## 1 Introduction
[17] examined the hub of the grinding wheel by combining a novel hub with steel and a CFRP substrate to perform high-speed grinding. The results revealed that the inertia reduced by 61.4% more than a conventional grinding wheel with a steel hub when the CFRP hub of the grinding wheel rotated at a high peripheral speed. Thermal expansion is also reduced by 59% due to centrifugal force. In addition, the hub that combines the steel and CFRP substrate has a different thermal expansion coefficient. Therefore, it can lead to the distortion of the grinding wheel under high-speed grinding, possibly resulting in unstable oscillation during high-speed grinding. It is essential to define the usage scenarios of the CFRP hub grinding wheel to effectively reduce the generation of negative benefits, such as heat and vibration effects. This research aims to compare the performance of the steel and the CFRP hub grinding wheels to define the latter's usage scenarios. The performance evaluation was constructed with a knock-test method for the vibration effect and the process verification under different peripheral speeds (at 20, 40, 60, 80, and 100 m/s) for surface roughness performance and grinding wheel life evaluation. In addition, this study aims to develop a carbon-fiber-reinforced thermoplastic (CFRP) hub for high-speed grinding. This new hub is expected to be lighter and less deformable under high-speed rotation and thus able to obtain a higher material removal rate, smoother workpiece surface, and longer tool life. This novel innovation can help the CFRP hub grinding wheel application in manufacturing and reduce the grinding challenge in tungsten carbide. The key highlight of this study is the comprehensive comparison between the steel and the CFRP hub grinding wheels to determine the most suitable applications for the CFRP hub. First, the study employs a knock-test method to assess the vibration impact and conducts process verification at various peripheral speeds (ranging from 20 to 100 m/s). This evaluation encompasses surface roughness performance and grinding wheel longevity, providing valuable insights into how the two hub materials perform under different conditions. Secondly, this research aims to introduce an innovative carbon-fiber-reinforcedthermoplastic (CFRP) hub designed specifically for high-speed grinding applications. This new hub is engineered to be lightweight and less prone to deformation during high-speed rotation. The expected outcomes of this innovation are threefold: a higher material removal rate, smoother workpiece surfaces, and an extended tool life. Moreover, the study carries significant implications for the manufacturing industry by offering a solution that enhances grinding wheel performance in high-speed applications, particularly when dealing with challenging materials like tungsten carbide. The CFRP hub grinding wheel's potential to address these challenges can improve the manufacturing efficiency and product quality. In summary, this study's core contribution lies in exploring the CFRP hub's suitability for high-speed grinding, its innovative hub design, and its potential to provide practical solutions to manufacturing challenges, particularly in tungsten carbide processing.