Materials and Components

WJEC-CBAC

vocational

This subtopic covers the identification and selection of standard components such as fasteners, bearings, seals, and springs, and their appropriate applications in engineering assembly. It also examines the principles and practices of joining methods including mechanical fastening, chemical bonding, and thermal processes like welding, enabling students to make informed decisions in design and manufacture.

Objectives

Exam Tips

Pitfalls

Key Terms

Mark Points

What You Need to Demonstrate

Key skills and knowledge for this topic

Award credit for accurately naming and describing the function of standard components (e.g., bolts, rivets, circlips) and citing appropriate applications.
Expect evidence of evaluating joining methods based on material compatibility, joint strength, and service conditions.
Look for clear diagrams or examples demonstrating understanding of mechanical (e.g., threaded fasteners), chemical (e.g., adhesives), and thermal (e.g., welding, soldering) joining.

Marking Points

Key points examiners look for in your answers

Award credit for accurately naming and describing the function of standard components (e.g., bolts, rivets, circlips) and citing appropriate applications.
Expect evidence of evaluating joining methods based on material compatibility, joint strength, and service conditions.
Look for clear diagrams or examples demonstrating understanding of mechanical (e.g., threaded fasteners), chemical (e.g., adhesives), and thermal (e.g., welding, soldering) joining.

Examiner Tips

Expert advice for maximising your marks

💡When asked to justify a joining method, always refer to the specific properties of the materials and the operational demands of the component.
💡Use correct technical terminology: refer to 'tensile strength' rather than 'strength', and 'corrosion resistance' rather than 'doesn't rust'.
💡In design questions, sketch and label assembly methods clearly to demonstrate practical understanding, even if the sketch is simple.

Common Mistakes

Pitfalls to avoid in your exam answers

Confusing the applications of similar components, such as mixing up the use of washers (flat vs spring) or screw types.
Overlooking the importance of surface preparation when using adhesives or ignoring thermal expansion effects in welded joints.
Failing to distinguish between temporary and permanent joining methods, leading to inappropriate selection for maintenance or disassembly requirements.

Key Terminology

Essential terms to know

Standardisation

Temporary vs permanent joints

Ready to test yourself?

Practice questions tailored to this topic

Materials and Components

What You Need to Demonstrate

Marking Points

Examiner Tips

Common Mistakes

Key Terminology

Ready to test yourself?

Related Topics in WJEC-CBAC vocational Manufacturing & Engineering

WJEC Eduqas Level 3 Advanced Subsidiary GCE in Design and Technology (Fashion and Textiles/Product Design) - Core Content

WJEC Level 3 Advanced Subsidiary GCE in Design and Technology - Core Content

Components and Fixings

Design Contexts and Influences