Laser Cutting (laser + cutting)

Distribution by Scientific Domains


Selected Abstracts


Investigations into the Sealing of Heat Damaged Areas by Applying Polymer Powders During Laser Cutting of Carbon Fiber Reinforced Composites,

ADVANCED ENGINEERING MATERIALS, Issue 7 2010
Peter Jaeschke
Endless carbon fiber reinforced plastics are recognized as having the greatest lightweight construction potential of all materials. Fully automated process chains for the manufacturing of composite structures are needed in order to achieve production rates and cycle times required in many industrial sectors. In this paper, a new technique, based on the in situ sealing of the kerf during high power laser cutting by application of polymer powder is presented. The degree of sealing is analyzed as a function of powder mass flow as well as carrying gas flow and it is shown that moisture uptake can be reduced compared to unsealed laser cut specimens. [source]


Effect of the cutting technique on the residual stress distribution of cut edges in FeSi3 transformer sheets

CRYSTAL RESEARCH AND TECHNOLOGY, Issue 11 2009
M. Böhling
Abstract Samples of laser-scratched FeSi3 transformer sheets have been investigated. The investigations were carried out by using the Kossel and EBSD techniques in our self-designed multifunctional system. The results show residual stress mappings of the cut edges of FeSi3 transformer sheets and their dependence on the cutting process (conventional plate shears, abrasive water-jet technique, laser cutting). (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]


Fast High-Temperature Response of Carbon Nanotube Film and Its Application as an Incandescent Display

ADVANCED MATERIALS, Issue 35 2009
Peng Liu
Super aligned carbon nanotube (CNT) film shows a fast high-temperature response: the film can be heated to incandescence and cools down in about 1 ms. Using screen printing and laser cutting, an incandescent CNT film array that can dynamically display Chinese characters is fabricated. More applications of the film may be developed based on its fast response. [source]


Thick single crystal CVD diamond prepared from CH4 -rich mixtures

PHYSICA STATUS SOLIDI (A) APPLICATIONS AND MATERIALS SCIENCE, Issue 12 2006
G. Bogdan
Abstract Recent interests in freestanding single-crystal CVD diamond (SC-CVD) discs for several applications in electronics led to an intense study of SC-CVD layer growth and properties. In this work we have investigated the growth mechanism of monocrystalline CVD diamond films with surfaces smooth in nanometer scale taking into account the defect incorporation in the SC-CVD layers. Specifically we discuss the surface structure characteristics for these conditions as studied with high-resolution AFM mapping. The as-grown CVD layers were removed from the substrate by laser cutting, followed by a polishing step, yielding freestanding plates. Subsequently, microscopic and colour studies as well as infrared absorption spectroscopy were performed. These investigations revealed the presence of several characteristic defects and impurities. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]


Fabricating Design: A Revolution of Choice

ARCHITECTURAL DESIGN, Issue 4 2010
Frank Barkow
Abstract Berlin-based practice Barkow Leibinger has become synonymous with expertise in digital fabrication. For 12 years, the firm has been engaged in designing buildings for machine-tool company Trumpf in Stuttgart - a relationship that has given the firm remarkable insights into the laser cutting of sheet metal. Here, Frank Barkow describes the fruitful research that the studio has undertaken in laser cutting as well as two innovative projects that have resulted from it. He explains why a new technology like that of digital fabrication must be for architects by necessity ,a revolution of choice' - a speculation on where best to exploit new possibilities, albeit informed by research and experimentation. Copyright © 2010 John Wiley & Sons, Ltd. [source]