Surface roughness analysis and improvement of PMMA-based micro-fluidic chip chamber by CO2 laser cutting

This study investigated the impact of the laser speed and power, and the position and orientation of the samples, on the average surface roughness (Ra) and dimensional accuracy (DA) during CO2 laser cutting of polymethyl methacrylate (PMMA) thin sheets. A mixed five-parameter fractional factorial design was applied, and thirty-six measurements for the Ra and DA were obtained. The experimental results were analysed using ANOM diagrams, ANOVA analysis and interaction plots of all parameters. It was concluded that the laser speed is the critical parameter for both surface roughness and dimensional accuracy, resulting in strong interactions with laser power and positioning parameters. It was also shown that Ra values are affected by the orientation of the specimen and can be minimized when the samples are aligned in the laser travel direction. Finally, it was proved that lower laser speed improves the average roughness but reduces the dimensional accuracy.

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Statistical Process Control of Surface Roughness during CO2 Laser Cutting using Oxygen as Assist Gas

DAAAM Proceedings - Proceedings of the 26th International DAAAM Symposium 2016 ◽

10.2507/26th.daaam.proceedings.034 ◽

2016 ◽

pp. 0247-0255

Author(s):

Derzija Begic-Hajdarevic ◽

Mugdim Pasic ◽

Branko Vucijak ◽

Ahmet Cekic

Keyword(s):

Surface Roughness ◽

Process Control ◽

Statistical Process Control ◽

Co2 Laser ◽

Laser Cutting ◽

Statistical Process

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Experimental Comparison of the Microstructure and Surface Roughness in CO2 Laser Cutting of the Titanium Alloy Ti–6Al–4V and the Pure Titanium Ti

Mechanics of Composite, Hybrid and Multifunctional Materials, Volume 5 - Conference Proceedings of the Society for Experimental Mechanics Series ◽

10.1007/978-3-319-95510-0_31 ◽

2018 ◽

pp. 249-255 ◽

Cited By ~ 1

Author(s):

B. El Aoud ◽

M. Boujelbene ◽

E. Bayraktar ◽

S. Ben Salem ◽

A. Boudjemline

Keyword(s):

Surface Roughness ◽

Titanium Alloy ◽

Co2 Laser ◽

Laser Cutting ◽

Pure Titanium ◽

Experimental Comparison

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Parametric investigation and modelling of hardness and surface quality in CO2 laser cutting process of AISI 314 Stainless steel

Journal of New Materials for Electrochemical Systems ◽

10.14447/jnmes.v20i3.402 ◽

2017 ◽

Vol 20 (3) ◽

pp. 101-107 ◽

Cited By ~ 1

Author(s):

V. Senthilkumar ◽

G. Jayaprakash

Keyword(s):

Surface Roughness ◽

Stainless Steel ◽

Surface Quality ◽

Co2 Laser ◽

Laser Power ◽

Laser Cutting ◽

Cutting Speed ◽

Cutting Parameters ◽

Manufacturing Method ◽

Kerf Taper

Laser cutting is the popular unconventional manufacturing method widely used to cut various engineering materials. In this work CO2 laser cutting of AISI 314 satinless steel has been investigated. This paper focus on the investigation into the effect of laser cutting parameters like laser power, assist gas pressure, cutting speed and stand-off distance on surface roughness, hardness and kerf dimensions like kerf width, kerf ratio and kerf taper in CO2 laser cutting of AISI 314 stainless steel.

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