Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Can the shafts be subjected to cyclic or fatigue stress?
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Yes the shafts can be subjected to cyclic or the fatigue stress
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- • Compute the maximum shear stress and angle of twist of each type of shaft below. – Closed tube shaft – Open tube shaft • Briefly describe which type of shaft is more effective. • See the dimensions of each tube, the value of internal torque, and the shear modulus in the next page.arrow_forwardA 2" diameter shaft with a radial hole of 0.5" dia. is made of steel whose BHN=186. What is its fatigue-strength reduction factor if the shaft is to be subjected to pure torsion?arrow_forwardHW12 The gearing of a machine tool is shown in the Figure below. The motor shaft is connected to gear A and rotates at 1500 r.p.m. The gear wheels B, C, D and E are fixed to parallel shafts rotating together. The final gear F is fixed on the output shaft. Fined: 1-the speed of gear F 2- rotating speed of gears (B, C, D and E) The number of teeth on each gear are as given below: Gear A B C D E F No. of teeth 25 35 90 30 80 60 + A B E+ D F LLarrow_forward
- Please help, let me know if there's anything I need to upload. thank youarrow_forwardExplain Miner's Rule and discuss the limitation in applying Miner's Rule. An engine crankshaft is found to have the following fatigue life characteristics: At operating stress of 420MPa, the number of cycles to failure is 65 cycles. At operating stress of 360MPa, the number of cycles to failure is 390 cycles, and at operating stress of 130MPa, the number of cycles to failure is 11,900 cycles. (i) Apply Miner's Rule, find the fraction of life exhausted under each of the stress level. Determine how many times the following sequence can be repeated. Operating stress of 420MPa for 7 cycles, operating stress of 360MPa for 65 cycles, and operating stress of 130MPa for 325 cycles. Find the endurance limit and fatigue life corresponding to the stress amplitude of 675MPa from the SN curve for ultra-high strength steel TM210A test data as shown in Figure Q3, 795 775 # Material: TM210A Specimen: Smooth Test condition: Kt=1,R=-1 755 735 Fitting curve X Broken 715 0 Run out 695 675 655 635 615 595…arrow_forwardI need help solving this problemarrow_forward
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