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Maurizio Pizzamiglio I MATERIALI NEL SETTORE AERONAUTICO.

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Presentazione sul tema: "Maurizio Pizzamiglio I MATERIALI NEL SETTORE AERONAUTICO."— Transcript della presentazione:

1 Maurizio Pizzamiglio I MATERIALI NEL SETTORE AERONAUTICO

2 Come si progetta

3 - Aerodinamici -da manovra (simmetrici- asimmetrici) - da raffiche (verticali, laterali) - Propulsivi - spinta - coppie - CARICHI d'atterraggio -su portaerei o simili -su ruota o pattino -su acqua -d'arresto - Di decollo - normale - catapulta - con razzi - Speciali - cabina pressurizzata - da traino velivolo - da sollevamento velivolo Carichi

4 Missione tipica

5 5 D C E GF H A S n 1 V n1n1 n2n2 n4n4 n3n3 VaVa V sr VsVs VdVd Vn e 66 fps 50 fps 25 fps 50 fps 66 fps Diagramma di manovra e di raffica Diagramma di manovra e di raffica

6 Carichi

7

8 Curva di Wöhler

9 STRESS-STRAIN curves MATERIAL INTRODUCTION The deformation and fracture response of a material to externally applied forces are affected by many factors: metallurgy alloying crystal formation heat-treatments environment No successful theory for prediction of the properties of materials (in the future too) The significant properties of materials for structural design purposes are determined experimentally Tension and compression coupon tests provide the simplest information on mechanical properties. Experimental data are recorded on

10 Elemento Lega Cu1,64,56,04,454,00,28 Mg2,51,5-0,50 1,0 Mn-0,650,30,800,70- Zn5, Si---0,85-0,60 Cr0, Ti-----0,15 max. V--0,10--- Zr--0,15--- MaterialeA%A% tr Kp/mm 2 cs Kp/mm 2 Ec Kp/mm 2 0,7 Kp/mm 2 n R Kp/mm T6 [ estrusi t <= 12 mm ]742,237, ,318,524, T6 [ forgiati t <=100 mm ]743,636, ,82027, T3 [Piastre e lamiere t <= 6 mm ]1245,728, ,411,528, T4 [ Piastre e lamiere t <= 12 mm ]1245,726, ,815,628, T3 [ Lamiere plastate 0,5 < t < 1,6 mm ]1242,226, ,11226, T6 Lamiere placcate e piastre t > 1,6 mm843,634, ,61126,0 Lamiere placcate e piastre t < 1,6 mm842,233, ,110,625, T81 [ Lamiere placcate t <= 1,6 mm ]543,638, ,411,226, T6 [ Lamiere t <= 6 mm ]1029,624, ,63117,2 7 Lamiere e piastre t <= 12 mm753,547, ,39,232,4 0 Estrusi t <= 6 mm752,849, ,716,630,2 7 Stampati t <= 50 mm750,040, ,215,231,7 5 Forgiati a mano Area <= 10 Cm 2 450,744, ,92531,7 - Lamiere placcate e piastre t <= 12 mm849,345, ,419,531,7 T T6 Forgiati a mano t <= 150 mm447,141, ,92627,3

11 WING &STABILIZER Spar Rib Skin Mechanisms & Fittings FUSELAGE Floor Assemblies Frames Floor Cross Beam Seat Tracks Bulkhead Baggage Door Access Doors Keel Beam Canopy Beams Seat Assemblies Windows Frames COCKPIT Window Frames Dashboard Center Pedestral & Sides Engine Mount Assy Engine Attach Pylon Fitting Wing Attach Pylon Fitting Titanium Ribs Panels Engine Pylon Assemblies SYSTEMS Ventilation Impeller Fuel Pipe Connectors LANDING GEAR Torque Links Towing Fitting Doors Goose Necks Fitting assemblies Nacelle & Thrust reverser & Engine Ring Beams & Frames Equipments Suspension Case Blades Flow Splitter DOORS Structure Mechanisms Hinges Fittings

12 Frame 1 – A380 8ft (2500mm) Frame 42 – A320 13ft (4000mm) Frame 16 – A380 Nose Landing Gear Box 16ft (4900mm) 5ft (1500mm) Back to menu

13 Floor Assy T15 – A330 PAX Floor Assy T15 – A330 GMF 20ft (6000mm) 8ft (2500mm) Floor Assy Section 12 A350 XWB (Design and built contract) 12.16ft (3800mm ) 16.22ft (5070mm )

14 Back to menu Wing Spar - G650 Outboard Rear Spar G650 36ft long Outboard Front Spar G650 42ft long Outboard Aft Spar - G650

15 Wing Skin Legacy 450 Vertical Stabilizer Skin FALCON 900/ ft (9000mm) Wing skin – FALCON 900/2000 Wing skin Machining + Forming Elevator Panel Falcon 900/ ft (3650mm) Machining + Forming Attachment Fitting ATR 42/72

16 Flap Track Titanium - RAIL ERJ190 Flap Track Titanium - RAIL LEGACY 450 EMBRAER 43x16 (1100mm x 400mm)

17 Back to menu Titanium Panel – A350

18 Compositi

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23 Comportamento a fatica

24 Problematica

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