Loughborough University
Browse
The use of Holographic Optical Elements (HOEs) to investigate the use of a flat irradiance profile 2ndRV2.pdf (1.35 MB)

The use of holographic optical elements (HOE's) to investigate the use of a flat irradiance profile in the control of heat absorption in wire-fed laser cladding

Download (1.35 MB)
journal contribution
posted on 2015-02-25, 14:03 authored by Nick Goffin, Rebecca HigginsonRebecca Higginson, John TyrerJohn Tyrer
This work investigates the use of holographic optical elements (HOE's) to control the applied heat profile and thermal absorption of a wire used for laser cladding. The two thermal distributions compared were a circular beam with a Gaussian heat profile (Gaussian beam) and a square beam with a flat profile (pedestal beam). Heat absorption calculations between these were carried out to show the potential differences in absorption, with empirical results created to show how the differences in absorption affect the cladding properties. Micrographs of the clad cross-sections were created using optical microscopy and were analysed with respect to wetting angle and clad dilution. These results were compared to an alternative method of applying an even beam profile; enlarging the Gaussian beam relative to the wire diameter. The results showed that the use of a HOE to create a more even beam profile gave superior wetting behaviour and less dilution.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Journal of Materials Processing Technology

Volume

220

Pages

191 - 201

Citation

GOFFIN, N.J., HIGGINSON, R.L. and TYRER, J.R., 2015. The use of holographic optical elements (HOE's) to investigate the use of a flat irradiance profile in the control of heat absorption in wire-fed laser cladding. Journal of Materials Processing Technology, 220, pp. 191 - 201.

Publisher

© Elsevier B.V.

Version

  • NA (Not Applicable or Unknown)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015-01-31

Notes

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Materials Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Materials Processing Technology, VOL 220, 2015. DOI: 10.1016/j.jmatprotec.2015.01.023

ISSN

0924-0136

Language

  • en

Usage metrics

    Loughborough Publications

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC