ICALEO 2006 Paper #P511 (Mechanism of Anisotropic Stress Generation in Laser Peening Process)
Mechanism of Anisotropic Stress Generation in Laser Peening Process
Authors:
Atsushi Sugihashi, Nippon Steel Corporation; Futtsu-City, Chiba Japan
Koji Hirano, Nippon Steel Corporation; Futtsu-City Chiba Japan
Hirofumi Imai, Nippon Steel Corporation; Futtsu-City, Chiba Japan
Naoya Hamada, Nippon Steel Corporation; Futtsu-City, Chiba Japan
Presented at ICALEO 2006
In laser peening process, several laser pulses are irradiated to cover a certain surface area. It has been reported that when coverage ratio of the beam spots is increased, compressive stress near the surface becomes anisotropic, that is, the two principal stresses in the treated area reach differ...$28.00
ICALEO 2006 Paper #P514 (Mechanism and Prediction of Laser Wet Cleaning of Marble Encrustation)
Mechanism and Prediction of Laser Wet Cleaning of Marble Encrustation
Authors:
Fen Xu, City College of New York; New York NY USA
Jie Zhang, Columbia University; New York NY USA
John R. Lombardi, City College of New York; New York NY USA
Y. Lawrence Yao, Columbia University; New York NY USA
Presented at ICALEO 2006
During the removal of encrustation from marble with 355 nm laser pulses, the effects of the thin liquid layer covering the encrustation are experimentally and numerically investigated. The working mechanism of the liquid layer is analyzed. The two-dimensional model is proposed to simulate the changes of the temperature, liquid content and vapor ...$28.00
ICALEO 2006 Paper #P515 (3D Prototyping from Metallic Powder by Laser Beam)
3D Prototyping from Metallic Powder by Laser Beam
Authors:
Teruyuki Hayashi, Chiba Institute of technology; Narashino-shi,Chiba-ken, Japan
Toshiyuki Miyazaki, Chiba Institute of Technology; Narasino-shi,Chiba-ken. Japan
Tsuyoshi Tokunaga, Chiba Institute of Technology; Narashino-shi,Chiba-ken Japan
Yota Mizukami, Polytechnic university; Sagamihara-shi Japan
Presented at ICALEO 2006
Laser melting is one of rapid prototyping techniques. An object can be formed in a short time by heaping up thin layers of molten metal powders. In such a case, a warp is generated in the formed object; thus, the precise shape cannot be obtained. In the present paper, we propos...$28.00
ICALEO 2006 Paper #P516 (Laser Engraving Reflective Metals to Create Scanner Readable Barcodes)
Laser Engraving Reflective Metals to Create Scanner Readable Barcodes
Authors:
Jozef Wendland, Powerlase Limited; West Sussex Great Britain
Paul Harrison, Powerlase Limited; West Sussex Great Britain
Matt Henry, Powerlase Limited; West Sussex Great Britain
Presented at ICALEO 2006
Laser marking of metals and plastics is one of the most widespread of all laser materials processing techniques used throughout the industrial sectors. One remaining challenge is the creation of scanner readable marks on highly reflective materials such as aluminium without the aid of a surface coating. In previous work the authors have presented a novel technique employing a high average po...$28.00
ICALEO 2006 Paper #P517 (Research on Sintering Parameter and Prototyping Quality of Polymer Powders)
Research on Sintering Parameter and Prototyping Quality of Polymer Powders
Authors:
Pengcheng Wang, School of Materials Science and Engineering, Inner Mongolia University of Techno; hohhot Peoples Republic of China
Fushun Zhu, 1-School of Materials Science and Engineering; Hohhot Peoples Republic of China
Junjie Xiao, Imut; Hohhot Peoples Republic of China
Xiaocheng Li, School of materials science and engineering, Inner Mongolia University of Technology; hohhot Peoples Republic of China
Presented at ICALEO 2006
In this paper, the emphasis of the study is polymer powders sintering materials using polymer powders as materials. The properties of the materials...$28.00
ICALEO 2006 Paper #P519 (The Use of Overlapping Nd:YAG Laser Spot Welds to Butt Weld Steelite, a Metal Polymer Laminates)
