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ENGG103 (DB225) Materials in Design
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Ceramic materials display very high
In crystalline ceramics
In non-crystalline ceramics
Use the graphs provided in the handout to answer the following question. (Select the option that is closest to your answer).
For full marks show all calculation handwritten work in your answer booklet.
Handout: Figure 4
Given data:
Material: 2014-T6 Aluminum
Ultimate tensile strength = 414 MPa
Stress range for rotating part: Min stress = -200 MPa, Max stress = 300 MPa
Rotation: 6 Hz ( 1 Hz = 1 cycle per second)
How many hours would the part be expected to
survive before failing due to fatigue
?