| 摘要 |
A method of producing a structural component (12) from a primary wall struct ure (14) which defines a plurality of juxtaposed primary cells (15) which extend between and which are open to the front face and the rear face of the component (12) and a secondary wall structure (16) within the primary wall structure (14) which divides each pri mary cell (15) into two or more subcells (151, 152) comp rises first forming the primary wall structure (14) and then forming the secondary wall structure (16) within the primary wall structure ( 14) by bringing the primary wall structure (14) into a condition in which it lies w ithin a body of liquid, the surface of which provides or is provided with a photosensitive layer and in which the photosensitive layer is at a pr edetermined level in each primary cell (15) and exposing the photosensitive layer to radiation source to bring the photosensitive layer t o a consolidated state within the primary wall structure (14) to form the secondary wall structure (16). Where the component (12) is a noise attenuation panel, the secondary wall structure (16) may be so formed as to provide for the required sound absorption properties while p roviding substantially no support for structural loads.
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