Multi-Quality Decision Using Preference Selection Index Method in Laser Trepan Cutting of Thin Electrical Steel
Year: 2025
Type: article
Abstract: Laser machining has become an excellent choice for cutting thin metal substrates due to its ability to deliver high-quality cuts with minimal material waste and fast processing times. In this research, a Nd: YAG nanosecond laser was studied for cutting a hole of a thin electrical steel, with a thickness of 0.1 mm. The trepanning technique was targeted for cutting a circle with a diameter of 1 mm. The three process parameters: laser power (P), scanning speed (v), and pulse frequency (f) are examined to evaluate their influences on the four cutting qualities of the heat affected-zone (HAZ), height of recast layer (HR), width of recast layer (WR) and error of diameter (ED). Each process parameter is elected with three levels and a total of 27 experimental datasets are achieved. Based on the experimental results, the preference selection index (PSI) method was used to determine a set of process parameters through the best cutting multi-quality. Through implementing the PSI calculation, the result shows that the best quality is found by the qualities of HAZ = 82.1 µm, HR = 17.4 µm, WR = 24.2 µm and ED = 14 µm at process parameters of P = 9 W, v = 600 mm/s, and f = 30 kHz.
Source: Key engineering materials
DOI: 10.4028/p-7wk7p2
Authors: Hoai Tan Nguyen, Van Tai Nguyen, Van Cuong Nguyen, Kim Vang Nguyen, Jeng Rong Ho
Institutions: Can Tho University, National Central University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408844233