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Related Experiment Video

Updated: Oct 20, 2025

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Published on: September 1, 2018

Forces and Specific Energy of Polyamide Grinding.

Roberto Spina^1,2,3, Bruno Cavalcante^1,2, Marco Massari⁴

¹Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, 70125 Bari, Italy.

Materials (Basel, Switzerland)

|September 10, 2021

Summary

This study on polyamide grinding reveals high cutting depths yield superior surface quality (Ra < 5 μm). Optimizing infeed speed is crucial for unfilled materials, while reinforced ones show slight degradation.

Keywords:

GFRP grinding machining material characterization polyamide precision mechanics

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Last Updated: Oct 20, 2025

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Area of Science:

Materials Science
Manufacturing Engineering
Tribology

Background:

Polyamide (PA) materials are widely used in various industries.
Understanding their processing behavior, like grinding, is essential for quality control.
Optimizing grinding parameters can enhance surface integrity and reduce manufacturing costs.

Purpose of the Study:

To investigate the grinding process of reinforced and non-reinforced polyamide materials.
To correlate energy consumption with process efficiency during grinding.
To evaluate the impact of grinding parameters on surface quality.

Main Methods:

Grinding experiments were conducted on polyamide samples using an Al2O3 grinding wheel.
In-line sensors measured temperature, forces, and power consumption.
Surface roughness (Ra) and optical images were analyzed to assess product quality.

Main Results:

High cutting depths resulted in excellent surface quality indicators (Ra < 5 μm).
Specific grinding energy stabilized around 60 J/mm³ under high energy partition.
Infeed speed significantly affects the surface quality of unfilled polyamides; reinforced polyamides showed minor quality degradation.

Conclusions:

Grinding polyamide at high cutting depths is effective for achieving high surface quality.
Careful control of infeed speed is necessary for processing unfilled polyamides.
Energy evaluation provides valuable insights into the efficiency of the polyamide grinding process.