| 摘要 |
Caul plate is formed by laying-up uncured composite (27) on mandrel (20), covering it with nonporous film (28), and arranging a second uncured composite (34), having a lower curing temperature than the first, over the film to form an assembly. The assembly is cured by heating to above the curing temperature of the second composite, the second composite becoming the rigid caul plate for the inner mould line of the first composite. Caul plate, for aligning against inner mould line of composite, honeycomb core, sandwich panel, is formed by laying-up the uncured panel on a lay-up mandrel (20), covering it with nonporous film (28), arranging another composite material (34), having a lower curing temperature than the first, over the film, and curing the assembly by heating it above the second curing temperature but not the first so that the second composite material becomes rigid and can be used as the caul plate for the inner mould line of the uncured composite honeycomb core sandwich panel. The second composite is vacuum bagged in a one chamber and the first composite is vacuum bagged in a second chamber before fully curing the first composite. The vacuum is less than 10 inches of mercury and is not enough to crush the honeycomb core. |
