By: Xinwei Wang Department of Mechanical Engineering, Iowa State University This work reports on the pioneering molecular dynamics (MD) modeling of shock waves in laser-material processing. For pulsed laser-assisted material processing with an ambient gas, the fast melting, vaporization, and phase explosion of the target is a very complicated process and will form a strong […]
Month: March 2011
EUV Microscopy
By: Dirk Wortman Laser induced sub-100 nm structures offer vast potential benefits in photonics, biotechnology, tribological surface design and plasmonic applications. However the dynamics of their generation is not well understood. Research in this field requires high temporal and spatial resolution. In this paper, we report on our efforts on setting upand building an EUV-pump-probe […]
Laser Welding: The Spatter Map
Alexander F. H. Kaplan and John Powell Luleå University of Technology, Dept. Applied Physics and Mechanical Engineering, Sweden Welding defects have to be suppressed to maintain the mechanical strength of a product under load. For suitable choice of the process parameters operating windows can be entered where a certain welding defect can be suppressed. However, […]
Using UV Laser Surface Treatment to Modify the Wettability Characteristics of Polyamide 6,6 and its Effects on Osteoblast Cell Activity
By: David G. Waugh and Jonathan Lawrence Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, UK Lincoln School of Engineering, University of Lincoln, UK The need for biological implants grows year upon year and it has been realized that there is a drive within the biomedical industry for cheaper and easier to manufacture products. This […]
Welding Zinc Coated Steels: New Joint Design and Strategy with Scanner Technology
By: Klaus Loeffler, Dr. Tim Hesse, Peter Kaupp TRUMPF Laser und Systemtechnik GmbH, Ditzingen, Germany TRUMPF Werkzeugmaschinen GmbH, Ditzingen, Germany The existing problems of weld defects in welding zinc coated steels in a overlap situation are present in the automotive industry. Overlap joints are the most common type of joint geometry used in the automotive […]