Detection of Defects in Composite Pyrotechnic Materials and Products by IR NDT Methods
Pyrotechnic composite materials are widely used in military and civil applications as solid composite (heterogeneous) propellants and gas-generators in rocket motors. Nondestructive testing (NDT) methods are used to detect defects which can disturb in reliable and safe functioning of these materials and products or distinctly decrease the level of their performance characteristics. These defects are caused by intrusions, voids, caverns (e.g. air bubbles), cracks and stratifications of different size, having different shapes and densities than the main (matrix) material. Defects in composite pyrotechnic materials and products can be created in their production stage or in service time esp. during long-term storage. The diverse and changeable environmental conditions appearing in life cycles of composite pyrotechnic materials and products including such materials, decide in considerable degree about their physicochemical properties such as thermal and mechanical characteristics, physicochemical stability, material compatibility (esp. chemical reactivity) and durability. In this paper both computer simulations to define defects which could be detected by using IR thermography method, and selected experimental investigations are presented.
infrared NDT composite pyrotechnic materials inhibitor coating propellants surface and subsurface defects
Waldemar SWIDERSKI Maciej MISZCZAK
Military Institute of Armament Technology; Zielonka, Poland
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
1851-1858
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）