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  4. Simulation der Disruptions-Belastung von Erste-Wand-Hochtemperturmaterialien
 
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1994
Journal Article
Title

Simulation der Disruptions-Belastung von Erste-Wand-Hochtemperturmaterialien

Other Title
Simulation of disruption loads on first-wall high-temperature materials
Abstract
The behaviour of carbon materials under thermal load in fusion reactors has been simulated by laser-pulse irradiation in a scanning electron mocroscope (SEM). In this way material damage, such as thermal shock crack formation and propagation, and erosion behaviour, can be studied in situ in the SEM with high lateral resolution. The dependence of damage initiation and propagation on the laser-beam parameters (pulse number, energy, spot size, spot duration and energy density), is of special interest. The damage behaviour is strongly determined by special materials structures. Because of its fibre reinforcement, the investigated CFC composite materials proved to be more stable to erosion and crack formation than homogeneous finegrained graphites. High-temperature damage may be diminished by the use of carbon materials with creep-resistant components.
Author(s)
Wetzig, K.
Menzel, S.
Rossek, U.
Schultrich, B.
Journal
Journal of Materials Science : JMS  
DOI
10.1007/BF00349942
Language
German
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Keyword(s)
  • carbon material

  • crack formation

  • high temperature loading

  • Hochtemperaturbelastung

  • Kohlenstoffwerkstoff

  • laser irradiation

  • Laserbestrahlung

  • Rißbildung

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