Effect of the Edges

Molded-in insert If metal inserts are to be molded into a plastic product consideration should be given to wall thickness around the insert (Table 3-18) and their shape. The shape should present no sharp edges to the plastic, since the effect of the edges would be similar to that of a notch. A knurled insert... 

Thus, for deep levels it is possible that the region x2 — X in which they are effective as traps is substantially less than the total depletion layer thickness W. For the case of a current transient the effect of the edge region is to change the expression given by Eq. (18) to (Grimmeiss, 1977)... 

The third integral in (1.90) is zero by the definition of q(r). The fourth is also zero except when r is of the same order of magnitude as the sample dimension so that the effect of the edge of the sample becomes important. Since we are not interested in an effect that becomes noticeable only when r is of macroscopic dimension, the fourth term in (1.90) can be neglected. Thus (1.90) reduces to... 

The workpiece crystal orientations also have important effects on defects evolvement, as shown in Fig. 7. When the AFM diamond tip scratches the surface of single crystal copper as shown in Fig. 7(a), it can be seen that dislocation is prone to nucleate ahead the tool, and those dislocations glide in the [101] direction as the effects of the edge of the AFM diamond tip. The Fig. 7(b) shows the case of (110) plane of single crystal copvper. From the Fig. 7(b), it is found that dislocations glide in the [-101] direction. For the case of (111) plane of single... 

Fourth, molded-in metal should be avoided whenever alternate methods will accomplish the desired objective. If it is essential to incorporate such inserts, they should be shaped so that they will present no sharp inside comers to the plastic. The effect of the sharp edges of a metal insert would be the same as explained in the first point above, namely, brittleness and stress concentration can occur. The cross-section that surrounds a metal insert should be heavy enough that it will not crack upon cooling. A method of minimizing cracking around the insert is to heat the... 

Figure 35.41 shows the effect of the cross axes setting on the clearance along the calender roll. The effect of the deflection of both rolls on the clearance is given for the reference simation as given before. The total width W of the roll is 1600 mm and the diameter D is 650 mm (inner diameter Dj = 350 mm). Z is the coordinate parallel to the rolls and originates at one of the calender roll edges. 

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