What is additive manufacturing and how does it differ from traditional manufacturing?

• Additive manufacturing is a process that only uses metal materials.

• Additive manufacturing requires more manual labor than traditional methods.

• Additive manufacturing is a process that builds objects layer by layer, differing from traditional manufacturing which typically involves subtracting material or forming it.

• Traditional manufacturing is always faster than additive manufacturing.

List three common materials used in additive manufacturing.

• Concrete, asphalt, leather

• Glass, rubber, paper

• Thermoplastics, metals, ceramics

• Wood, fabric, foam

What are the main advantages of additive manufacturing?

• The main advantages of additive manufacturing are design flexibility, reduced material waste, faster prototyping, customization, and the ability to create complex geometries.

• Slower manufacturing process

• Limited design options

• Higher production costs

Describe the process of Fused Deposition Modeling (FDM).

• Fused Deposition Modeling (FDM) is a 3D printing process that builds objects layer by layer by extruding melted thermoplastic material.

• FDM relies on a chemical reaction to harden liquid resin into solid forms.

• FDM is a process that involves layering sheets of paper to create 3D models.

• FDM uses a laser to sinter powdered metal into solid objects.

What is CNC machining and what are its primary applications?

• CNC machining is a manual process used for crafting wooden furniture.

• CNC machining is a technique for painting and decorating surfaces.

• CNC machining is a computer-controlled manufacturing process used for creating precise parts, with primary applications in aerospace, automotive, medical devices, and custom fabrication.

• CNC machining is primarily used for cooking and food preparation.

Explain the difference between subtractive and additive manufacturing.

• Additive manufacturing adds material; subtractive manufacturing removes material.

• Additive manufacturing removes material; subtractive manufacturing adds material.

• Additive manufacturing is faster than subtractive manufacturing.

• Both processes involve adding layers of material.

What are the key components of a CNC machine?

• Control unit, drive system, spindle, worktable, feedback system

• Laser cutter, cooling system, conveyor belt

• Drill press, lathe, milling cutter

• Power supply, control panel, safety guard

How does a CNC machine interpret G-code?

• A CNC machine interprets G-code by reading commands that dictate movements and actions.

• A CNC machine uses G-code to create 3D models.

• CNC machines interpret G-code by converting it into audio signals.

• G-code is a programming language that only works with 3D printers.

What factors should be considered when selecting materials for manufacturing?

• Brand reputation

• Packaging design

• Mechanical properties, thermal properties, chemical resistance, cost, availability, environmental impact, manufacturability.

• Color variety

What is the role of tensile strength in material selection?

• Tensile strength is only relevant for electrical conductivity.

• Tensile strength is used to measure thermal resistance.

• Tensile strength helps in selecting materials that can withstand expected loads and stresses.

• Tensile strength determines the color of the material.