5) The magnitude of residual stress inwelding depends upon:(i) Metal melted or deposited(ii) Design of weldment(iii) Support and clamping of components(iv) Welding process usedWhich of the statements given above arecorrect?O (1), (ii) and (iv)O (), (ii) and (iiiO (1) and (iii)O (ii) and (iii)

Answered: 5) The magnitude of residual stress in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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(1) What are the methods used to obtain a good weld when welding steel when the carbon content is high? b) Find the appropriate size and length for the weld joint shown in the figure if the strength is equal to (70000Ib) and the allowable shear stress value is 40ksi and the weld rib dimension is (1/4in)
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Two 3.5 mm thick metal (Um = 9.5 J/mm?) sheets are being joined using resistance spot welding. To achieve required strength, it is desired to form a weld nugget that is 5.5 mm in diameter and 4.0 mm thick. The weld duration will be set at 0.3 sec. If the electrical resistance between the surfaces is 140 microohms, and only onethird of the electrical energy generated will be used to form the weld nugget determine the current.
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QUESTION 1 In an arc welding operation, a groove weld has a cross-sectional area=0.055 in² and is 24 in long. (Round your final answers to 1 decimal place) (a) What quantity of heat (in Btu) is required to accomplish the weld, if the metal to be welded is aluminum? Btu (b) How much heat must be generated at the welding source, if the heat transfer factor = 90% and the melting factor = 60%? H= Btu
Q3 (a) What are the methods used to obtain a good weld when welding steel when the carbon content is high? b Find the appropriate length of the weld joint shown in the figure if the force is equal to (60000lb) and the operating stress value is (60ksi) and the size of the weld is (1/4in).
A cylindrical air-compressor tank with an inside diameter of 50 mm is to be designed to withstand safely a working pressure of 0.86 MPa. Boiler plate with an allowable tensile stress of 76 MPa. All seams will be butt welds with an expected efficiency of 100 percent. a.) Determine the force per lineal mm of longitudinal seam, b.) Determine the required thickness “t” of wall, c.) Determine the unit stress in the circumferential seam.
Question No. 11: (a) Illustrate flatness, straightness and circularity with symbol. (b) A circular shaft, 80 mm in diameter is welded to support by means of a circumferential fillet weld. It is subjected to a torsion moment of 3000 N-m. Determine the size of weld, if the maximum shear stress in the weld is not to exceed 70 N/mm2 . (c) Analyze different stresses during design of screw and nut
During a TIG welding process, the arc current and arc voltage were 50 A and 60 V, respectively, when in the welding speed was 150 mm/min. In another process, the TIG welding is carried out at a welding speed of 120 mm/min at the same arc voltage and heat input to the material so that weld quality remains the same. The welding current (in A) for this process is
Please make the answer long. Thank you!
The unit melting energy for a certain sheet metal is 10J/mm^3 .The thickness of each of the two sheets to be spot-welded is = mm. To achive required strength, it is desired to form a weldnugget that is =7 mm in diameter and 3.5 mm thick. The weld duration will be set at 44 sec .If the electrical resistance between the two surfaces is 144 micro-ohms and only one half the electricity generated will be used to form the weld nugget Determine the minium current level required in this operation
appropriate length of the weld joint shown in the figure if the force is equal to (60000lb) and the operating stress value is (60ksi) and the size of the weld is (1/4in).

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