Aircraft Structure Quiz Reviewer

Aircraft Structure Demands

• Aircraft structures must balance three competing demands: utmost safety, lightweight durability, and cost-effectiveness.

Properties of Materials

Physical Properties

• Density
• Melting point
• Conductivity
• Thermal expansion

Mechanical Properties

• Strength: resistance to force
• Hardness: resistance to scratching or indentation
• Brittleness: tendency to break without significant bending
• Toughness: ability to absorb impact
• Plasticity: permanent deformation under small forces
• Elasticity: ability to return to original shape after a load is removed
• Stiffness: resistance to bending under pressure
• Malleability: ability to be flattened into thin sheets
• Ductility: ability to be drawn into thin wires
• Compressive Strength: ability to withstand pushing or squeezing forces
• Tensile Strength: ability to withstand pulling or stretching forces
• Durability: resistance to wear, tear, weather, and corrosion

Common Material Used

• Material Properties: inherent to the material itself (e.g., strength, weight) and independent of its shape
• Structural Properties: depend on both the material and the design (shape) of the structure
• Manufacturing Processes: influenced by the material's properties

Interconnected Aspects

• Changing one aspect can affect the others: material, design, and manufacturing processes

Materials and Their Characteristics

Metal Alloys

• Exceptional strength in both pulling and pushing forces
• Examples: Aluminum Alloys, Steel Alloys, Titanium Alloys

Composites

• Combine multiple materials to create something greater than the sum of its parts
• Examples: Glass Fiber Composites, Carbon Fiber Composites, Aramid and Kevlar Composites, Fiber Metal Laminates (FMLs)

Aircraft Structure Demands

• Aircraft structures must balance three competing demands: utmost safety, lightweight durability, and cost-effectiveness.

Properties of Materials

Physical Properties

• Density
• Melting point
• Conductivity
• Thermal expansion

Mechanical Properties

• Strength: resistance to force
• Hardness: resistance to scratching or indentation
• Brittleness: tendency to break without significant bending
• Toughness: ability to absorb impact
• Plasticity: permanent deformation under small forces
• Elasticity: ability to return to original shape after a load is removed
• Stiffness: resistance to bending under pressure
• Malleability: ability to be flattened into thin sheets
• Ductility: ability to be drawn into thin wires
• Compressive Strength: ability to withstand pushing or squeezing forces
• Tensile Strength: ability to withstand pulling or stretching forces
• Durability: resistance to wear, tear, weather, and corrosion

Common Material Used

• Material Properties: inherent to the material itself (e.g., strength, weight) and independent of its shape
• Structural Properties: depend on both the material and the design (shape) of the structure
• Manufacturing Processes: influenced by the material's properties

Interconnected Aspects

• Changing one aspect can affect the others: material, design, and manufacturing processes

Materials and Their Characteristics

Metal Alloys

• Exceptional strength in both pulling and pushing forces
• Examples: Aluminum Alloys, Steel Alloys, Titanium Alloys

Composites

• Combine multiple materials to create something greater than the sum of its parts
• Examples: Glass Fiber Composites, Carbon Fiber Composites, Aramid and Kevlar Composites, Fiber Metal Laminates (FMLs)

This quiz reviews the competing demands of aircraft structures, including safety, lightweight durability, and cost-effectiveness, as well as the physical and mechanical properties of materials used in their construction.