18ASC104J
AIRCRAFT MATERIALS AND
PRODUCTION TECHNIQUES
Course Learning Outcome:
• To Identify the Materials and Utilize its Mechanical
Properties
• Analyze the Application of materials in different
aircraft components
• Identify different casting techniques
• Analyze machining techniques
• Analyze forming Techniques
• Identify different treatments to strengthen materials
, Overview
• Unit 1 - Introduction to Materials & Mechanical properties
o Classification of A/C materials and Materials Used in A/C components
o Fixed Wing A/C Structures, Helicopter and Space shuttle Structures, MAV/UAV
o Super Alloys, Intermetallics, Ni and Ti aluminide, Advanced Ceramics
o Application of Composites: FRP, Carbon/Carbon composites, Plastics/Rubber
o Emerging Trends in Aerospace: Introduction to Smart materials, SMA
• Unit 2 - Heat Treatment Process
o Process, Principle, Stages and Types
o Applications: Carbon Steel, Aluminium Alloy, Titanium Alloy, Magnesium Alloy
o Case Hardening: Procedure, Stress relieving and Protective Coating
• Unit 3 - Casting Process and Welding
o Sand Casting, Special/Expandable/Shell mold Casting, Investment Casting, Die Casting and their
Defects
o Gas/Arc welding, Electric Resistance welding, Laser/Electron Beam Welding and their Defects
• Unit 4 - Mechanical working of Materials
o Hot/Cold working, Forging, Extrusion, Rolling, Drawing and their Types/Defects
o Sheet Metal Operations and Tools
• Unit 5 - Machining Process
o Machines: Lathe, Drilling, Shaper, Slotter, Grinding, Milling
o Working, Operations, Tools and Types
, Unit 1: Materials & Mechanical Properties
• Materials are the driving force behind the technological
revolutions and are the key ingredients for manufacturing.
• Properties :
o Physical Properties (Size, Colour, Density)
o Optical properties (Refractive index, Birefringence)
o Thermal properties (Conductivity, Diffusivity, Glass
Transition Temp)
o Electrical properties (Resistivity, Conductivity)
o Mechanical properties
o Strength
o Modulus
o Toughness
o Hardness
• To understand the behaviour of the material when subjected to a force which causes
deformation; Analyze the ‘stress-strain diagram’.
, • Brittleness: Ability of a material to break or shatter without significant
deformation under stress. Examples: Glass, Concrete, Cast iron, Ceramics etc.
• Ductility: Ability of a material to plastically deform under tensile load (%
elongation)
• Malleability: Ability of the material to be flattened into thin sheets under
applications of heavy compressive forces without cracking
• Toughness: Ability of a material to absorb energy (or withstand shock) and
plastically deform without fracturing
• Resilience: Ability of a material to absorb energy when it is deformed elastically
(MPa); combination of strength and elasticity
• Hardness: Ability to withstand surface indentation and scratching
• Fatigue strength: Maximum stress that can be applied for a certain number of
cycles (repeated loading) without fracture
AIRCRAFT MATERIALS AND
PRODUCTION TECHNIQUES
Course Learning Outcome:
• To Identify the Materials and Utilize its Mechanical
Properties
• Analyze the Application of materials in different
aircraft components
• Identify different casting techniques
• Analyze machining techniques
• Analyze forming Techniques
• Identify different treatments to strengthen materials
, Overview
• Unit 1 - Introduction to Materials & Mechanical properties
o Classification of A/C materials and Materials Used in A/C components
o Fixed Wing A/C Structures, Helicopter and Space shuttle Structures, MAV/UAV
o Super Alloys, Intermetallics, Ni and Ti aluminide, Advanced Ceramics
o Application of Composites: FRP, Carbon/Carbon composites, Plastics/Rubber
o Emerging Trends in Aerospace: Introduction to Smart materials, SMA
• Unit 2 - Heat Treatment Process
o Process, Principle, Stages and Types
o Applications: Carbon Steel, Aluminium Alloy, Titanium Alloy, Magnesium Alloy
o Case Hardening: Procedure, Stress relieving and Protective Coating
• Unit 3 - Casting Process and Welding
o Sand Casting, Special/Expandable/Shell mold Casting, Investment Casting, Die Casting and their
Defects
o Gas/Arc welding, Electric Resistance welding, Laser/Electron Beam Welding and their Defects
• Unit 4 - Mechanical working of Materials
o Hot/Cold working, Forging, Extrusion, Rolling, Drawing and their Types/Defects
o Sheet Metal Operations and Tools
• Unit 5 - Machining Process
o Machines: Lathe, Drilling, Shaper, Slotter, Grinding, Milling
o Working, Operations, Tools and Types
, Unit 1: Materials & Mechanical Properties
• Materials are the driving force behind the technological
revolutions and are the key ingredients for manufacturing.
• Properties :
o Physical Properties (Size, Colour, Density)
o Optical properties (Refractive index, Birefringence)
o Thermal properties (Conductivity, Diffusivity, Glass
Transition Temp)
o Electrical properties (Resistivity, Conductivity)
o Mechanical properties
o Strength
o Modulus
o Toughness
o Hardness
• To understand the behaviour of the material when subjected to a force which causes
deformation; Analyze the ‘stress-strain diagram’.
, • Brittleness: Ability of a material to break or shatter without significant
deformation under stress. Examples: Glass, Concrete, Cast iron, Ceramics etc.
• Ductility: Ability of a material to plastically deform under tensile load (%
elongation)
• Malleability: Ability of the material to be flattened into thin sheets under
applications of heavy compressive forces without cracking
• Toughness: Ability of a material to absorb energy (or withstand shock) and
plastically deform without fracturing
• Resilience: Ability of a material to absorb energy when it is deformed elastically
(MPa); combination of strength and elasticity
• Hardness: Ability to withstand surface indentation and scratching
• Fatigue strength: Maximum stress that can be applied for a certain number of
cycles (repeated loading) without fracture
