Investigation of the effect of irradiance and pulse duration in industrial percussion laser-drilling of Waspaloy

2011 ◽  
Vol 23 (4) ◽  
pp. 042006 ◽  
Author(s):  
Robin Bright ◽  
Harris L. Marcus
Keyword(s):  
Pulse Duration ◽  
Laser Drilling ◽  
Percussion Laser Drilling

scholarly journals An integrated analysis of productivity, hole quality and cost estimation of single-pulse laser drilling process

2020 ◽  
pp. 095440542096816
Author(s):  
Shoaib Sarfraz ◽  
Essam Shehab ◽  
Konstantinos Salonitis ◽  
Wojciech Suder ◽  
Misbah Niamat ◽  
...  
Keyword(s):  
Pulse Duration ◽  
Flow Rate ◽  
Pulse Energy ◽  
Gas Flow ◽  
Single Pulse ◽  
Laser Drilling ◽  
Drilling Process ◽  
Gas Flow Rate ◽  
Hole Quality ◽  
Drilling Cost

Laser drilling is a well-established manufacturing process utilised to produce holes in various aeroengine components. This research presents an experimental investigation on the effects of laser drilling process parameters on productivity (material removal rate), hole quality (hole taper) and drilling cost. Single-pulse drilling was employed to drill a thin-walled Inconel 718 superalloy plate of 1 mm thickness using pulsed Nd:YAG laser. The experiments were designed using Box-Behnken statistical approach to investigate the impacts of pulse energy, pulse duration, gas pressure and gas flow rate on the selected responses. Multi-objective optimisation was performed using response surface methodology (RSM) based grey rational analysis (GRA) to identify optimal drilling conditions aiming to maximise the MRR and minimise hole taper and drilling cost. The optimal combination of drilling parameters was found as pulse energy of 20 J, pulse duration of 6 ms, gas pressure of 100 psi and gas flow rate of 40 mm3/s. A detailed cost analysis identified labour cost, gas consumption and machine costs as the major cost elements of the laser drilling process.

A new model of percussion laser drilling

2006 ◽  
Vol 26 (4) ◽  
pp. 218
Author(s):  
N.D. Pandey ◽  
H.S. Shan ◽  
T. Mohandas
Keyword(s):  
Laser Drilling ◽  
New Model ◽  
Percussion Laser Drilling

Optical emissions for monitoring of the percussion laser drilling process

2009 ◽  
Vol 46 (5-8) ◽  
pp. 589-603 ◽  
Author(s):  
Aristidis Stournaras ◽  
Konstantinos Salonitis ◽  
George Chryssolouris
Keyword(s):  
Laser Drilling ◽  
Drilling Process ◽  
Optical Emissions ◽  
Percussion Laser Drilling

Comparison of percussion laser drilling quality with and without water-based ultrasonic assistance

2018 ◽  
Vol 36 ◽  
pp. 175-180 ◽  
Author(s):  
Houxiao Wang ◽  
Guoxiang Xu ◽  
Sukai Zhu ◽  
Wei Zhou ◽  
Naifei Ren ◽  
...  
Keyword(s):  
Laser Drilling ◽  
Water Based ◽  
Drilling Quality ◽  
Percussion Laser Drilling
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