Design Questions Set 32:
The ratio of the leg of the weld and the thickness of the plate in a double parallel fillet weld is:
Solution:
Stress concentration in cyclic loading is more serious for which type of material?
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What is the most probable mode of failure for a ductile material under static loading?
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A spur gear transmits 20 kW of power at a pitch line velocity of 20 m/s. The driving gear has a diameter of 2 meters. Calculate the torque transmitted.
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If the nominal diameter of the bolt used is 30 mm, then find the radial distance between the outer diameter of the flange and the pitch circle diameter of the studs.
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For spot welding of a 1mm thick sheet with a current flow time of 0.2 s, the heat generated is 1000J. If the effective resistance is 200μΩ, find the current required in amperes (A).
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Where is pre-tensioning of a bolted joint used?
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For steel under completely reversed stress loading, the factor corresponding to Sf = 103 is 0.50 and the ultimate tensile strength (Sut) is 90 kpsi. Estimate the endurance limit.
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The shoulder provided on the shaft near the bearing is to prevent which of the following?
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The expected life of a bearing subjected to a load of 4,900 N, revolving at 2,000 RPM is 12,000 hours. What will be the expected life if the load is changed to 9,800 N and the speed is changed to 1,000 RPM?
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