| 摘要 |
A tubular composite structure for transmitting forces comprises a metal tubular core, preferably of aluminum, having a layer of structural metal adhesive on the exterior surface of the core. On top of the structural adhesive layer are alternating laminae of resin impregnated unidirectional reinforcing fibers, particularly carbon or graphite fibers, and of woven fiberglass, beginning with a layer of woven fiberglass followed by a lamina of resin impregnated continuous unidirectional reinforcing fibers and continuing in alternating fashion but ending with a final layer of resin impregnated continuous unidirectional reinforcing fibers, each successive layer of resin impregnated continuous unidirectional fibers having the fibers oriented at an angle of between about 5 DEG to 12 DEG with respect to the longitudinal axis of the metal tube and in opposite orientation with respect to the next preceding layer. The fibers in the woven fiberglass layer are oriented at 0 DEG and 90 DEG with respect to the longitudinal axis of the metal tubular core. Preferably the unidirectional continuous reinforcing fibers are carbon fibers and particularly graphite fibers having a Youngs modulus of elasticity of about 30x106 to about 50x106 psi and a tensile strength of about 300,000 to about 400,000 psi.
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