Avoidance bending

Fig. 8.104 Methods of gripping specimens in order to avoid bending stresses, (a) Device for threaded end specimens, and (b) device for shouldered-end specimens (from Stress Corrosion...

If possible, control wheel and workrest plate support the workpiece on the machined circumferential area to avoid bending. However, this three-point support can induce self-regenerative roundness errors as explained in the next section. In centerless grinding the radial feed is relative to the workpiece diameter, not the radius as in grinding between centers (Marinescu et al. 2007). Therefore, the depth of cut, Ug, per work-piece revolution can be calculated as... 

Avoid bending, reaching, or twisting your back when... 

Avoid bending and twisting your back turn with your feet when you need to change direction. 

Use a gas/oxygen flame to seal one end of the glass capillary. Choose an adequate flame temperature, which is not too hot to avoid bending the glass. Rotate the capillary continuously on the side of the flame to obtain a conical shape (Figure 6.3.1.1). This shape must be obtained to adequately place the Pt wire in the capillary. 

Measure 180 ji,L of water into the 250 [xL syringe and add this to the reaction mixture through the septum (guide the fine needle with your thumb and forefinger to avoid bending it). Stir the very pale yellow solution for 20 min at room temperature. 

The central ejector pin b is actuated at an adjustable position of the opening movement or after entry of the robot arm. The ejector pins g which are attached in the ejecting plate are pushing the injection molded part off the core and hand it over to the demolding robot. To avoid bending under the influence of cavity pressure, the ejector box i has to be designed sufficiently stable which means to keep relatively small distances between the support bars k and possibly by means of support pins c. 

Avoiding bending and stress in a pipe system is a factor in the installation of plastic pipe. Unlike steel pipe, plastic pipe is not intended to support heavier weights, such as valves, anchors, and so forth. Plastic pipe is designed to support soil loads and internal pressnres up to a specified hydrostatic pressure rating. When accessories are placed in the pipeline, such as valve boxes, the accessories must be supported to prevent additional bending and stress on the plastic pipe. 

All current design methods, such as JRA (1996), NEHRP (2000), IS 1893 (2001), and Eurocode 8 (CEN 2004), focused on bending strength of the pile to avoid bending failure due to lateral loads (combination of inertia and lateral spreading). In contrast to these conventional... 

---