However, all said stresses are very small, as compared to the permissible yield point
For the specimens having maxima at the yield point
, no resulting significant difference in tensile strength (p = 0.
A more detailed analysis of the estimated parameters A, B and C revealed that for each egg sac two clusters or populations of fibers could be found, mostly differing in the stress level of the region beyond the yield point
3 shows comparison of relaxed stress values obtained in tests performed before and beyond the yield point
Experimental results pertaining to yield point
and ultimate point are presented in Tables 3 and 4 respectively.
The yield point
at 23[degrees]C (73[degrees]F) is found to be about:
The lack of a distinct yield point
is due to the surface restraint, Poisson's effect, and the shape of the specimen, which create a multiaxial stress situation.
Note that the yield point
is a well-defined displacement in the curve.
Figure 5 shows stress-strain curves of the synthesized polyurethanes and results concerning the ultimate tensile strength, yield point
, percentage elongation at break, modulus of elasticity and shore D hardness obtained for the different samples at room temperature are summarized in Table 4.
5% strain and further increases in stress produce a continued decrease in this slope as the curve approaches the yield point
RHEO-CLAY: provides a high-inverted yield point
(YP)--plastic viscosity (PV) ratio for improved rate of penetration, optimum hole cleaning, and greater liquid/solids separation efficiency from hydrocylones - differs from sodium bentonite (montmorillonite) by having lower cation exchange capacity and greater yield in the presence of high hardness (Ca++/Mg++) and sodium (Na+) values.
This is the reason why a new method has been developed to determine deformation resistance, yield point
, tensile strength, ductility and contraction of high-strength steels during rapid heating.