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Kedari Lal Dhaker,
Mahakant Sharma,
Arun Balmiki,
- Assistant Professor, Department, of Mechanical Engineering, Jaypee University of Engineering and Technology, Guna, Madhya Pradesh, India
- Assistant Professor, Department of Computer Science Engineering, Jaypee University of Engineering and Technology, Guna, Madhya Pradesh, India
- B.Tech Student, Department of Mechanical Engineering, Jaypee University of Engineering and Technology, Guna, Madhya Pradesh, India
Abstract
The laser drilling process is an advanced manufacturing technique extensively employed for intricate and high-value components in aerospace, automotive, and electronics industries. Laser drilling technology offers opportunities to meet the contemporary demands of industries using a broad spectrum of engineering materials. However, this process encounters several engineering challenges such as thermal damage, dimensional inaccuracies, and the formation of a recast layer in the drilled components. This study focuses on examining how key process parameters—assist gas pressure, current, stand-off distance, and trepanning speed—affect the thickness of the recast layer in the super alloy Inconel-718. The Design of Experiments methodology is utilized for conducting the experimental work, specifically choosing the Box-Behnken design for the necessary experiments. Following the experimental procedure, the thickness of the recast layer for each drilled hole is measured using Scanning Electron Microscopy (SEM) at IIT Kanpur. The collected measurements are then used to create a multivariable regression model to analyze the impact of the process parameters on recast layer thickness. The generated model showed a strong statistical fit for predicting recast layer thickness in laser trepan drilling, evidenced by an Adjusted R-square of 82%. After examining the developed contour and 3D plots, optimal ranges for the process parameters have been established as follows: assist gas pressure between 7-8 bar, current between 250-260 A, stand-off distance of 1.5-1.6 mm, and trepanning speed of 40-55 mm/min.
Keywords: Laser Trepan drilling, Inconel-718, Regression analysis, Scanning Electron Microscopy, dimensional.
Kedari Lal Dhaker, Mahakant Sharma, Arun Balmiki. Parametric study of laser drilling process using multi variable regression analysis. Journal of Polymer & Composites. 2026; 14(02):-.
Kedari Lal Dhaker, Mahakant Sharma, Arun Balmiki. Parametric study of laser drilling process using multi variable regression analysis. Journal of Polymer & Composites. 2026; 14(02):-. Available from: https://journals.stmjournals.com/jopc/article=2026/view=240175
References
1.Kedari Lal Dhaker and Arun Kumar Pandey. Particle Swarm Optimization of Hole Quality Characteristics in Laser Trepan Drilling of Inconel-718. Defence Science Journal. 2019; 69(1): 37- 45.
2.Nan Zhang, Manshi Wang, Mingxia Ban, Lanjun Guo, Weiwei Liu. Femtosecond laser drilling 100 μm diameter micro holes with aspect ratios > 20 in a Nickel based superalloy. Journal of Materials Research and Technology. 2024; 28: 1415–1422.
3.D. Pramanik, T. Singh , N. Roy, R. Biswas, A.S Kuar , S. Sarkar, S. Mitra. Analysis of performance characteristics with artificial intelligence based TLBO technique for laser drilling of Monelsuperalloy. Optics & Laser Technology.2023; 164:109554.
4.Mengxue Chen, Ling fei Ji, Litian Zhang, Lijie Cao, Hangru Wei , Weigao Sun. Crack propagation characteristics and inhibition mechanism for laser high-efficient drilling of bone. Engineering Fracture Mechanics.2023; 291:109562
5.Kaito Miyakoda, Koki Sunayama, Kosuke Sakamoto, Daijiro Tokunaga, Hirofumi Hidai, SoutaMatsusaka. Curved hole drilling by laser manipulation of a heat spot inside glass. Precision Engineering. 2023; 81: 1–7
6.Helen Elkington, Sundar Marimuthu, Bethan Smith. High power water jet guided laser drilling of angular holes through nickel superalloy. Procedia CIRP. 2022; 111:750–753
7.Nengru Tao, Genyu Chen, Song Cai , Wenjun Fang, Zhengming Xiao. Improving hole quality of thick CFRP laminates through a laser-mechanical compound drilling process. Journal of Materials Research and Technology. 2023; 27:3243–3258.
8.Chao-Ching Ho, Chn-Yi Kao. Laser percussion drilling of transparent hard and brittle materials with ring-shaped electrodes. Journal of Manufacturing Processes.2023;101:432–445.
9.Meng Li, Zhi-xun Wen, Ping Wang, Yu-xing Liu, Zhen-wei Li, Zhu-fengYue, . Femtosecond laser high-quality drilling of film cooling holes in nickel-based single superalloy for turbine blades with a two-step helical drilling method. Journal of Materials Processing Tech. 2023; 312:117827
10.Chang Liu, Cheng Li, Lei Gao, RenfengShen. Micro-hole drilling of 2.5D C/SiC composite with picosecond laser: Numerical modeling and experimental validation on hole shape evolution. Journal of Manufacturing Processes. 2022; 81: 852–864.
