Influence of High-Temperature Annealing Parameters on Wear and Friction Mechanisms in Polypropylene Carbon Fiber Composites Sri Ranganathar Institute of Engineering and Technology, Dep

Format:

Book

Conference/Event

Author/Creator:

Nallasivam, J.D., author.

Contributor:

Kandavalli, Sumanth Ratna

Pradab, R.

Sundararaj, S.

Conference Name:

Automotive Technical Papers (2025-01-01 : Warrendale, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

Fused deposition modeling (FDM) is a rapidly growing additive manufacturing method employed for printing fiber-reinforced polymer composites. Nonetheless, the performance of printed parts is often constrained by inherent defects. This study investigates how the varying annealing parameter affects the tribological properties of FDM-produced polypropylene carbon fiber composites. The composite pin specimens were created in a standard size of 35 mm height and 12 mm diameter, based on the specifications of the tribometer pin holder. The impact of high-temperature annealing process parameters are explored, specifically annealing temperature and duration, while maintaining a fixed cooling rate. Two set of printed samples were taken for post-annealing at temperature of 85°C for 60 and 90 min, respectively. The tribological properties were evaluated using a dry pin-on-disc setup and examined both pre- (as-built) and post-annealing at temperature of 85°C for 60 and 90 min printed samples. Tribological tests were conducted under varying normal loads (5, 10, 15, and 20 N) and sliding velocities (1 and 3 m/s), following the ASTM G99 standard test procedure. Significantly notable enhancements in wear and friction properties were consistently observed across all tribometer test conditions when the composites underwent annealing at 85°C for 60 min, surpassing the performance of other samples. These particular samples, subjected to the 85°C/60-min annealing process, exhibited elevated hardness, diminished wear rates, and reduced coefficients of friction (COF). A detailed examination using a scanning electron microscope revealed that the wear mechanism on the surface of the tribometer-tested samples exhibited milder wear when carbon fiber was added, followed by annealing at 85°C for 60 min, compared to the 90-min annealing. These promising results suggest that the proposed composites have potential applications in industries such as prosthetics, aerospace, and automobiles

Notes:

Vendor supplied data

Publisher Number:

2025-01-5000

Access Restriction:

Restricted for use by site license