12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Characterization of weld bead geometry in fibre...
View graph of relations

« Back

Characterization of weld bead geometry in fibre laser butt welding of mild steel sheets by means of statistical modelling

Research output: Contribution to journalJournal article

Published

Journal publication date2012
JournalLasers in engineering
Journal number5-6
Volume22
Number of pages18
Pages281-298
Original languageEnglish

Abstract

This paper presents the effect of process parameters on the geometry characteristics in butt welding of 1.5 mm mild steel sheets using a I kW single mode fibre laser at a range of laser powers, welding speeds and laser focal point position. Experiments were planned using the statistical design of experiment (DoE) technique for optimizing the above selected welding parameters and statistical modelling technique was employed to understand their interactions and significance. Suitable parameters to achieve net-shape welds were identified. Experimental methodology and results are detailed and the results are discussed. Micro-hardness measurements and tensile stress testing were carried out. It has been shown that laser net-shape welded samples have superior mechanical properties.