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Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling

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Main Authors: Noorhafiza, Muhammad, Dr., Rogers, Benedict, Dr., Li, Lin
Other Authors: Noorhafiza.Muhammad@postgrad.manchester.ac.uk
Format: Article
Language:English
Published: IOP Publishing 2014
Subjects:
Smoothed particle hydrodynamics (SPH)
Micromachining
Coronary stents
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/34657
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spelling my.unimap-346572014-05-22T13:23:59Z Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling Noorhafiza, Muhammad, Dr. Rogers, Benedict, Dr. Li, Lin Noorhafiza.Muhammad@postgrad.manchester.ac.uk noorhafiza@unimap.edu.my Benedict.Rogers@manchester.ac.uk lin.li@manchester.ac.uk Smoothed particle hydrodynamics (SPH) Micromachining Coronary stents Link to publisher's homepage at http://iopscience.iop.org/ A smoothed particle hydrodynamics (SPH) numerical model is developed to simulate the three-phase laser micro-machining process for medical coronary stent manufacture. The open-source code SPHysics is used to model the interaction between the laser beam and workpiece. This enables the melt flow behaviour in the non-linear pulsed fibre laser micro-machining process to be modelled. The developed model considers the conversion of laser energy into heat within a very thin surface layer, heat conduction into the parent material and the phase transition between solid, liquid and vapour. A good agreement with experimental data is obtained for predicting the penetration depth and melt ejection velocity. Water is also incorporated in this model to help explain the mechanism in laser wet micro-machining and drilling. It is demonstrated that the meshless characteristics of SPH are able to model the droplets ejected from kerf where it is difficult for conventional modelling. A static beam was used throughout the model development. 2014-05-22T13:23:59Z 2014-05-22T13:23:59Z 2013-03 Article Journal of Physics D: Applied Physics, vol. 46(9), 2013, pages 1-13 0022-3727 http://iopscience.iop.org/0022-3727/46/9/095101 http://dspace.unimap.edu.my:80/dspace/handle/123456789/34657 en IOP Publishing
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Smoothed particle hydrodynamics (SPH)
Micromachining
Coronary stents
spellingShingle Smoothed particle hydrodynamics (SPH)
Micromachining
Coronary stents
Noorhafiza, Muhammad, Dr.
Rogers, Benedict, Dr.
Li, Lin
Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling
description Link to publisher's homepage at http://iopscience.iop.org/
author2 Noorhafiza.Muhammad@postgrad.manchester.ac.uk
author_facet Noorhafiza.Muhammad@postgrad.manchester.ac.uk
Noorhafiza, Muhammad, Dr.
Rogers, Benedict, Dr.
Li, Lin
format Article
author Noorhafiza, Muhammad, Dr.
Rogers, Benedict, Dr.
Li, Lin
author_sort Noorhafiza, Muhammad, Dr.
title Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling
title_short Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling
title_full Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling
title_fullStr Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling
title_full_unstemmed Understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (SPH) modelling
title_sort understanding the behaviour of pulsed laser dry and wet micromachining processes by multi-phase smoothed particle hydrodynamics (sph) modelling
publisher IOP Publishing
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/34657
_version_ 1643797557129773056
score 13.222552

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