An Analytical and Experimental Investigation of Average Laser Power and Angular Scanning Speed Effects on Laser Tube Bending Process

Khalil Ibraheem Imhan,Mohd Idris Shah B Ismail,Nasser Mahdi Hadi Alsabti,Azmi Zakaria,B.T.H.T Baharudin,Ahmad Kamal Ahmad,H.L Yuan,P Tandon,R.K Agarwal,E.X Wang

doi:10.1051/matecconf/20179505008

Khalil Ibraheem Imhan, Mohd Idris Shah B Ismail + Show 8 more

Open Access

https://doi.org/10.1051/matecconf/20179505008

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Abstract

Laser tube bending is a new technique of laser material forming to produce a complex and accurate shape due to its flexibility and high controllability. Moreover, the defects during conventional tube forming such as thinning, wrinkling, spring back and ovalization can be avoided in laser tube bending process, because there is no external force used. In this paper an analytical investigation has been conducted to analyses the effects of average laser power and laser scanning speed on laser tube bending process, the analytical results have been verified experimentally. The model used in this study is in the same trend of the experiment. The results show that the bending angle increased with the increasing of average laser power and decreased with the increasing of angular scanning speed.

Highlights

The laser forming has taken place during the last three decades due to its ability to produce accurate and complicated shapes with perfect controllability [1]
Jie Zhang et al [5] investigated a numerical simulation for tube bending, where there are four lasers scanning schemes, involving point-source circumferential scanning, pulsed line-source axial procession, and line-source axial scanning without and with water cooling
In this paper an analytical investigation has conducted to study the effects of average laser power and laser angular scanning speed on laser tube bending process, the analytical results have verified experimentally

Summary

Introduction

The laser forming has taken place during the last three decades due to its ability to produce accurate and complicated shapes with perfect controllability [1]. [2] proposed an equation for the bending angle taking into account plastic mechanics and validated by an experimental investigation He reported that the bending angle is as a consequence of average laser power, laser angular scanning speed, tube measurements, and material properties. Lawrence et al [6] mentioned that the laser beam diameter is one of the parameters which have to be taken into account in the process design to avoid melting of the material surface. In this paper an analytical investigation has conducted to study the effects of average laser power and laser angular scanning speed on laser tube bending process, the analytical results have verified experimentally

Analytical approaches

Laser parameters

Experiment setup

Results and discussions

Conclusions