May 21, 2013

Dortmund:
- till middle of June: Dispenser (automatic glueing) and first mats for
Heidelberg casting tests
- second half of June: winding raw fiber mats for other sub groups
- July: building table for cutting (stone table arrives end of June)
- Beginning of August: milling spindle arrives, start of cutting

Heidelberg:
- till end of June: working on the casting machine without alignment and
development of production of own fiber mats for casting tests
- July&August: casting machine including alignment
Heidelberg with CERN (experience of Christian) will also have a look at
cutting the ends of the fiber mats (started)

Problems:
- it's difficult to predict how long optimizations will take
- the limiting factor are rather the casting and cutting then the raw
fiber mats (to current knowledge)

June 12, 2013 Update

Dortmund:

  • small wheel position optimised that:
    • full width can be used (about 5cm)
    • dispenser for automatic glueing can be used

  • next steps (probably till end of June)
    • winding on the small wheel with grooves, dispenser and fibres
    • winding on the big wheel with grooves, dispenser and fibres
Heidelberg:

  • some sucess with casting
    • different versions of molds
    • safe taking out of molded mats achieved
    • allignment will start soon

July 09 , 2013 Update

general comments:

  • Dortmund borrowed a technician from an other chair
    • will stay till start of winter semester
    • works on fibre quality machine
  • Dortmund has help from two Russian engineers:
winding:

  • Dortmund:
    • wound first 3m SciFi mat
      • automatic glueing used (dispenser)
      • width approx 1cm
    • if it was necessary a 13cm wide mat would be possible, but optimizations preferred before
      • optimize dispenser (too irregular)
      • optimize starting edge of mat
      • verify achieved quality
casting:

  • Heidelberg:
    • molds without alignment look good
      • took time to optimize (e.g. air bubbles)
    • alignment still to be implemented
cutting along fibre:

  • Dortmund:
    • see May 21
    • stone table ready to arrive
fibre end machining

July 16 , 2013 Update

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf FibreMatRnD-Schedule_20130716.pdf r1 manage 76.2 K 2013-07-31 - 16:50 RobertEkelhof  
PDFpdf Fibre_Offset_Simulation_130708.pdf r1 manage 608.0 K 2013-07-16 - 09:25 RobertEkelhof Talk by Katya
PDFpdf Fibrewheel_Clamps.pdf r1 manage 1125.6 K 2013-07-16 - 09:25 RobertEkelhof Talk by Alexander
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Topic revision: r6 - 2013-07-31 - RobertEkelhof
 
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