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Graphite/epoxy

Fiber-reinforced composite materials such as boron-epoxy and graphite-epoxy are usually treated as linear elastic materials because the essentially linear elastic fibers provide the majority of the strength and stiffness. Refinement of that approximation requires consideration of some form of plasticity, viscoelasticity, or both (viscoplasticity). Very little work has been done to implement those models or idealizations of composite material behavior in structural applications. [Pg.17]

Specific numbers are not available for the final comparison in which all cost factors are weighed. First of all, a possibly higher raw material cost for graphite-epoxy is made up for, at least in a qualitative sense, by the fact that not as much machining is required for the graphite-epoxy spar. Essentially only as much graphite-epoxy as is needed is bought, whereas many times the amount of titanium that is needed in the final... [Pg.35]

Some graphite-epoxy structures can be tailored to have a zero coefficient of thermal expansion, a big advantage for large antennas that must pass in and out of the sun, yet maintain dimensional stability for accuracy of pointing the signal. For example, a graphite-epoxy truss is used to stabilize and support the Hubble Space Telescope. [Pg.50]

Several experiments will now be described from which the foregoing basic stiffness and strength information can be obtained. For many, but not all, composite materials, the stress-strain behavior is linear from zero load to the ultimate or fracture load. Such linear behavior is typical for glass-epoxy composite materials and is quite reasonable for boron-epoxy and graphite-epoxy composite materials except for the shear behavior that is very nonlinear to fracture. [Pg.91]

As an illustration of the results of the measurements just described, the mechanical properties for four unidirectionally reinforced composite materials, glass-epoxy, boron-epoxy, graphite-epoxy, and Kevlar 49 -... [Pg.100]

Glass-Epoxy Boron-Epoxy Graphite-Epoxy Kevlar -Epoxy... [Pg.101]

Figure 2-43 Hoffman Failure Criterion for Graphite-Epoxy (Data from Kim [2-24])... Figure 2-43 Hoffman Failure Criterion for Graphite-Epoxy (Data from Kim [2-24])...
For a high-modulus graphite-epoxy composite material with... [Pg.267]

Maximum deflection results for a graphite-epoxy laminate for which... [Pg.300]

As for the deflection problem in Section 5.3.3, the effect of the number of layers on the buckling load is found by dividing a constantthickness, equal-weight cross-ply laminate into more and more laminae as in Figure 5-12. Results for graphite-epoxy antisymmetric cross-ply laminated plates for which Ei/E2 = 40, Gi2/E2 = - - v,2 = -25 are... [Pg.310]

See other pages where Graphite/epoxy is mentioned: [Pg.465]    [Pg.110]    [Pg.152]    [Pg.1190]    [Pg.29]    [Pg.30]    [Pg.30]    [Pg.30]    [Pg.33]    [Pg.35]    [Pg.35]    [Pg.36]    [Pg.38]    [Pg.41]    [Pg.43]    [Pg.43]    [Pg.43]    [Pg.44]    [Pg.47]    [Pg.48]    [Pg.52]    [Pg.84]    [Pg.98]    [Pg.101]    [Pg.113]    [Pg.121]    [Pg.147]    [Pg.152]    [Pg.184]    [Pg.221]    [Pg.245]    [Pg.246]    [Pg.269]    [Pg.275]    [Pg.297]    [Pg.298]    [Pg.311]    [Pg.313]    [Pg.315]    [Pg.319]   
See also in sourсe #XX -- [ Pg.17 , Pg.29 , Pg.33 , Pg.35 , Pg.38 , Pg.41 , Pg.43 , Pg.47 , Pg.50 , Pg.52 , Pg.84 , Pg.98 , Pg.100 , Pg.113 , Pg.147 , Pg.152 , Pg.184 , Pg.221 , Pg.245 , Pg.267 , Pg.269 , Pg.297 , Pg.300 , Pg.310 , Pg.311 , Pg.312 , Pg.319 , Pg.321 , Pg.325 , Pg.326 , Pg.327 , Pg.336 , Pg.347 , Pg.354 , Pg.355 , Pg.356 , Pg.357 , Pg.358 , Pg.359 , Pg.360 , Pg.369 , Pg.380 , Pg.391 , Pg.395 , Pg.396 , Pg.415 , Pg.421 , Pg.457 , Pg.485 , Pg.491 ]



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