ICALEO 2006 Paper #1506 (CO2 Laser Irradiation of a Magnesia Partially Stabilized Zirconia (MgO-PSZ) Bioceramic and the Subsequent Improvements in Human Osteoblast Cell Adhesion)
CO2 Laser Irradiation of a Magnesia Partially Stabilized Zirconia (MgO-PSZ) Bioceramic and the Subsequent Improvements in Human Osteoblast Cell Adhesion
Authors:
Jonathan Lawrence, Loughborough University; Leicestershire Great Britain
Liang Hao, Loughborough University; Leicestershire Great Britain
Presented at ICALEO 2006
In order to acquire the ideal surface properties to favour osseointegration at the implant-bone interface, osteoblast cells were used in an in vitro test to examine changes in cell adhesion on a magnesia partially stabilised zirconia (MgO-PSZ) bioceramic after CO2 laser treatment. The surface roughness, microstructure, crystal size and surface energy of untreated...$28.00
ICALEO 2006 Paper #1505 (Laser-Induced Wettability Characteristics Modification and the Effect Thereof on Cell Response on a Titanium Alloy)
Laser-Induced Wettability Characteristics Modification and the Effect Thereof on Cell Response on a Titanium Alloy
Authors:
Jonathan Lawrence, Loughborough University; Leicestershire Great Britain
Liang Hao, Loughborough University; Leicestershire Great Britain
Presented at ICALEO 2006
It was found that interaction of a Nd:YAG laser beam with the Ti6Al4V alloy resulted in the wettability characteristics of the bio-metal improving. Such improvements in the wettability characteristics of the Ti6Al4V alloy were found to be due to: an increase in the surface roughness; and increase in the surface oxygen content and an increase in the polar component of the surface energy. From in vitro...$28.00
ICALEO 2006 Paper #1504 (Plasma Spray Hydroxyapatite Coating on Laser Surface Nitrided Ti6Al4V Alloy)
Plasma Spray Hydroxyapatite Coating on Laser Surface Nitrided Ti6Al4V Alloy
Authors:
Hau Chung Man, Hong Kong Polytechnic University; Hung Hom, Kowloon Hong Kong
Sen Yang, Hong Kong Polytechnic University; Hong Kong
Xuebin Zheng, Shanghai Institute of Ceramics; Peoples Republic of China
Presented at ICALEO 2006
To accelerate the bone growth around a metallic implant, a layer of bioactive ceramic such as hydroxyapatite (HA) can be applied as a coating on the metal implant. One of the critical factors for successful implantation is that the HA coating must have strong adherence to the metal substrate at the interface. Many coating techniques have been developed over ...$28.00
ICALEO 2006 Paper #1503 (Production of Biofibers by Laser Spinning)
Production of Biofibers by Laser Spinning
Authors:
Antonio Riveiro, Universidade de Vigo; Vigo Spain
Felix Quintero, Universidade de Vigo; Vigo Spain
Juan Pou, Universidade de Vigo; Vigo Spain
Adrian Mann, Rutgers State University; Piscataway NJ USA
Fernando Lusquiños, Universidade de Vigo; Vigo Spain
Presented at ICALEO 2006
A new technique called laser spinning is presented in this work. This technique was employed for the synthesis of bioactive fibres. The technique is based in the laser melting of a glass plate under atmospheric conditions at room temperature. A high pressure gas jet is employed to assist the process. The glass plate was ...$28.00
ICALEO 2006 Paper #1501 (Microstructure and Mechanical Properties of Laser-Deposited Ti-6Al-4V Scaffold)
Microstructure and Mechanical Properties of Laser-Deposited Ti-6Al-4V Scaffold
Authors:
Guru Dinda, University of Michigan; Ann Arbor MI USA
Jyoti Mazumder, University of Michigan; Ann Arbor MI USA
Lijun Song, University of Michigan; Ann Arbor MI USA
Presented at ICALEO 2006
Direct laser deposition is a rapid prototyping method which can be used to manufacture near net shape components using powders from their CAD files in one step. The aim of the present work is to produce ideal Ti-6Al-4V scaffold (a supporting structure for growing cells and tissues) using direct laser deposition technique and to study the microstructure and mechanical properties for its applicabilit...$28.00
