Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- Need Help Plsarrow_forwardA steel rod 10 mm in diameter and Im long is heated from 20°C to 120°C, E = 200 GPa and a = 12 × 106 per °C. If the rod is not free to expand, the thermal stress developed is: (a) 120 MPa (tensile) (c) 120 MPa (compressive) (b) 240 MPa (tensile) (d) 240 MPa (compressive)arrow_forwardShow stepsarrow_forward
- A cylindrical 1045 steel bar (see the figure below) is subjected to repeated compression- tension stress cycling along its axis. If the load amplitude is 23,000 N, calculate the minimum allowable bar diameter (in mm) to ensure that fatigue failure will not occur. Assume a factor of safety of 2.0. Maximum stress, S (MPa) 700 600 500 400 300 200 100 0 4340 steel 104 Ti-5Al-2.5Sn titanium alloy 70Cu-30Zn brass EQ21A-T6 Mg alloy 105 1045 steel Ductile cast iron 107 2014-T6 Al alloy 108 10⁹ 106 Cycles to failure, N Data taken from the following sources and reproduced with permission of ASM International, Materials Park, OH, 44073: ASM Handbook, Vol. I, Properties and Selection: Irons, Steels, and High-Performance Alloys, 1990; ASM Handbook, Vol. 2, Properties and Selection; Nonferrous Alloys and Special- Purpose Materials, 1990; G. M. Sinclair and W. J. Craig, "Influence of Grain Size on Work Hardening and Fatigue Characteristics of Alpha Brass," Transactions of ASM, Vol. 44, 1952.arrow_forwardA pipe is being designed to carry a fluid at a pressure of 193 MPa. In order to allow sufficient fluid flow, the internal diameter of the pipe cannot be less than 3.6 mm. Due to space constraints, the outer diameter of the pipe cannot be greater than 12.5 mm. The maximum shear stress allowed in the pipe wall is 507 N/mm². Calculate the minimum outer diameter that the pipe can have. Give your answer in mm. Your Answer:arrow_forwardi need the answer quicklyarrow_forward
- Rigid bar ABCD is supported by a pin connection at A and by two axial bars (1) and (2). Bar (1) is a 30-in.-long bronze [E = 15900 ksi, 9.4x 10-6/°F] bar with a cross-sectional area of 1.00 in.?. Bar (2) is a 48-in-long aluminum alloy [E = 9200 ksi, a = 12.6 x 10-6/°F] bar with a cross-sectional area of 2.50 in.?. Both bars are unstressed before the load Pis applied. Assume L1=30 in., L2=48 a = %3D in., a=32 in., b=44 in., and c=14 in. If a concentrated load of P = 29 kips is applied to the rigid bar at Dand the temperature is decreased by 120°F, determine: (a) the normal stresses in bars (1) and (2). (b) the normal strains in bars (1) and (2). (c) the deflection of the rigid bar at point D. (2) L2 A B D L1 (1)arrow_forwardQuestion 6 A B 112 mm 1.2 m 0.9 m Figure 6 The structure supports force P=75 kN, as shown in Figure 6. The solid circular rod BD is made of A992 steel: a. Find the vertical and horizontal component acting on the pin of the pulley C. b. Find the compressive force in the rod BD. c. Find the effective length-factor for BD. d. Express the radius of gyration about any centroidal axis for a solid circular area as a function of the diameter of a circle. e. Find the critical effective slender ratio (KL/r), according to the AISC specifications. f. Determine the required minimum diameter of the A992 steel solid circular rod BD to the nearest mm as allowed by the AISC specifications. g. Determine the F.S. for buckling of the designed rod DB. -0.9 m Parrow_forward
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