Solution

PROBLEMS _CH8_ 8.12, 8.20, 8.33 ASSIGNMENT CHAPTER 8 8.12 Following is tabulated data that were gathered from a serial of Charpy match tests on a ductile moult iron.

|Temperature (°C) | concussion Energy (J) | |25 |124 | |50 |123 | |75 |cxv | |85 |100 | |100 |73 | |110 |52 | | one hundred twenty-five |26 | |150 |9 | |175 |6 | (a) bandage the data as impact readiness versus temperature. (b) Determine a ductile-to-brittle variety temperature as that temperature agree to the average of the uttermost and nominal impact energies. (c) Determine a ductile-to-brittle transition temperature as that temperature at which the im pact energy is 80 J. Solution (a) The ! game of impact energy versus temperature is shown below. [pic] (b) The average of the maximum and minimum impact energies from the data is [pic] As indicated on the plot by the one company of dashed lines, the ductile-to-brittle transition temperature match to this criterion is about 105°C. (c) Also, as noted on the plot by the other set of dashed lines, the ductile-to-brittle transition temperature for an impact energy of 80 J is about 95°C. PROBLEM 8.20 8.20 The fatigue data for a ductile quarter iron are given as follows: |Stress premium |Cycles to Failure | |[MPa (ksi)] |...If you want to get a full essay, evidence it on our website: BestEssayCheap.com

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