QI What is the diameter of the aluminum alloy beam (11 in long) which is subjected to the cyclicalload (1400 lb) at the end (figure below)? The beam must continue for at least 107 cyclesBei120Tool steel100,000 cycle fatigue lifeat 90,000 psi applied stress10080Endurance limit = 60,000 psi6아4아Aluminum alloy2아10410106107108Number of cyclesApplied stress (ksi)

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QI What is the diameter of the aluminum alloy beam (11 in long) which is subjected to the cyclical load (1400 lb) at the end (figure below)? The beam must continue for at least 107 cycles 120 Tool steel 100 100,000 cycle fatigue life at 90,000 psi applied stress 80 Endurance limit = 60,000 psi Aluminum alloy 20 ш 104 105 10 Applied stress (ksi)

QI What is the diameter of the aluminum alloy beam (11 in long) which is subjected to the cyclical load (1400 lb) at the end (figure below)? The beam must continue for at least 107 cycles 120 Tool steel 100 100,000 cycle fatigue life at 90,000 psi applied stress 80 Endurance limit = 60,000 psi Aluminum alloy 20 ш 104 105 10 Applied stress (ksi)

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter9: Deflections Of Beams

Section: Chapter Questions

Problem 9.3.8P: A gold-alloy microbeam attached to a silicon wafer behaves like a cantilever beam subjected to a...

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A hot rolled steel shaft of circular cross-section is subjected to a load that varies from -F to +4F as shown in the below figure. The length of the beam is 141 mm and it has a diameter of 25 mm. Determine the maximum load that the given beam material can withstand for an indefinite life with a factor of safety 1.3. The fatigue stress concentration factor is 1.32. Assume the following values: Yield strength = 430 MN/mm2, endurance stress =276 MN/mm2, ultimate strength = 588 MN/mm2, size factor = 0.84, surface finish factor = 0.89. Use Soderberg relation in your design. Also calculate the mean stress in N/mm2.
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