First and second law analyses of laser cutting process in relation to the end product quality

Sahin A. Z., Ayar T., Yilbas B. S.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH, cilt.32, sa.8, ss.689-697, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Sayı: 8
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1002/er.1379
  • Dergi Adı: INTERNATIONAL JOURNAL OF ENERGY RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.689-697
  • Anahtar Kelimeler: laser, cutting, efficiency, second law analysis, MILD-STEEL, PARAMETERS, LAYER, EDGE
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

Thermal analysis of laser cutting process is carried out, and the first and second law efficiencies of the cutting process are formulated. Thermal efficiencies are predicted for various laser scanning speeds and laser output power levels. The experiment is conducted to examine the resulting cutting sections. The F-test is conducted to assess the end product (cutting section) quality and, later, the thermal efficiencies are related to the end product quality. It is found that increasing laser output power lowers the first and second law efficiencies of cutting, which is more pronounced with reducing the laser scanning speeds. The end product quality improves for low laser output power levels and high laser scanning speeds similar to the thermal efficiencies. Copyright (C) 2007 John Wiley & Sons, Ltd.