The Use of Overlapping Nd:YAG Laser Spot Welds to Butt Weld Steelite, a Metal Polymer Laminates
Authors:
Heather Gower, NIMR/ TU Delft; Delft Netherlands
Ian Richardson, NIMR / TU Delft; Delft Netherlands
Raph Pieters, NIMR / TU Delft; Delft Netherlands
Presented at ICALEO 2006
Metal polymer sandwich structures are gaining in importance, especially in the transport industry where lightweight and high stiffness are particularly attractive. To date joining of these laminates has been limited to riveting, splicing or adhesive bonding, all of which require an overlap joint which is not always desirable. This paper presents a new method where overlapping laser spot welds ar...$28.00
ICALEO 2006 Paper #P520 (Financing Strategies Used by Small and Mid-Sized Firms Using Laser Manufacturing Technology to Supply the Aerospace Industry)
Financing Strategies Used by Small and Mid-Sized Firms Using Laser Manufacturing Technology to Supply the Aerospace Industry
Authors:
Devdas Shetty, University of Hartford; West Hartford CT USA
Susan Coleman, University of Hartford; West Hartford CT USA
Tom Eppes, University of Hartford; West Hartford CT USA
Presented at ICALEO 2006
The aerospace industry is comprised of a few large manufacturers and a large number of smaller supplier firms that manufacture components used in the production of aircraft. A key challenge for these smaller firms is the need to remain both economically viable and globally competitive. One of the ways in which they have sought to achieve ...$28.00
ICALEO 2006 Paper #P522 (Development of Laser Cladding Repair System for Damaged Alloy 600 Heat Exchanger Tubes)
Development of Laser Cladding Repair System for Damaged Alloy 600 Heat Exchanger Tubes
Authors:
Sun-Ho Lee, Doosan Heavy Industries & Construction Co., Ltd.; Chang-Won Korea
Won-Jin Han, Doosan Heavy Industries & Construction CO., Ltd.; Chang-Won Korea
Woo-Sung Kim, Doosan Heavy Industiries & Construction Co., Ltd.; chang-won Korea
Presented at ICALEO 2006
Laser cladding repair process and system has been studied for upgrading conservative sleeving process for nuclear steam generator damaged tubes. Our laser cladding repair system consists of laser cladding head, wire feeder, gas supplier, laser beam delivery system, laser oscillation system and main control system. On...$28.00
ICALEO 2006 Paper #P523 (A System for the Removal of Debris Produced during Laser Micromachining)
A System for the Removal of Debris Produced during Laser Micromachining
Authors:
Colin Dowding, Loughborough University; Leicestershire Great Britain
Jonathan Lawrence, Loughborough University; Leicestershire Great Britain
Presented at ICALEO 2006
This paper describes an attempt to solve the issue of removing debris produced in the large-area laser micromachining of micron-scale arrayed geometric features in metals, ceramics and polymers. This was achieved by developing a system that not only hypothetically, but practically limited the build up of debris on the laser micromachined surface, thereby increasing the yield rate of the process. It is often undesirable to use mechanical m...$28.00
ICALEO 2006 Paper #P524 (Research on Application of DSPC via SLS)
Research on Application of DSPC via SLS
Authors:
Pengcheng Wang, College Materials Science and Engineering, Inner Mongolia University of Technology; hohhot. Peoples Republic of China
Fushun Zhu, IMUT; Hohhot Peoples Republic of China
Junjie Xiao, Imut; Hohhot Peoples Republic of China
Xiaocheng Li, IMUT; Hohhot Peoples Republic of China
Presented at ICALEO 2006
This paper describes the new process that combine selective laser sintering(SLS) technology with direct shell production casting (DSPC). In this method, a casting model is reversed into its foundry shell mould in the software environment, such as Pro/e, UG or Magics. Then SLS technology is used to s...$28.00