ZHAO Zhongjian

(Shanghai FRP Research Institute Co. Ltd., Shanghai 201404, China)

Abstract: The open pore size distribution of porous silica ceramics for radome application was tested by a mercury porosimeter. The results show that their open pore sizes were mainly distributed between 100~400nm. Then, the silica ceramic radome was nondestructively tested by the light irradiation method, the industrial CT and the X-ray digital imaging nondestructive testing system. The working principles, testing advantages and shortages of the three methods were analyzed respectively.

Key words: silica ceramic; radome; pore size distribution; nondestructive testing; industrial CT; X-ray digital imaging