Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel

Research output: Contribution to conferencePaper

Abstract

In nanosecond pulsed laser processing, laser beam irradiation normally induces plasma generation, which leads to the reduction of laser energy absorbed into a specimen. Therefore, material removal characteristics are strongly affected by phenomenon of laser induced plasma. Plasma generation is affected by pulse duration and laser intensity, but influence of plasma generation on material removal characteristics has not yet been clarified sufficiently. In this study, influence of pulse duration and laser intensity on plasma was investigated by measurements of transmittance of laser energy through the plasma. Finally, effective energy to material removal characteristics was discussed with calculated laser energy relating to removal volume of mild steel.

Original languageEnglish
Publication statusPublished - Nov 13 2017
Externally publishedYes
Event9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 - Hiroshima City, Japan
Duration: Nov 13 2017Nov 17 2017

Other

Other9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
CountryJapan
CityHiroshima City
Period11/13/1711/17/17

Fingerprint

Pulsed lasers
Carbon steel
Plasmas
Lasers
Processing
Laser pulses
Laser beams
Irradiation

Keywords

  • Laser transmittance
  • Nanosecond pulsed laser
  • Plasma
  • Pulse duration
  • Removal volume

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Cite this

Ito, M., Shinonaga, T., Okamoto, Y., & Okada, A. (2017). Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel. Paper presented at 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan.

Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel. / Ito, Mizuna; Shinonaga, Togo; Okamoto, Yasuhiro; Okada, Akira.

2017. Paper presented at 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan.

Research output: Contribution to conferencePaper

Ito, M, Shinonaga, T, Okamoto, Y & Okada, A 2017, 'Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel', Paper presented at 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan, 11/13/17 - 11/17/17.
Ito M, Shinonaga T, Okamoto Y, Okada A. Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel. 2017. Paper presented at 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan.
Ito, Mizuna ; Shinonaga, Togo ; Okamoto, Yasuhiro ; Okada, Akira. / Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel. Paper presented at 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan.
@conference{97126ef1e1aa46aaad093e467601b5a5,
title = "Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel",
abstract = "In nanosecond pulsed laser processing, laser beam irradiation normally induces plasma generation, which leads to the reduction of laser energy absorbed into a specimen. Therefore, material removal characteristics are strongly affected by phenomenon of laser induced plasma. Plasma generation is affected by pulse duration and laser intensity, but influence of plasma generation on material removal characteristics has not yet been clarified sufficiently. In this study, influence of pulse duration and laser intensity on plasma was investigated by measurements of transmittance of laser energy through the plasma. Finally, effective energy to material removal characteristics was discussed with calculated laser energy relating to removal volume of mild steel.",
keywords = "Laser transmittance, Nanosecond pulsed laser, Plasma, Pulse duration, Removal volume",
author = "Mizuna Ito and Togo Shinonaga and Yasuhiro Okamoto and Akira Okada",
year = "2017",
month = "11",
day = "13",
language = "English",
note = "9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 ; Conference date: 13-11-2017 Through 17-11-2017",

}

TY - CONF

T1 - Influence of pulse duration on effective energy on material in nanosecond pulsed laser processing of mild steel

AU - Ito, Mizuna

AU - Shinonaga, Togo

AU - Okamoto, Yasuhiro

AU - Okada, Akira

PY - 2017/11/13

Y1 - 2017/11/13

N2 - In nanosecond pulsed laser processing, laser beam irradiation normally induces plasma generation, which leads to the reduction of laser energy absorbed into a specimen. Therefore, material removal characteristics are strongly affected by phenomenon of laser induced plasma. Plasma generation is affected by pulse duration and laser intensity, but influence of plasma generation on material removal characteristics has not yet been clarified sufficiently. In this study, influence of pulse duration and laser intensity on plasma was investigated by measurements of transmittance of laser energy through the plasma. Finally, effective energy to material removal characteristics was discussed with calculated laser energy relating to removal volume of mild steel.

AB - In nanosecond pulsed laser processing, laser beam irradiation normally induces plasma generation, which leads to the reduction of laser energy absorbed into a specimen. Therefore, material removal characteristics are strongly affected by phenomenon of laser induced plasma. Plasma generation is affected by pulse duration and laser intensity, but influence of plasma generation on material removal characteristics has not yet been clarified sufficiently. In this study, influence of pulse duration and laser intensity on plasma was investigated by measurements of transmittance of laser energy through the plasma. Finally, effective energy to material removal characteristics was discussed with calculated laser energy relating to removal volume of mild steel.

KW - Laser transmittance

KW - Nanosecond pulsed laser

KW - Plasma

KW - Pulse duration

KW - Removal volume

UR - http://www.scopus.com/inward/record.url?scp=85041371160&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85041371160&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85041371160

ER -