Effect of the focal plane position on CO2 laser beam cutting of injection molded polycarbonate sheets

Mahmoud Moradi, Omid Mehrabi, Taher Azdast, Khaled Y. Benyounis

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

6 Citations (Scopus)

Abstract

In the present research, the effect of laser beam focal plane position (FPP) on the kerf quality of the polycarbonate laser cutting is investigated. Low power CO2 laser is used as the heat source of the cutting runs. In the experiments, FPP is varied from 0 to -4mm while other processing parameters (i.e. laser power, cutting speed and gas pressure) are considered constant. Upper and lower kerf width, kerf taper, upper heat affected zone and surface roughness of the kerf wall are also considered as the responses. Observations signified that reducing the position of the laser beam focal point from zero to - 3mm reduces the upper and lower kerf width. However reducing FPP below -3mm leads to an increase in the kerf width. Results also reveals that upper heat affected zone value reduces by reduction in FPP. Moreover the best kerf wall surface roughness occurred at FPP= -3mm.

Original languageEnglish
Title of host publicationSecond International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2016
EditorsAgus Muhamad Hatta, Aulia M.T. Nasution
PublisherSPIE
ISBN (Electronic)9781510607514
DOIs
Publication statusPublished - 11 Nov 2016
Externally publishedYes
Event2nd International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2016 - Legian - Kuta, Bali, Indonesia
Duration: 24 Aug 201625 Aug 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10150
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2nd International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2016
Country/TerritoryIndonesia
CityLegian - Kuta, Bali
Period24/08/1625/08/16

Bibliographical note

Publisher Copyright:
© 2016 SPIE.

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

  • CO laser beam
  • Laser cutting
  • Laser focal plane position
  • Polycarbonate

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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