Exploration of Zylon fibers with various aspect ratios to enhance the performance of eco-friendly brake-pads

Kalel, Navnath; Bhatt, Bhaskaranand; Darpe, Ashish K.; Bijwe, Jayashree

doi:10.1016/j.triboint.2021.107385

Cited by 11 publications

(9 citation statements)

References 22 publications

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“…The control of contact plateaus could be the key to reduced friction-induced vibrations . In the earlier tribological study, similar mechanisms (more contact plateaus) were observed without aramid/Zylon fiber-based pads …”

Section: Resultssupporting

confidence: 52%

“…In addition, the wear mechanism is already explained in our earlier tribological article, and this article was a part of the noise–vibration study. The reference pad showed more unstable secondary plateaus and more wear debris on the surface.…”

Section: Resultsmentioning

confidence: 93%

“…The reference brake pad comprises barite (BaSO 4 ) having a higher density ( = 4.4 g/cc) instead of lighter ingredients ( = 1.44–1.54 g/cc) such as aramid and Zylon fibers, thus decreasing the density of brake pads. The inclusion of fibers leads to higher porosity and, hence, compressibility compared to particulate ingredients, which further leads to enhanced damping . Overall, the improvement in the squeal propensity is 21.2 and 19.2% for aramid fiber- and Zylon fiber-based pads relative to the reference pad, respectively.…”

Section: Resultsmentioning

confidence: 96%

“… 11 In the earlier tribological study, similar mechanisms (more contact plateaus) were observed without aramid/Zylon fiber-based pads. 43 …”

Section: Resultsmentioning

confidence: 99%

“…Table enlists the physical and mechanical properties of the developed pads . The density was the highest for the reference pad due to the high amount of higher density space filler (i.e., barite).…”

Section: Resultsmentioning

confidence: 99%

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Suppression of Brake Noise and Vibration Using Aramid and Zylon Fibers: Experimental and Numerical Study

et al. 2022

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Aramid pulp/fiber is the most vital ingredient of brake friction material (FM) formulation. It is perpetually added to achieve quality brake pads/shoes and improve the overall friction and wear performance. Additionally, novel Zylon fibers have a superior property to aramid fibers. However, no studies give insights on their influence on brake noise and vibration (NV) performance. In the current work, a series of six different types of eco-friendly brake pads was developed. The first five contain aramid pulp, aramid short fibers, and Zylon fibers of different sizes (1, 3, and 6 mm) as the theme ingredients (3 wt %) by keeping the parent composition identical. Additionally, one more pad was developed that contains no aramid/Zylon fibers (i.e., reference pad). The pads were characterized for physical and mechanical properties. The damping and natural frequencies of pads were measured experimentally and numerically. All brake pads were evaluated for detailed NV performance by following the SAE J 2521 test schedule. In addition, numerical simulation was performed to validate the experimental brake squeal results. Results revealed that aramid/Zylon fiber-based pads improved the porosity, damping, and compressibility. Overall, brake noise and vibrations were improved for aramid/Zylon fiber-based pads by 1.2–1.5 dBA and 20–25%, respectively, compared to the reference pad. The complex eigenvalue analysis (CEA) proved that squeal was mainly influenced by the damping and density of the pad materials. Thus, aramid/Zylon fiber-based pads can effectively suppress the instability of the brake system and reduce the brake squeal propensity.

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Section: Resultssupporting

confidence: 52%

Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 96%

“… 11 In the earlier tribological study, similar mechanisms (more contact plateaus) were observed without aramid/Zylon fiber-based pads. 43 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Suppression of Brake Noise and Vibration Using Aramid and Zylon Fibers: Experimental and Numerical Study

et al. 2022

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Exploring the tribological impact of micaceous additives in copper‐free automobile brake friction composites

Sathyamoorthy,

Raghunathan,

Rangappa

et al. 2024

Vinyl Additive Technology

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This study investigates the tribological impact of incorporating micaceous additives in copper‐free brake friction composites for automotive applications. Four brake pad formulations were created, each containing different amounts of muscovite and phlogopite, ranging from 0% to 10% by weight. A brake pad comparison was conducted by replacing mica with synthetic barites. The physical, thermal, mechanical, and chemical properties of the fabricated brake friction composite were examined. Tribological features were evaluated through inertia brake dynamometer testing following the JASO‐C‐406 schedule. Scanning electron microscope (SEM) analysis delved into contact plateau formations and back transfer patches on the brake pad's surfaces. Notably, phlogopite‐based pads exhibited enhanced thermal stability and efficient heat dissipation, contributing to sustained tribological performance. Overall, the comprehensive evaluation using the multiple objective optimization by ratio analysis (MOORA) method positioned phlogopite‐based brake pads as the optimal choice for optimized braking performances.Highlights Exploration of micaceous additives as an ingredient in brake friction composite. Phlogopite‐based brake pads showed better fade and recovery performance. Phlogopite‐based brake pads exhibited low pad wear and rotor wear. MOORA optimization positioned phlogopite‐based brake pads as the optimal choice.

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Friction and wear response of automobile brake pad composites containing volcanic tuff

Yavuz,

Bayrakçeken

2023

J Aust Ceram Soc

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Exploration of Zylon fibers with various aspect ratios to enhance the performance of eco-friendly brake-pads

Cited by 11 publications

References 22 publications

Suppression of Brake Noise and Vibration Using Aramid and Zylon Fibers: Experimental and Numerical Study

Suppression of Brake Noise and Vibration Using Aramid and Zylon Fibers: Experimental and Numerical Study

Exploring the tribological impact of micaceous additives in copper‐free automobile brake friction composites

Friction and wear response of automobile brake pad composites containing volcanic tuff

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