Debonding Detection of Solid Rocket Motor Based on EMI Technology

Yu Xiang Zhang; Yun Zhou; Fu Hou Xu; Shi Yi Chen

doi:10.4028/www.scientific.net/AMR.538-541.2117

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Debonding Detection of Solid Rocket Motor Based on...

Debonding Detection of Solid Rocket Motor Based on EMI Technology

Abstract:

At present, there is no effective online debonding monitoring method for solid rocket motor. In order to solve the problem, the electro-mechanical impedance (EMI) method is introduced into online debonding monitoring for solid rocket motor (SRM). The EMI model of PZT and SRM is developed. The finite element method is employed to analyze the electro-mechanical impedance of the PZT, the conductance curves of PZT are obtained with different damaging phase of SRM, the root-mean-square deviation (RMSD) is used to assess the aging level. The result indicates that EMI as a new detection method is effective in identifying the existence and severity of cracks in SRM. As the debonding area increases, the difference of conductance curves becomes more obvious and the RMSD becomes larger.