| 摘要 |
The present invention provides a material (4, 5, 8) for use in vacuum bagging a component (3), particularly a composite component like a fibre-reinforced plastic component, wherein the material (4, 5, 8) comprises a compound sensitive to moisture, such that an exposure of the compound to moisture or wetting causes a physical and/or chemical change in the compound that is visually detectable in the cover material. The invention also provides a method of leak detection during vacuum bagging, comprising the steps of: arranging a component (3) in a vacuum bagging assembly (1), especially to form a fibre-reinforced plastic component; arranging a material (4, 5, 8) according to the invention in the vacuum bagging assembly (1) such that the compound sensitive to wetting or moisture is under, or on an inner side of, a sealing film or vacuum bag (4) of the assembly (1); applying a vacuum to the vacuum bagging assembly (1) to evacuate a space containing the component (3) and sealed by the sealing film or vacuum bag (4); and wetting an outer surface (15) of the sealing film or vacuum bag (4). |
