| 摘要 |
<p>The stiffness of materials formed from aluminium alloy sheets laminated with layers of long aligned fibres embedded in a matrix of resin material is enhanced by reinforcing the aluminium alloy component with ceramic particles or whiskers. Use of stiff fibres such as carbon, aramid, alumina, silicon carbide or mixtures of these enables the stiffness of the fibre/resin component to be matched to that of the metal/ceramic component. This results in good fatigue crack growth resistance in the finished laminate, even for short crack lengths. In a preferred laminate, the metal/ceramic component is formed with a matrix of aluminium-lithium alloy. Such alloys are inherently stiffer than alloys without lithium, with the result that the increased stiffness obtained from ceramic reinforcement is enhanced still further.</p> |
