An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture toughness of 38 . it has been determined that fracture results at a stress of 223 mpa when the maximum (or critical) internal crack length is 2.85 mm. a) determine the value of for this same component and alloy at a stress level of 334 mpa when the maximum internal crack length is 1.43 mm. g

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

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.