pudica (MP) fibers obtained from the relevant plant that were treated with silane and utilized to strengthen composites used in brake friction development. Five different formulations for brake friction composites were developed using silane‐treated and untreated MP fibers combined with inert filler synthetic barites and maintaining other ingredients in constant amounts. The brake pads were then evaluated for physical, chemical, mechanical, and thermal properties, and their tribological performance was assessed using the chase test, following SAE J661‐2021. The test results revealed that the silane‐treated fibers had a higher cellulose content of 57.2%, while the untreated fibers had a cellulose content of 48.7%. The Rockwell hardness‐K scale value was higher for brake pads made with 5 wt% silane‐treated fibers, with a value of 95. The wear loss was lower for brake pads made with 10 wt% silane‐treated MP fibers‐based brake pads than other composites. Scanning Electron Microscope analyzed the worn surface features of the brake pads used in the Chase test.Highlights Mimosa pudica fibers were utilized as reinforcement in brake pads Silane‐treated Mimosa pudica fibers showed higher cellulose content and improved thermal stability Silane‐treated Mimosa pudica fibers‐based brake pads showed optimal μ and lower wear rate.

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Effect of Rockwool and Steel fiber on the Friction Performance of Brake Lining Materials

Cited by 15 publications

References 28 publications

Organic Brake Friction Composite Materials: Impact of Mixing Duration on Microstructure, Properties, Tribological Behavior and Wear Resistance

Organic Brake Friction Composite Materials: Impact of Mixing Duration on Microstructure, Properties, Tribological Behavior and Wear Resistance

Tribological and mechanical properties of biobased reinforcement in a friction composite material

Sustainable characterization of brake pads using raw/silane‐treated Mimosa pudica fibers for automobile applications

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