11.Levent Subasi, Mustafa I. Gokler , UlasYaman. A comprehensive study on water jet guided laser micro hole drilling of an aerospace alloy. Optics & Laser Technology. 2023;164: 109514.
12.Hailong Zhang, Min Kang, Chenbin Ma, Yang Mao, Xingsheng Wang, Yongnian Zhang. Experimental investigation and optimization of modification during backside-water-assisted laser drilling using flowing water. Journal of Manufacturing Processes. 2023; 101: 999–1012.
13.Nengru Tao, Genyu Chen, Wenjun Fang, Mingquan Li. Understanding the bowl-bottom effect in ultra-short pulsed laser drilling of CFRP laminate Composite Structures. 2023; 305: 116498.
14.Changlong Zheng , Hong Shen. Ablation mechanism in underwater drilling by an ultrafast laser with pulse energy below the water breakdown threshold. Journal of Manufacturing Processes. 2022; 73: 354–363
15.Sidi Ai, Guijian Xiao, Zhongcai Deng, Yun Huang, Shuai Liu, Ouchuan Lin, Shayu Song. Surface integrity of drilling Ti-6Al-4V micro-holes using the ultrashort pulse laser with different three-dimensional paths planning. Journal of Manufacturing Processes. 2023; 102: 244–258.
16.Surendra Kumar Saini, Avanish Kumar Dubey. Study of material characteristics in laser trepan drilling of ZTA. Journal of manufacturing process. 2019; 44:349-358.
17.N. Tamil Alagan, Nikhil TejaSajja, Andreas Gustafsson, Enrico Savio, Andrea Ghiotti, Stefania Bruschi, Rachele Bertolini. Investigation of the quality of Al-CFRP stacks when drilled using innovative approaches. CRP Journal of Manufacturing Science and Technology. 2023; 43: 260–272.
18. Xianjun Kong, Zhanpeng Dang , Xiaole Liu , Minghai Wang. A comparative evaluation of laser assisted drilling CFRP with improved machining mechanism. Journal of Materials Processing Tech.2023; 321:118156.
19.Douglas C. Montgomery. Introduction to Linear Regression Analysis. The Fifth Edition, John Wiley & Sons; 2012,
20.Sharma, Mahakant, and Nidhish Bhatnagar. “The next world war and how it will rely on cyber attacks.” AIP Conference Proceedings. AIP Publishing LLC, 2023, 2963 (1)- 020017..
21.Almeshaal, M., Palanisamy, S., Murugesan, T. M., Palaniappan, M., Santulli, C., Physico-chemical characterization of Grewia Monticola Sond (GMS) fibers for prospective application in biocomposites. Journal of Natural Fibers. 2022; 19(17): 15276–15290.
22.Sivasubramanian Palanisamy, Mayandi Kalimuthu, Alavudeen Azeez, Murugesan Palaniappan , Shanmugam Dharmalingam , Rajini Nagarajan, Carlo Santulli. Wear Properties and Post-Moisture Absorption Mechanical Behavior of Kenaf/Banana-Fiber-Reinforced Epoxy Composites. Fibers. 2022; 10 (32):1-10.
23.Emani Ram Sai Goutham, Shaik Sajeed Hussain, Chandrasekar Muthukumar, Senthilkumar Krishnasamy,T. Senthil Muthu Kumar,Carlo Santulli,Sivasubramanian Palanisamy, Jyotishkumar Parameswaranpillai,Naveen Jesuarockiam. Drilling Parameters and Post-Drilling Residual TensileProperties of Natural-Fiber-Reinforced Composites: A Review. Journal of composite science. 2023; 7(4):136.
24.Palaniappan, Murugesan, Palanisamy, Sivasubramanian, Khan, Rashid, Alrasheedi, Nashmi, Tadepalli, Srinivas, Mani, Thulasi, Santulli, Carlo. Synthesis and suitability characterization of microcrystalline cellulose from Citrus x sinensis sweet orange peel fruit waste-based biomass for polymer composite applications. Journal of Polymer Research. 2024; 31(4):105
25.Padmanabhan , S. Rajesh, S. Karthikeyan, Sivasubramanian Palanisamy, R.A. Ilyas, Nadir Ayrilmis, ElSayed M. Tag-eldin, Mohamed Kchaou, Fick’s diffusion behaviour of aluminum-DMEM reinforced with hemp/bamboo/basalt woven fiber metal laminates (WFML) under different stacking sequences. Ain Shams Engineering Journal. 2024; 15(7):102759.
Journal of Polymer & Composites
| Volume | 14 |
| 02 | |
| Received | 05/09/2025 |
| Accepted | 08/10/2025 |
| Published | 16/04/2026 |
| Publication Time | 223 Days |
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