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Very interesting alternative to classic aluminium sandwich panels represent composite sandwich panels. In this material is combined glassfiber (carbonfiber) as cover sheet and Nomex honeycomb as core.

This composition assure extra low weight and possibility to glue into panel any insert, reinforcement, edges etc. Our production technology allows to produce spatial shaped panels.






 Advantages

  • high strength
  • high stiffness
  • very low weigth (light structure)
  • possible production of 3D shapes

 

Application

  • aviation (seats, side panels, floor, doors, elveators, covers, wing flaps, radome)
  • transportation (interior wall panels, covers)
  • shipbuilding  




Standard composite panels

In addition to our specialization (custom tailored sandwiches) we have the standard assortment of panels, which represents panels with open edges in two basic dimensions.

   
Dimension 2 000 x 1 000 mm
2 500 x 1 250 mm
Skin
 fiberglass (3 layers glass fabric 306 g/m2 + 3 layers Letoxit LFX 023, 300 g/m2)
Core aluminium honeycomb, thickness 0,06 mm,  AL 99,5


 

Weight of standard composite panels 

Sandwich thickness cell size*
OK 6 OK 8 OK 10 OK 14
weight (kg) weight (kg) weight (kg) weight (kg)

2000x1000 2500x1250 2000x1000 2500x1250 2000x1000 2500x1250 2000x1000 2500x1250
7 mm 8,2 12,8
 7,9 12,3 7,7 12,0 7,6 11,9
10 mm 8,8 13,8
 8,3 13,0 7,9 12,3 7,8 12,2
15 mm 10,1 15,8
 8,9 13,9 8,3 13,0 8,2 12,8
20 mm 10,8 16,9
 9,6 15,0 8,7 13,6 8,5 13,3
25 mm 11,8 18,4
 10,2 15,9 9,1 14,2 8,9 13,9
30 mm 12,5 19,5
 10,9 17,0 9,5 14,8 9,2 14,4
35 mm 13,8 21,6
 11,5 18,0 9,9 15,5 9,6 15,0
40 mm 14,3 22,3
 12,2 19,1 10,3 16,1 9,9 15,5
50 mm 16,2 25,3
 13,4 20,9 11,1 17,3 10,6 16,6
60 mm 18,1 28,3
 14,7 23,0 11,9 18,6 11,3 17,7
70 mm 19,9 31,1
 15,6 24,4 12,7 19,8 12,0 18,8
80 mm 21,8 34,1 17,3 27,0 13,5 21,1 12,7 19,8

*OK: průměr kružnice vepsané v mm

 

Deflection of standard composite panels

Sandwich thickness
 deflection**
2 000 x 1 000 2 500 x 1 250
7 mm 134,5 mm 210,1 mm
10 mm 59,5 mm 92,2 mm
15 mm 24,5 mm 38,2 mm
20 mm 13,2 mm 20,6 mm
25 mm 8,3 mm 12,9 mm
30 mm 5,7 mm 8,9 mm
35 mm 4,1 mm 6,4 mm
40 mm 3,1 mm 4,9 mm
50 mm 2,0 mm 3,1 mm
60 mm 1,4 mm 2,1 mm
70 mm 1,0 mm 1,6 mm
80 mm 0,8 mm 1,2 mm

**area load 50 kg, panel supported on short edges