ICALEO 2006 Paper #1405 (In Situ Evaluation of Metallic Coatings via Laser Plasma Spectroscopy)
In Situ Evaluation of Metallic Coatings via Laser Plasma Spectroscopy
Authors:
Bhupendra Gupta, GE Infrastructure - Aviation; Cincinnati OH USA
Pamela Benicewicz, GE Global Research; Niskayuna NY USA
Presented at ICALEO 2006
We present a method and apparatus that provides in situ, near real-time evaluation of metallic coatings used as protective barriers for various industrial applications. Identification of the elemental constituents of the coating and substrate is accomplished using the technique of laser plasma spectroscopy, whereby optical emissions from the plasma formed by focusing a high energy pulsed laser onto a part coating or substrate surface uniquely identify the elem...$28.00
ICALEO 2006 Paper #1404 (Camera Based Feedback Control of the Laser Cladding Process)
Camera Based Feedback Control of the Laser Cladding Process
Authors:
Johannes Hofman, University of Twente; Enschede Netherlands
D.F. de Lange, Netherlands Institute for Metals Research; Enschede Netherlands
J. Meijer, University of Twente; Netherlands
Presented at ICALEO 2006
A camera based feedback controller is designed and implemented to optimize the energy input during the process. This controller eliminates the need and effort to experimentally optimize the process. Moreover this controller automatically determines the required energy input to meet a well-defined criterion for a wide range of speeds, powder mass rates and material combinations. Also, it correct...$28.00
ICALEO 2006 Paper #1403 (Sensing and Experimental Based Modeling of Direct Metal Deposition)
Sensing and Experimental Based Modeling of Direct Metal Deposition
Authors:
Jyoti Mazumder, University of Michigan; Ann Arbor MI USA
Lijun Song, University of Michigan; Ann Arbor MI USA
Presented at ICALEO 2006
This paper presents an experimental investigation on the process dynamics of direct metal deposition. An optical sensing system, including three couple charged device cameras and a two-color pyrometer, is used to monitor molten pool geometry and pool temperature during the deposition process. Molten pool area size and height are obtained by image processing. Auto regressive exogenous models and state space models are implemented to identify the direct metal deposition proces...$28.00
ICALEO 2006 Paper #1402 (Optical Inspection of Laser Drilled Cooling Holes in Jet Engine Blades)
Optical Inspection of Laser Drilled Cooling Holes in Jet Engine Blades
Authors:
Devdas Shetty, University of Hartford; West Hartford CT USA
Nikolai Nazaryan, University of Hartford; West Hartford CT USA
Tom Eppes, University of Hartford; West Hartford CT USA
Claudio Campana, University of Hartford; West Hartford CT USA
Jun Kondo, University of Hartford; West Hartford CT USA
Presented at ICALEO 2006
The need for improved engine efficiency of jet engines has led to changes in the design of combustor turbine blades. To combat and avert turbine blade failure caused by excessive operating temperatures, film cooling has been incorporated into blade ...$28.00
ICALEO 2006 Paper #1401 (A Novel Non-Intrusive Technique for CO2 Laser On-line Beam Monitoring)
A Novel Non-Intrusive Technique for CO2 Laser On-line Beam Monitoring
Authors:
Martin Sparkes, The University Of Cambridge; Cambridge Great Britain
Markus Gross, The University Of Cambridge; Cambridge Great Britain
Edward Pain, The University Of Cambridge; Cambridge Great Britain
William O'Neill, The University Of Cambridge; Cambridge Great Britain
Presented at ICALEO 2006
The measurement of high speed laser beam parameters during processing is a topic that has seen growing attention over the last few years as quality assurance places greater demand on the monitoring of the manufacturing process. The targets for any monitoring system is to be non intrusiv...$28.00
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