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Unformatted text preview: 1. 12 MPa 2. 278 MPa 3. 350 MPa 4. 393 MPa 5. 500 MPa 6. Some other answer 7. I don't know/ I don't understand M19 Concept Question 3 Comment on your level of confidence to explain the phenomena and underlying mechanisms behind the following ideas to freshmen in 16.00? 1) Metals tend to be tougher than glasses or ceramics . 2) In choosing an alloy we often have to trade off (compromise) between strength and toughness. 3) The difference between stiffness, strength and toughness (or fracture toughness) for a material 1. Supremely confident 2. Somewhat confident 3. Could do it on a good day 4. Uncertain 5. Utterly confused...
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- Fall '05