It was expected that the axial
compression modulus of PBO fiber in the composite was also enhanced and the maximum increase was 21.0% (at indentation depth of 250nm) when the radiation dose was 60 kGy.
With the combination of the equilibrium
compression modulus is as follows: E = y[GAMMA].
The global bending modulus of elasticity ([E.sub.0,mean,test]) and
compression modulus of elasticity parallel to the grain ([E.sub.c,0,test]) were determined in previous tests (Table 4).
Here, [phi] denotes the porosity, [[phi].sub.0] is the initial porosity, [[epsilon].sub.v] the volumetric strain of the coal and rock masses, p (in Pa) is the pressure of the fluid, [p.sub.0] (in Pa) is initial pressure of the fluid, and [K.sub.S] represents the volumetric
compression modulus of the coal and rock masses.
Moreover, the
compression modulus also shows an increase of 11%, with the incorporation of CNTs (Table 2).
To quantify the phase transition process of the monolayers, we introduced the parameter of
compression modulus ([C.sup.-1.sub.s]).
In Gurtler's research [7], the "in-plane" compression and shear experiments on FRP decks were conducted (Figure 3) to get the nominal
compression modulus and nominal shear modulus of the whole FRP deck panel, which were used to develop the design methods for the FRP-steel composite girder system.
where [[nabla].sup.s]u = 1/2 ([nabla]u + [nabla][u.sup.1]) is the strain tensor with [nabla][u.sup.t] denoting the transpose of the matrix [nabla]u; [rho] is the density of the medium; the complex quantity [mu] + i[omega][eta] is the shear modulus, with [mu] indicating the storage modulus and [eta] indicating the loss modulus reflecting the attenuation of a viscoelastic medium; [lambda] and [[eta].sub.[lambda]] are the
compression modulus and compression viscosity, respectively.
Simulated and experimental results were found to be very close to each other in respect of
compression modulus of PLA material as illustrated in Fig: 9.
Compressive strain was higher than the tensile strain and further showed the difference between tension and compression elastic modulus, as the tension modulus of PSB was more than the
compression modulus. The change of the ultimate strain range was wide, also showing the large variability in performances of PSB.
The small strain
compression modulus is the same as the small strain tensile modulus only for very small strains.