Engineering, 23.08.2019 00:10 kikipie8504
A25 mm diameter solid round bar has a groove 2.5 mm deep with a 2.5 mm radius machined into it. the bar is made of aisi 1030 cd steel and is subject to purely reversing bending of 220 n. m. for the s-n curve of this material, let the fatigue strength fraction be equal to 0.9. (a) estimate the number of cycles to failure (b) what is the factor of safety guarding against static failure? (c) if the bar is also placed in an environment with a temperature of 350 oc, estimate the number of cycles to failure
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Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
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Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
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Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
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Engineering, 04.07.2019 18:10
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
A25 mm diameter solid round bar has a groove 2.5 mm deep with a 2.5 mm radius machined into it. the...
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