%0 Journal Article
	%A L. Pina and  M. Mika and  R. Havlikova and  M. Landova and  L. Sveda and  R. Hudec and  V. Marsikova and  A. Inneman
	%D 2011
	%J International Journal of Physical and Mathematical Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 58, 2011
	%T In-Situ Monitoring the Thermal Forming of Glass and Si Foils for Space X-Ray Telescopes
	%U https://publications.waset.org/pdf/872
	%V 58
	%X We developed a non-contact method for the in-situ
monitoring of the thermal forming of glass and Si foils to optimize
the manufacture of mirrors for high-resolution space x-ray
telescopes. Their construction requires precise and light-weight
segmented optics with angular resolution better than 5 arcsec. We
used 75x25 mm Desag D263 glass foils 0.75 mm thick and 0.6 mm
thick Si foils. The glass foils were shaped by free slumping on a
frame at viscosities in the range of 109.3-1012 dPa·s, the Si foils by
forced slumping above 1000°C. Using a Nikon D80 digital camera,
we took snapshots of a foil-s shape every 5 min during its isothermal
heat treatment. The obtained results we can use for computer
simulations. By comparing the measured and simulated data, we can
more precisely define material properties of the foils and optimize
the forming technology.
	%P 1570 - 1573