Quantitative evaluation of defect indication in the radiographic image is essential for the effective quality assurance of aerospace components through radiography. Since optical density variation in the radiograph relates to the attenuation of X-ray in the material, information on depth and nature of defect can be obtained through analysis of the optical density profile. Mathematical modeling can be used as an analytical tool by generating reference X-ray images of components with programmed defects. A method of mathematical modelling of the X-ray image of large solid rocket motor for the analysis of material inclusion is presented. The necessary algorithm has been developed and demonstrated in a case study. The optical density corresponding to different material inclusion of varying thickness can be theoretically evaluated and a standardization table can be generated. The related parameters are optical density difference of inclusion in the X-ray image, size and nature of the component, characteristics of material inclusion such as material density, its thickness in the imaging direction, etc. The experimental optical density difference of any inclusion can be correlated with this chart and an optimized prediction can be made.
Theoretical modeling of X-ray image for predicting the nature of defect in a solid rocket motor
Theoretische Modellierung von Röntgenbildern zur Vorhersage der Fehlerart in Raketenfeststoffmotoren
2005
6 Seiten, 2 Bilder, 3 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch