Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore

Towards Optimization of Vibratory Manufacturing Process in Aerospace Industry

Abhay Gopinath1,2,a, A. Senthil Kumar1 and Arun Prasanth Nagalingam2

1Department of Mechanical Engineering, National University of Singapore, 21 Lower Kent Ridge Rd, Singapore

2Rolls-Royce Singapore Pte Ltd, 1 Seletar Aerospace Crescent, Singapore


Shot Peening is a relatively common technology to improve the fatigue life of aerospace parts. However, the high surface roughness post shot peening, results in a debit on its aerodynamic efficiency. Hence it is common practice to apply an additional vibratory manufacturing process like vibropolishing onto the aerospace part thereby bringing the surface roughness to drawing requirements. In this paper the author has investigated an optimization of vibratory manufacturing process where the high cost shot peening process could be eliminated. The author also introduces a process monitoring and control method for the optimized process with a demonstration of repeatability and reproducibility at a micron level into the material thickness. Finally, through a fundamental approach the author also opens the possibility of further improving the efficiency through optimization of the process.

Keywords: Vibratory peening, process monitoring and control, manufacturing, aerospace, residual stress

PDF Download