Researching Material Properties

Methods to Research Characteristics and Properties of Materials

Why Research Material Properties?

Material selection is one of the most consequential decisions a designer makes. The wrong material — however aesthetically appropriate — can result in product failure, safety risks, sustainability problems, or production challenges.

Researching material properties involves both secondary research (reading existing knowledge) and primary research (hands-on experimentation).

Material Properties to Investigate

Mechanical properties:
- Tensile strength (resistance to pulling apart)
- Compressive strength (resistance to crushing)
- Hardness (resistance to surface scratching/indentation)
- Toughness (resistance to impact/fracture)
- Flexibility/stiffness (modulus of elasticity)
- Fatigue resistance (performance under repeated loading)

Physical properties:
- Density (mass per unit volume — affects weight of product)
- Thermal conductivity (heat transfer — relevant for handles, insulation)
- Electrical conductivity
- Optical properties (transparency, opacity, reflectivity)

Aesthetic properties:
- Colour, grain pattern, texture
- Surface finish potential (how well it takes polish, paint, dye)
- Lustre and sheen

Workability properties:
- How easily can it be cut, shaped, bent, joined?
- Does it splinter, delaminate, or crack under tooling?
- What tools and processes are required?

Sustainability properties:
- Source (renewable, recycled, virgin)
- Biodegradability or recyclability
- Embodied energy
- Toxicity (processing, use, end-of-life)

Secondary Research Methods

• Material data sheets (MSDS/SDS): Manufacturer-supplied documents detailing composition, properties, and safety information
• Standards documents: Australian and ISO standards specify minimum property requirements for materials in defined applications
• Product catalogues and supplier specifications: Detailed property tables from material suppliers
• Academic texts and design references: Detailed property data and case studies
• Online material databases: (e.g. MatWeb, CES EduPack) — searchable databases of material properties

Primary Research: Experimentation and Trial Processes

Cutting and machining trials
- Cut samples with available tools; note ease of cutting, quality of cut edge, tendency to chip or splinter
- Compare different materials side by side

Bending and forming tests
- Bend samples to determine minimum bend radius without cracking
- Test formability with heat (thermoplastics); cold-bending capacity (metal)

Joining trials
- Test adhesive bonds, mechanical fasteners, and joinery methods
- Load test joints to failure; compare strength

Finishing trials
- Apply candidate finishes (paint, oil, varnish, dye) to sample pieces
- Assess adhesion, colour, durability, and user feel

Wear and durability tests
- Simulate use conditions: abrasion, moisture, UV exposure, impact
- Compare results across candidate materials

Recording Experimentation Results

• Photograph samples before and after testing
• Record observations in a structured table (material, test, result, conclusion)
• Annotate samples with reference numbers matching the record
• Compare results against evaluation criteria requirements

KEY TAKEAWAY: Material selection must be based on evidence. Secondary research provides baseline data; experimentation validates performance in the specific production and use context of the design.

EXAM TIP: Distinguish between secondary research (existing knowledge) and primary experimentation (your own tests). VCAA rewards evidence that you have trialled materials, not just researched them theoretically.