Consider a 2-D object consisting of two triangle compartments, as shown in Figure P9.4. Suppose a solution containing a 511 KeV gamma ray emitting radionuclide with concentration f = 0.5….
estimate the direction in which the blank was cut.
It was stated in Section 7.7.1 that the thicker the sheet metal, the higher is its curve in the
forming-limit diagram. Explain why. In forming-limit diagrams, increasing thickness
tends to raise the curves. This is because the material is capable of greater elongations since
there is more material to contribute to length.
2. Inspect the earing shown in Fig. 7.57, and estimate the direction in which the blank was cut.
The rolled sheet is stronger in the direction of rolling. Consequently, that direction resists
flow into the die cavity during deep drawing and the ear is at its highest position. In Fig. 7.57
on p. 394, the directions are at about ±45_ on the photograph.