material science :need in 2 hours
- Draw a bubble chart in Metric units showing tensile strength on X-axis and hardness (HV) on Y-axis. How does the hardness of ceramics, metals and polymers compare? Do you see any correlation between tensile strength and hardness? If yes, describe it in words.
- Find materials where the following property requirements are met simultaneously:
(a) Minimum hardness of 300 HV
(b) Fracture toughness in excess of 100 MPa (m)0.5
(c) % Elongation no less than 20%
List density and cost of these materials in metric units.
3 Draw a bubble chart with density as X-axis and elastic limit as Y-axis in metric units. Using limit and intersect functions show the materials on the bubble chart that meet the following characteristics simultaneously:
(a) Production energy no higher that 25 MJ/kg
(b) CO2 production limited to 2 kg/kg
(c) Recyclable materials
Edit this bubble chart by changing the Y-axis to price. Which of the above materials is the cheapest? Which is the most expensive?
- A material is required for tire wheels. Documents what you would judge to be the design-limiting properties. Name three candidate materials and reasons.
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