Stresses compressive

At nominal body forces the same compressive stress of 100 -110 Mpa was calculated in all directions in the middle of the head of the examined bolts... 

The measuring probe is characterized by indication directions, what allows for the precise defining of directions of maximum tensile as well as compressive stress activity. 

Fig. i. Results of Wirotest 202A indications as-a function of compressive stress of cylinder samples [Pg.384]

Fig. 3 shows results of Wirotest 202 A indications as a function of compressive stress for cylindrical samples d> 18 mm made of steel LH 15, what is turn indieates that the dependence of indications on compressive stress is linear in the range up to 180 MPa with regard of quenched (1) and up 120 MPa with regard to annealed (2) samples. 

In the annealed cylinder the presence of own compressive stress has been observed, which was disclosed as lack of indications changes in the initial stretching phase, and their value may be evaluated on the basis of extrapolating the graphs to the coordinate axis. 

Fig. 4. Measurement results of a pin of dimensions 46/15,5 as a function of tensile and compressive stress using the Wirotest .

In Fig, 4. measurement results of a pin of dimensions 46/15,5 have been shown as a function of tensile and compressive stress using the Wirotest , where the course of the graph of these dependence on the load in the linear scope of indications is similar to the compressive as well as the tensile stress. 

The SPATE technique is based on measurement of the thermoelastic effect. Within the elastic range, a body subjected to tensile or compressive stresses experiences a reversible conversion between mechanical and thermal energy. Provided adiabatic conditions are maintained, the relationship between the reversible temperature change and the corresponding change in the sum of the principal stresses is linear and indipendent of the load frequency. 

Fig.4 Relation of reflective echo height F/B and axial compressive stress a (pseudo-bonding)...

The F/B of (a) decreases about 1 8dB in the maximum as the axial compressive stress is loaded, and is constant during an... 

During pressure sintering, interiDarticle compressive stress, approximated by the externally applied stress and nonnalized by the relative density of the compact p, supplements the surface tension driving force for pore shrinkage ... 

It has been reported that Parylene N is deposited in a state of compressive stress (37). The inherent stress is 18 MPa (2300 psi) and is invariant with thickness. This congenital compressive stress can be removed and rendered tensile by a thermal cycle. 

If it is assumed that uniform tensile stress, like uniform compressive stress (7), has no significant effect on yield, then the yield pressure of a cylinder subjected solely to an internal pressure may be calculated from... 

CompoundShrinka.g e. In its simplest form (Fig. 8a) compound shrinkage consists of machining the inner radius of an outer component I, (Qp so that it is smaller than the outer radius of an inner component II, The difference between the two is known as the radial interference 5. To assemble the cylinders, outer component I is heated and/or inner component II cooled so that the outer component can be sHpped over the inner as shown in Figure 8b. When the temperature of the assembly returns to ambient, a compressive stress (pressure) is generated across the interface which simultaneously compresses the inner and expands the outer component and, in so doing, displaces radius (r/j by Uj and radius ( jj by U, Unfortunately, it is difficult to carry out this operation without setting up stresses in the axial direction (32). 

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