Modulus tensile/Young

Figure 4 helps illustrate the terminology used for stress-strain testing. The slope of the initial straight-line portion of the curve is the elastic modulus of the material, In a tensile test this modulus is Young s modulus,... 

The increment in mechanical properties (tensile strength, 300% modulus, and Young s modulus) as a function of SAF is plotted in Fig. 39. In general, the higher level of SAF, which in turn indicates better exfoliation, results in high level of property enhancement. However, the level of increment with the increase in SAF is different in all three cases and follows a typical exponential growth pattern. The apparent nonlinear curve fitting of the experimental values presented in Fig. 39 is a measure of the dependence of mechanical properties on the proposed SAF function. 

In various experiments different elastic constants are being determined with a torsion pendulum, for instance, the shear modulus, G, is measured, with creep or vibrations in elongation or in bending the Young s modulus, (tensile modulus), E. For an isotropic material the relation between E and G is as follows ... 

Fiber lypN Young i modulus Tensile strength renge, 10 p.s.l. range, in p.s-I- Row msterlel employed... 

Sample specification Young s modulus Tensile strength Toughness Breaking elongation ... 

Figure 8.2 Calculated tensile Young s modulus as a fimciion of (angular displacement from the a-axis) for a single crystal of graphite.

Figure 8.12. Tensile Young s modulus of a copolycarbonate composite as a function of carbon fiber concentration. [Adapted, by permission, from Zihlif A M, Di Liello V, Martuscelli E, Ragosta G, Int. J. Polym. Mat., 29, Nos.3-4, 1995, 211-20.]...

Tensile (Young s) or Shear Modulus (logarithmic scale)... 

Despite many studies of the effects of photooxidation on mechanical properties (such as Young s modulus, tensile strength, ultimate elongation, etc.. ..), there is very little information about these effects on fatigue life. For that reason, we studied the fatigue life of LDPE films as a function of UV exposure. The results are shown in Fig. 2 where logNp (Np being the number of cycles sustained before failure) is plotted vs. time of UV exposure. In this case the strain amplitude is 8% and the frequency (oj) is 10 cycles/mln. 

Young s modulus, also referred to as elastic modulus, tensile modulus, or modulus of elasticity in tension is the ratio of stress-to-strain and is equal to the slope of a stress-strain diagram for the material. In the standard test method, ASTM D412, a force is apphed to a dog-bone-shaped sample of the cured adhesive. The force at elongation (strain) is measured. Most often, the elongation is 25-30% although for elastomeric materials it may be 100% or greater. 

Reinforcement Processing Fiber Tensile Young s Flexural Impact content strength modulus strength strength (%) (MPa) (GPa) (MPa) (KJ/m ) ... 

The proportionality constant in stress/strain measurements is known as the modulus of elasticity, the E modulus, or Young s modulus. The E modulus is always related to the cross section of the sample before stretching. The reciprocal of the modulus of elasticity is known as the tensile compliance. 

PVDF) matrix followed by solvent casting resulted in composites that showed a Young s modulus, tensile strength and toughness in the polymer composite which were two to three times higher than that without the compatibilizer at only 0.05% of MWNTs content." ... 

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