A direct extrusion operation thecross section shown in Figure isproduced from a copper billetwhose diameter 225mm andlength = 500 mm. In the flow curvefor copper, the strength coefficient= 400 MPa and strain hardeningexponent = 0.30. In the Johnsonstrain equation, a = 0.8 and b = 1.5.Determine: 1. The extrusion ratio, 2.The shape factor, 3. The forcerequired to drive the ram forwardduring extrusion at the point in theprocess when the billet lengthremaining in the container = 325 mm,4.The length of the extrudedsection at the end of the operationif the volume of the butt left in thecontainer is 225,000 mm3. *100

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Answered: A direct extrusion operation the cross…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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At a larger radius the rate of shear strain is 18 s-1 and the consistency coefficient is 0.6 Pa s. Calculate the shear stress.
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Case Study Calculate the Tensile Toughness Tensile toughness measures the total energy absorbed prior to fracture and is different from fracture toughness and impact toughness. Fracture toughness measures the resistance to fracture when a flaw (i.e. crack) is present in the material. Since it is nearly impossible and costly to manufacture materials with zero or near zero defects, fracture toughness is a major consideration for all structural materials. Impact toughness measures a materials ability to withstand an impact blow (i.e. high strain rates) and is particularly important in assessing the ductile-to-brittle transition behavior (more details later). Impact toughness is also commonly referred to as notch toughness. The tensile toughness can be estimated using the stress-strain curve by measuring the area under the curve (both the elastic and plastic regions). Tensile Toughness = f Stress, σ Ty- Ey Efracture ETS Ur Ey Efracture o de = U₁ + SETS o de + Sefracture o de Ey Ey o de =…
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If the engineering strain in a tensile bar is 0.0025 and Poisson’s ratio is 0.33, find the original length and the original diameter if the length and diameter under load are 2.333 ft. and 1.005 in. respectively.

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