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Composite materials – possibilities in the scaffold industry

Composite materials – possibilities in the scaffold industry. Carl Østervig M.Sc. Mech. Eng, CTO & Partner Nordic Platform P/S Denmark. Who are we?. A relatively new company but with many years of experience in: Scaffold industry Composite materials

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Composite materials – possibilities in the scaffold industry

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  1. Composite materials – possibilities in the scaffold industry Carl Østervig M.Sc. Mech. Eng, CTO & Partner Nordic Platform P/S Denmark

  2. Who are we? • A relatively new company but with • many years of experience in: • Scaffold industry • Composite materials • HQ in Søndersø, DK (PUR resin pultrusion) • 2 factories in Guandong provins China (PE/VE pultrusion)

  3. What is a composite material?(here limited to thermohardening resins)ResinsPolyesterVinylesterEpoxyPolyurethaneReinforcementsGlass fibersCarbon fibersAdditivesRelease agents

  4. Manufacturing processesCompresion Moulding Hand lay upPultrusion Filament Winding

  5. Manufacturing processesPultrusion

  6. Examples, passenger aircraft

  7. Examples, wind turbine blades

  8. Some advantages by using GRP • Low weight to strength ratio • Easy handling • Damage tolerant • Corrosion resistance • UV, alkali and acid resistant • High design flexibility • Cost effective • Flame resistant • Custom colors without subsequent paint • Electrically non conductive • Water absorption very low • Long service life • Risc of theft very low • Recycling possibilities

  9. Some challenges by using GRP • Requires expert knowledge to obtain near optimal products • Market conservatism • Relatively new to certifying bodies • Relatively high production costs at sub suppliers in EU

  10. Finite element analysisExample: La Bank

  11. Finite element analysisExample: 3000x600mm platform

  12. Some tests Tests in Germany Tests in China

  13. Some tests Tests in Sweden Ceritificate SC 1087-13

  14. Some tests Tests in Norway

  15. Some tests Tests in Denmark

  16. Mechanical propertiesTensile tests with strain gauge measurements

  17. Load tests 2.17x0.49 m deckAcc to EN 12811 Load class 6 requirements

  18. Environmental resistance tests • HCl • Tests with 30% HCl causes no damage • CaOH2 • Tests with saturated solution causes no damage • UV • Tests acc. to ISO 4892 500 hours exposure causes no damage • or decrease in mechanical properties • Tests continues for 2000 hours exposure • Heat. • Exposure 500 hours at +80 oC exposure causes no damage • or decrease in mechanical properties • Tests continues for 2000 hours exposure

  19. ConclusionUse of composite materials in scaffold industry has a very large potential Optimal design requires expert knowledge

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