DT first test

• What is Kevlar stronger than?

  Steel
• Who developed Kevlar and in what year?

  Stephanie Kwolek in 1965
• What was the purpose of developing Kevlar?

  To create lighter, more flexible, and stronger materials
• What are the properties of Kevlar?

  High performance, super strong, lightweight, flexible, crease resistant, heat resistant
• In what applications is Kevlar commonly used?

  High-performance boat hulls and protective clothing
• Is Kevlar a composite material?

  No, Kevlar is not a composite material
• What happens when Kevlar is woven with other materials?

  It creates an extremely strong, lightweight material
• How many times stronger is Kevlar compared to steel?

  20 times
• What is a common use of Kevlar in Personal Protective Equipment (PPE)?

  To protect people working in hazardous jobs
• What is a composite material?

  • Made from two or more materials
  • Individual materials retain their properties
  • Often lighter and stronger than original materials
• What is the difference between a composite and an alloy?

  Composites retain individual properties, alloys blend together
• What is reinforced concrete an example of?

  A composite material
• What is blockboard made of?

  A central core of softwood strips bonded with adhesive
• What is chipboard made from?

  Small chips of wood bonded with resin
• What is hardboard made from?

  Pulped wood fibres that are pressurized
• What is Medium Density Fibreboard (MDF) made from?

  Very fine wood dust and resin
• What is the purpose of seasoning timber?

  To allow it to fully dry out and stabilize
• What is kiln drying?

  A method of seasoning timber in a controlled environment
• What are the advantages of kiln drying timber?

  Quicker moisture removal and controlled drying
• What are the disadvantages of kiln drying timber?

  It can warp the timber and is more expensive
• Why is it important to store seasoned timber properly?

  To prevent bending and twisting
• What is the triangle loop symbol used for?

  To indicate the type of plastic material
• What is the resin identification code?

  A number indicating the type of plastic used
• What are the advantages of using plastics in product design?

  Lightweight, versatile, and cost-effective
• What are the disadvantages of using plastics in product design?

  Not biodegradable and can contribute to landfill waste
• What is nylon commonly used for?

  Clothing and textiles
• What are the characteristics of low density polyethylene (LDPE)?

  Low tensile and impact strengths
• What are the characteristics of high density polyethylene (HDPE)?

  High tensile strength and resistance to chemicals
• What is polyethylene terephthalate (PET) commonly used for?

  Plastic bottles and containers
• What are the practical applications of composite materials?

  • Used in construction (e.g., CFRP)
  • Used in sports equipment (e.g., bicycles, tennis rackets)
  • Used in protective gear (e.g., Kevlar vests)
• What are the learning objectives regarding composite materials?

  • Understand the term materials
  • Name a range of composite materials
  • Understand the advantages of composite materials
  • Be aware of practical applications of composite materials
• What is the maximum size of larger manufactured boards?

  2440 mm x 1220 mm
• What is the purpose of using manufactured boards?

  To create larger sized boards from smaller sections
• What is the description of Scots Pine timber?

  Straight grained, prone to knots, pale in color, strong, and cheap
• What is the impact of using CFRP in construction materials?

  Higher performance in sports equipment
• What is the significance of Van Phillips' running blades?

  They were the first pair designed for amputees using carbon fiber
• How does CFRP benefit cycling?

  It reduces exertion and improves surface hold
• What is the controversy surrounding carbon fiber technology in sports?

  It raises questions about enhancing athlete performance
• What is the purpose of the matrix in a composite material?

  To perform the binding function
• What is the role of reinforcement in a composite material?

  To provide structure and add strength