Laser Drilling in Extremely Hard Formation

2020 ◽  
Author(s):  
Sameeh I. Batarseh ◽  
Abdullah M. Alharith ◽  
Wisam Assiri ◽  
Damian San Roman Alerigi
Keyword(s):  
Laser Drilling ◽  
Hard Formation

Laser drilling of pet-backed unfired ceramic

2006 ◽  
Author(s):  
Leonard Migliore
Keyword(s):  
Laser Drilling

Laser drilling of single crystal silicon carbide substrates

2006 ◽  
Author(s):  
Chong Zhang ◽  
Nathaniel R. Quick ◽  
Aravinda Kar
Keyword(s):  
Silicon Carbide ◽  
Single Crystal ◽  
Single Crystal Silicon ◽  
Laser Drilling ◽  
Crystal Silicon

Laser drilling micro-holes on a novel coronary drug delivery catheter

1997 ◽  
Author(s):  
Jordan Bajor
Keyword(s):  
Drug Delivery ◽  
Laser Drilling ◽  
Micro Holes ◽  
Delivery Catheter

THE DEVELOPMENT OF THE TECHNOLOGY OF LASER DRILLING AND KEY CHALLENGES OF IMPLEMENTATION IN THE INDUSTRY

2017 ◽  
Vol 12 (41) ◽  
pp. 18-22
Author(s):  
S. N. Yatsenko ◽  
◽  
M. A. Yatsenko ◽  
D. P. Skobelev ◽  
◽  
...  
Keyword(s):  
Laser Drilling

Laser Drilling of Porous Aluminum Silicate Ceramics

2021 ◽  
Author(s):  
Ya. S. Fironov ◽  
I. V. Mel’nikov ◽  
E. R. Nadezhdin ◽  
V. N. Tokarev
Keyword(s):  
Laser Drilling ◽  
Aluminum Silicate ◽  
Porous Aluminum

scholarly journals Analysis and optimization of laser drilling process during machining of AISI 303 material using grey relational analysis approach

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
V. Chengal Reddy ◽  
Thota Keerthi ◽  
T. Nishkala ◽  
G. Maruthi Prasad Yadav
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
Grey Relational Analysis ◽  
Pulse Frequency ◽  
Laser Drilling ◽  
Simultaneous Optimization ◽  
Fibre Laser ◽  
Drilling Process ◽  
Relational Analysis ◽  
Grey Relational

AbstractSurface roughness and heat-affected zone (HAZ) are the important features which influence the performance of the laser-drilled products. Understanding the influence of laser process parameters on these responses and identifying the cutting conditions for simultaneous optimization of these responses are a primary requirement in order to improve the laser drilling performance. Nevertheless, no such contribution has been made in the literature during laser drilling of AISI 303 material. The aim of the present work is to optimize the surface roughness (Ra) and HAZ in fibre laser drilling of AISI 303 material using Taguchi-based grey relational analysis (GRA). From the GRA methodology, the recommended optimum combination of process parameters is flushing pressure at 30 Pa, laser power at 2000 W and pulse frequency at 1500 Hz for simultaneous optimization of Ra and HAZ, respectively. From analysis of variance, the pulse frequency is identified as the most influenced process parameters on laser drilling process performance.

scholarly journals Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2953
Author(s):  
Hao Jiang ◽  
Caiwen Ma ◽  
Ming Li ◽  
Zhiliang Cao
Keyword(s):  
Carbon Fiber ◽  
Femtosecond Laser ◽  
Picosecond Laser ◽  
Laser Drilling ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Laser Parameters ◽  
Reinforced Polymer ◽  
Cfrp Composites ◽  
Cylindrical Holes

Ultrafast laser drilling has been proven to effectively reduce the heat-affected zone (HAZ) of carbon fiber-reinforced polymer (CFRP) composites. However, previous research mainly focused on the effects of picosecond laser parameters on CFRP drilling. Compared with a picosecond laser, a femtosecond laser can achieve higher quality CFRP drilling due to its smaller pulse width, but there are few studies on the effects of femtosecond laser parameters on CFRP drilling. Moreover, the cross-sectional taper of CFRP produced by laser drilling is very large. This paper introduces the use of the femtosecond laser to drill cylindrical holes in CFRP. The effect of laser power, rotational speed of the laser, and number of spiral passes on HAZ and ablation depth in circular laser drilling and spiral laser drilling mode was studied, respectively. It also analyzed the forming process of the drilling depth in the spiral drilling mode and studied the influence of laser energy and drilling feed depth on the holes’ diameters and the taper. The experimental results show that the cylindrical hole of CFRP with a depth-to-diameter ratio of about 3:1 (taper < 0.32∘, HAZ < 10 m) was obtained by using femtosecond laser and a spiral drilling apparatus.

Water-jet guided laser drilling of thermal barrier coated aerospace alloy

2021 ◽  
Vol 113 (1-2) ◽  
pp. 177-191
Author(s):  
Sundar Marimuthu ◽  
Bethan Smith
Keyword(s):  
Laser Drilling ◽  
Water Jet ◽  
Thermal Barrier
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