Pin position

All data points from all strain gauges and both pin positions followed the same characteristic curve and confirmed a unique relationship between the peak strain from the gauge record and the stress intensity fector. hi addition, the peak strain values measured by the gauges provided a consistent and accurate measure of the crack tip position. Hence crack velocities could be determined from the signal times recorded by the oscilloscopes. 

A system with very stiff electrode pins has been developed for the treatment of bone metastases. In this system, a bone metastasis is defined, and pins positioned according to a treatment planning system, in and on all sides of the lesion. After pulse delivery the pins are removed and treatment completed. Extensive preclinical data have been obtained [32] and the first phase 1 chnical trial has commenced. 

Use standard toolroom components when possible. Drill bushings, pins, and clamps are available from many sources. Use shoulder pins in through-holes instead of dowel pins positioned by bottoming in the hole. Through-holes are easier to drill and do not collect dirt. 

Uneven wall thickness circumferentially Pin not centered in die ring Adjust die pin position... 

Fig. 8.52 Breakaway position of crack front from 2 pairs of pinning positions, each separated by distance d. Distance between 2 arms of crack front anterior to each pinning position (indicated by 2 arrows) is hypothesized to control breakaway position because of overlapping stress field. Large arrow is direction of crack propagation [36], With kind permission of John Wiley and Sons...

Few data cvirrently exist on the ellectlveness of boron and cadmium for criticality prevention In operations external to reactors that may involve fuel elements under conditions of water Immersion. Material bucklings and extrapolation distances have previously been measured and reported for 25.2 wt% Pu02-U(Nat)0a fuel pins in water. These experimental results have also teen compared with one-dimensional diffusion theory calculations using ENDF/B version n cross-section data. The previous measurements have now been extended to include criticality data On these same fuel pins positioned in lattices with boron- and cadmium-poisoned water. 

Tlie B C cross sections were obtained by modeling the pin positions relative to the fuel bundles as they are in the cask. It was important to reproduce the neutron spectrum as near as possibie to the actual design in obtaining proper cross sections. It was found during this study that spectral differences could result in BtC cross-section sets differing by 10 to 50%. The ability of the techniques used here to obtain cross-section sets, when properly emidoyed, has been demonstrated by comparison to poisoned crifical experiments to within 5%. 

The very low field effect mobilities reported in Table 5.2-26, show that the Fermi level is pinned in the gap because of the large concentration of surface states. Pinning positions of the Fermi level with respect to the top of the valence band at the surface are given in Table 5.2-27 for various semiconductors. 

Table 5.2-27 Pinning position of the Fermi level at semiconductor surfaces. Data are average values from various authors. Errors are given as standard deviations. References to the original papers and individual errors are given in [2.47]...

Figure 11-48. Inside undercuts can be made with removable wedges or ejector pins and ejector wedges, but seams will still show. The left view shows undercuts molded with removable wedges, the right view the mold knockout pin positioned through the permissible opening in the part and cavity cutoff approaches.

FIGURE 49.14 Gauge for checking connector pin position prior to pressing. This is best used for high lead count, fine-pitch pin press-fit connectors. 

Check the connector after pressing for even bottomside pin protrusion, topside connector body seating height, damage to the connector body, inaccurate mating pin positions (within the connector as opposed to within the board), damage, or movement of electrical shields if... 

Manifold nozzle (b) has a large cylinder which may be driven either hy compressed air at a minimum 0.6 MPa (closure force around 1 kN) or hydraulically at a maximum of 6 MPa (closure force around 10 kN). The pin is guided in the nozzle, so thermal expansion of the manifold does not affect the pin position. This design, though, leads to a zigzag flow channel. The nozzle is closed by a cylindrical pin in a tapered gate aperture. 

Time-of-Flight Stream Counters Pin positioned by motor control... 

Ejector-Return Pin n (return pin, surface pin, safety pin, position pushback) A projection, usually one of several that push back the ejector assembly as the mold closes. 

Fig. 3 also shows the limiting case of successful registration (pin insertion) for round pins, with all these errors compounded. J represents the point of contact between the pin and the hole, in this extreme case where pin insertion is just achieved. Due to the bend in the pin axis, the projection of the bottom surface of the pin on the XY plane will be an ellipse as shown, with center P (shifted from center P denoting the pin position with linear errors only). The major and minor axes of the ellipse will be 2a = Dp and 2b = Dp cos(a+o)). H is the center of the hole, shifted from H denoting the case with no angular errors. d and d y denote the X and Y distances between the pin and hole centers, due to the effect of linear errors alone. With the additional effect... 

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