Research of Nozzle Divergent Section Detection Based on Modal Flexibility Curvature Difference Method

Abstract:

A method based on modal analysis is put forward to solve the problem of detecting the debond defects of solid rocket motor nozzle divergent section in service. The modal flexibility curvature difference is used to identify the debond defects. The locations and sizes of debond defects can be estimated accurately. The results of simulations indicate that the inspection speed and efficiency are much higher than those of ultrasonic method are. The method is easy to realize outfield detection. This method can be applied to identify the debond defects of the nozzle divergent section or multilayer composite structure. It provides theoretical guidance and methodological reference for debond defects detection of multilayer composite structure.

• Periodical: Advanced Materials Research (Volumes 712-715)
• Pages: 2095-2100
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.712-715.2095
• Online since: June 2013
• Authors: Zhi Gao Xu*, Qiao Wang, Jing Ma
• Keywords: Divergent Section, Modal Flexibility Curvature Difference, Nozzle, Solid Rocket Motor (SRM)

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