MSSM. Nyborg, August 28 st Bengt Sangberg Marine Chief Executive. - Copyright Bureau Veritas

Transcription

1 MSSM Nyborg, August 28 st 2014 Bengt Sangberg Marine Chief Executive

2 2

3 Composite materials are a mix several material: Reinforcement Matrix matrix (resin) reinforcement (fibres) Eventually other materials Composite Considered as a heterogeneous material with anisotropic properties Material properties can be adapted according to loads = weight saving 3

4 Main types of raw materials: Resin: polyester, vinylester, epoxy Fibres: glass, carbon, para-aramid, others Reinforcement fabrics: mat, unidirectional, roving, combined fabrics Core materials: foam, balsa wood, honeycomb. Prepregs: Pre-impregnated Fabrics with resins Structural adhesives 4

5 2 main families: Monolithic : assembly of layers Sandwich asssembly by bonding of a core and 2 monolithics skins 5

6 Specificities of composites structure versus / metallic structure : Material elaborated at same time than structure is built. Different type of process : Hand lay-up, Vacuum assisted process, Infusion, Prepregs. Material final characteristics depends on laminates scantlings but also on manufacturing Main composites advantages vs metallic materials Unlimited choice of material High range of mechanical characteristics Light material Absence of corrosion and good ageing behaviour in marine environment Non magnetic property / low thermal conductivity / high electrical resistivity Transparency to electromagnetic waves / low attenuation of acoustic waves 6

7 Composites applications on BV classed vessels : Ships Hull : currently any type up to +/- 50m: Yachts Fishing vessels HSC OPV Crew boats Pilot /patrol vessels Wind farm service vessels Special service vessels Passenger vessels Rescue life boats 7

8 Composites applications on BV classed vessels : Superstructures/ decks Watertight doors, hatches, Tanks, Masts, Rudders, rudder stocks, fins, ESD Hand rails, gratings Waterjet tunnels, propellers, shafts line Ship repair (SPS system, copatch project..) 8

9 ComposeIT Based on NR546 Rules (layer per layer calculation methodology) Layer by layer analysis with rules safety coefficients Monolithic/sandwich panel + stiffener analysis 9

10 MARS Characteristics of a composite midship section (Strake definition: Thick, E) Hull global girder strains in plates & stiffeners Post treatment done under Compose IT tools 10

11 STEEL 3D beam model with composite beams having specific Young and Shear moduli Post treatment using Bending moments and loads under Compose IT tools Not a Rule tools FEMAP / NASTRAN Software used for Finite Element Analysis Link for post treatment with Compose IT Under development 11

12 NR 396 : Rules for the Classification of High Speed Craft February 2002 Application : HSC and light ship Steel, aluminium and composite materials Old theoretical approach: composite considered as an homogeneous material NR 500 : Rules for The Classification and the Certification of Yachts March 2012 Application: Motor and sailing yachts L 100 m, charter and private yachts Steel, aluminium and composite materials First Rules using the new theoretical approach (layer by layer analysis) Definition of loading cases and Rules safety coefficient NR 546 : Hull in Composite Materials and Plywood, Material Approval, design Principles, Construction and Survey March 2012 This Rule Note is the reference rule for ships built in composite materials Introduction of the new theoretical approach: stresses analysis in each layer Define general requirements for : Raw materials for laminates, Calculation principles (panels and stiffeners), Hull construction & survey, Mechanical tests. 12

13 NI 590 : Rudders in Composite Material September 2013 Guidance note applying to rudder stock, rudder blade and flap, rudder trunk and rudder exepted for yachts Horn made totally or partially in composite Methodology to assess scantling of rudders Requirements for the manufacture inspections and tests NI 603 : Current and tidal turbines April 2013 This Guidance Note gives requirements and recommendations for the assessment of fully submerged current and tidal turbines installed on the seabed Design loads given Implementation of Fatigue on composite materials (blade) 13

14 NR 600 : Hull Structure and Arrangement for the Classification of Cargo Ships less than 65m and Non Cargo ships less than 90m to be issued in July 2014 New Rules in development, applicable to all ships L 65/90 m (except yacht, HSC and light ship) Steel, aluminium and composite materials (layer by layer analysis) Definition of loading cases and adapted Rules safety coefficients NI 613 : Adhesive Joints & Patch Repair to be issued in July 2014 Guidance note in development applying to multimaterials adhesive joints Adhesive composite/composite, metallic/metallic, metallic/composite 14

15 UNDER DEVELOPMENT NR467 update for OPV Composite material implemented for OPV (refer to NR600 for Hull structure) NI Shaft Line Guidance note for FRP shaft line Implementation of fatigue, buckling, critical speed. Use of Compose It for checking. 15

16 COMING DEVELOPMENTS Propeller in composites, Masts and rigging Composite repair for marine & offshore vessel Implementation of Fatigue. 16

17 Kemikaliedampe fra bilmærker der sælges i USA: 17

18 Emissioner ved ekstrudering af folie Acrylonitril Methyl propenoinsyre, methyl ester Toluen Ethenyl cyclohexen Xylen isomere Styren Kulbrinte (C8-C10) Benzen, propyl isomere a-methylstyrene Ethenyldimethylcyclohexen Acetophenon Propenylbenzen, isomere Kulbrinte (C10-C12) 18

19 Farer ved produktion af kompositprodukter Støvpartikler som kan irritere luftvejene Emissioner Smøremidler og væsker der kan trænge igennem huden Beskyttelsesforanstaltninger: Udsugning ved kilden f.eks. Centrale eller mobile vakuumsystemer Beskyttelsesdragter Event. iltmasker 19

20 Eksempel LM Wind Power. Arbejdstilsynets & Arbejdsskadestyrelsens rapport fra 2011 Mulige farer for sundhed forbundet med polyesterstøbning Styren Butanonperoxid Acetone Glasfiber Støv 20

21 Eksempel Emissioner ved ekstrudering af folie Acrylonitril Methyl propenoinsyre, methyl ester Toluen Ethenyl cyclohexen Xylen isomere Styren Kulbrinte (C8-C10) Benzen, propyl isomere a-methylstyrene Ethenyldimethylcyclohexen Acetophenon Propenylbenzen, isomere Kulbrinte (C10-C12) 21

22 Kemikaliedampe fra bilmærker der sælges i USA: 22

23 ISO standarder 9001 (Kvalitetssikring) (Miljøcertificering) (Arbejdsmiljøcertificering) 23

24