Design and Technology: Engineering Design (WJEC)

Engineering Design Process

Sequential steps from problem identification to solution evaluation.

SCAMPER

Technique for idea generation: Substitute, Combine, Adapt, Modify, Put to another use, Eliminate, Reverse.

Decision Matrices

Tool to evaluate and select the best design option.

Prototype

A preliminary model used for testing and feedback.

Metals

Materials like steel and aluminum with distinct properties.

Thermoplastics

Plastics like ABS with recyclability and flexibility.

Thermosetting plastics

Plastics like epoxy with heat resistance and rigidity.

Composites

Materials like fiberglass with high strength-to-weight ratio.

Wood Properties

Differences in aesthetics and workability between hardwood and softwood.

Mechanical Properties

Characteristics like tensile strength and density of materials.

Types of Motion

Linear, rotary, reciprocating, and oscillating motion.

Levers

Simple machines with classes and mechanical advantage.

Linkages

Mechanical connections like push-pull mechanisms.

Cams and Followers

Components for converting motion profiles.

Gears

Mechanical components for transmitting motion.

Pulleys

Simple machines for lifting loads with mechanical advantage.

Orthographic Projection

Drawing technique showing multiple views of an object.

Isometric Drawing

Creating 3D representations on a 2D plane.

CAD

Computer software for designing and modeling.

Manufacturing Processes

Methods like cutting, drilling, milling, CNC machining, 3D printing.

Workshop Safety

Protocols for using tools and equipment safely.

Prototyping Techniques

Methods for building models using various materials.

Testing Engineering Solutions

Methods like destructive testing and functional testing.

Sustainable Design

Design principles to reduce environmental impact.

Ethical Considerations

Responsibility to society, fair trade, and social impact.