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ENGG103 (DB225) Materials in Design

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Which of the following is a result of precipitation hardening?
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What does a high Young’s modulus indicate about a material?
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What is the main characteristic of face-centered cubic (FCC) structures?
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What is the relationship between applied stress and fracture toughness for a given crack size?
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Use the graphs provided in the handout to answer the following question. 

For full marks show all calculation handwritten work in your answer booklet. Select the most correct answer

Handout: Figure 3 (a)&(b)

Given data: 

Material: Aluminum 

  • What is the ductility of the material at fracture expressed as a percentage of elongation (%EL)? 

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Which material class generally has the lowest density?
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Use the graphs provided in the handout to answer the following question to the nearest 2 decimal place. 

For full marks show all calculation handwritten work in your answer booklet. Select the most correct answer

Handout: Figure 1 (a)&(b)

Given data: 

Material: Aluminum 

Original length: 50 mm

Cross section dimensions: 2 mm width by 2 mm depth

  • What is the final length of the sample if loaded to F=250 N? 

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What is atomic packing factor (APF)?
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Convert 5000 micrometers to millimeters.
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Which type of material is known for being strong and ductile with high thermal and electrical conductivity?
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