The plate shown below, is fabricated from steel with an SUT = 540 MPa, Sy = 415 MPa and a machined finish. Assume 95% reliability, and operating temperature of 250 °C. The plate is loaded axially with a force F, that varies as shown below: 80 mm- 40 mm 3 mm F: From 0 to Fo a) Sketch the o vs. t plot and find dem and dea. Write them as a function of Fo. b) Sketch the appropriate material fatigue failure diagram. Be sure to include numerical values, units, and label axes.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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3. The plate shown below, is fabricated from steel with an SUT = 540 MPa, Sy = 415 MPa and a
machined finish. Assume 95% reliability, and operating temperature of 250 °C.
The plate is loaded axially with a force F, that varies as shown below:
80 mm
40 mm
%4
3mm
F: From 0 to Fo
a) Sketch the a vs. t plot and find dem and Jea. Write them as a function of Fo.
b) Sketch the appropriate material fatigue failure diagram. Be sure to include numerical values,
units, and label axes.
c) If it is desired to have a safety factor of 2, what is the loading Fo such that the plate has
infinite life? Assume the loads increase proportionally.
Transcribed Image Text:3. The plate shown below, is fabricated from steel with an SUT = 540 MPa, Sy = 415 MPa and a machined finish. Assume 95% reliability, and operating temperature of 250 °C. The plate is loaded axially with a force F, that varies as shown below: 80 mm 40 mm %4 3mm F: From 0 to Fo a) Sketch the a vs. t plot and find dem and Jea. Write them as a function of Fo. b) Sketch the appropriate material fatigue failure diagram. Be sure to include numerical values, units, and label axes. c) If it is desired to have a safety factor of 2, what is the loading Fo such that the plate has infinite life? Assume the loads increase proportionally.
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