1. 1. Materials used in ship building Doctor : Mahmut Savas
2. 2. It is means of public transport humans and cargo above the water used by human since ancient times to navigate over water bodies and is a modern trade and transport columns. Despite the industry of iron Top density of water and weight and the load of up to tens of thousand of tons, they float above the surface of the water because of the momentum generated by the internal spaces of the vessel filled with air or lighter density of the water liquid, which makes the relative overall density of the ship less Float density of water above the water surface
3. 3. Parts of a ship
4. 4. Some of the causes of the sinking of ships There are two ways of sinking 1- vertical (as happened with the Titanic) 2- Coup ship (on one side)
5. 5. Material issues relating to construction of ship 1 - Strength 2 - Weldability 3 - Toughness 4 - Marine Corrosion 5 - Formability 6 -The Cost
6. 6. Strength There are 3 main types of stress:(Tensile / Tensioning) (Compressive / Compression) (Shear) to handle both loading scenarios (stiffness and ultimate strength, based on length)
7. 7. Weldability Welds in a ship structure are also very critical to its overall strength, durability, and toughness. Even small defects in weldments can create the initiation point for considerably larger cracks and eventual failure
8. 8. Toughness must be able to deform plastically to some extent, and tolerate cracks and flaws while maintaining overall structural integrity
9. 9. Marine Corrosion There are various materials options, design strategies, coating, and cathodic protection technologies available to the designer and shipbuilder
10. 10. Formability formability of the grade impacts toughness, weldability, and strength
11. 11. The Cost Choosing the cheapest material in the construction phase cannot be a considered a success if the decision requires a significant increase in construction labor or creates a maintenance nightmare during the 30 to 50 year
12. 12. The influence of some force ships 0 50 100 150 200 250 300 350 Torsion yield strength Tensile strength Mpa
13. 13. Neglect the Torsion and yield strength because the tensile strength greater
14. 14. Now I will choose the materials of charts M. F. Ashby For ship
15. 15. Strength Density
16. 16. strong plates)/1/2^use Line ( f
17. 17. I know that tensile strength over (340 Mpa).
18. 18. Candidate Materials : CFRP Steels Ti alloys Al alloys Ceremics are quite light and very stiff but their poor tensile strength
19. 19. Strength of materials 0 200 400 600 800 1000 1200 CFRP Steel Ti Alloys AL Alloys Mpa
20. 20. StrengthYoung Modulus
21. 21. use Line (f^2/E) elastic energy storage per unit volume
22. 22. tensile strength over (340 Mpa)
23. 23. Candidate Materials : CFRP Steels Ti alloys Al alloys
24. 24. Young Modulus of material 0 50 100 150 200 Gpa CFRP Steels Ti Alloys Al Alloys
25. 25. StrengthFracture Toughness
26. 26. Leak before breakuse Line (Kc^2/f)
27. 27. tensile strength over (340 Mpa)
28. 28. Candidate Materials : CFRP Steels Ti alloys Al alloys
29. 29. Fracture Toughness of material 0 20 40 60 80 100 120 CFRP Steels Ti Alloys Al Alloys Mpa
30. 30. Strength Relative Cost
31. 31. tensile strength over (340 Mpa)
32. 32. Cost of materials 0 100 200 300 400 500 600 CFRP Steels Ti Alloys Al Alloys
33. 33. Table Comparison of material is best to choose CostKEComparison 600701801100CFRP 501102001200Steels 305069700Al alloy 3001021031000Ti alloy
34. 34. The best metal for ships is steel
35. 35. Any Questions
36. 36. Thank you and have a great day everyone!