Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - A method and model for deposition of TI-6Al-4V with controlled porosity
AU - Ahsan, M. N.
AU - Pinkerton, A.J.
PY - 2009
Y1 - 2009
N2 - The use of porous engineered materials is gaining popularity in biomedical implant manufacture due to its capability to promote increased osseointegration and cell proliferation. A method to produce such parts is laser direct metal deposition (LDMD) - a rapid manufacturing technique that has much flexibility. In this work, a 1.5 kW high power diode laser with coaxial powder feed nozzle has been used to manufacture a number of porous multilayer structures from titanium alloy, Ti-6Al-4V. It is found that by optimizing the deposited track geometry and track offset distance, the overall porosity of the structure and pore size can be controlled. Micro computed topography (MicroCT) has been used to examine the internal morphology of the porous structures. An analytical model for direct laser deposition to account for the interaction of multiple tracks in a porous structure has also been developed and is shown to realistically model the multiple layer deposition process.
AB - The use of porous engineered materials is gaining popularity in biomedical implant manufacture due to its capability to promote increased osseointegration and cell proliferation. A method to produce such parts is laser direct metal deposition (LDMD) - a rapid manufacturing technique that has much flexibility. In this work, a 1.5 kW high power diode laser with coaxial powder feed nozzle has been used to manufacture a number of porous multilayer structures from titanium alloy, Ti-6Al-4V. It is found that by optimizing the deposited track geometry and track offset distance, the overall porosity of the structure and pore size can be controlled. Micro computed topography (MicroCT) has been used to examine the internal morphology of the porous structures. An analytical model for direct laser deposition to account for the interaction of multiple tracks in a porous structure has also been developed and is shown to realistically model the multiple layer deposition process.
M3 - Conference contribution/Paper
SP - 462
EP - 471
BT - Proceedings of the 28th International Congress on Applications of Lasers and Electro-optics (ICALEO)
PB - Laser Institute of America
ER -