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Numerical Estimation of Crack Depth in Curved Surfaces of Polymer Bonded Explosives Using Rayleigh Surface Wave
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1.Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621999, China;2.School of Aerospace Engineering, Xiamen University, Xiamen 361005, China

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    Abstract:

    Cracks in polymer bonded explosives (PBXs) may occur during manufacturing, transportation and storage stages. The surface crack of explosives has an important influence on their mechanical properties and detonation performance. Quantitative detection of the depth of the surface crack is of great significance to the process of surface crack removal. The numerical simulation of surface crack depth estimation was investigated by using Rayleigh surface waves which propagate along the cylindrical and spherical surfaces of PBXs. The propagation patterns of surface waves were studied on these two types of surfaces. The reflection and transmission of surface waves at different frequencies in PBXs with crack of varied depth were simulated through the finite element method (FEM).The FEM results indicate that the depth of crack in curved surfaces can be deduced according to the amplitude variations of reflected and transmitted waves.

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江畅,杨占锋,李卫彬,等.基于瑞利表面波的曲面PBX表面裂纹深度检测的数值模拟(英)[J].含能材料,2020,28(8):749-758.
JIANG Chang, YANG Zhan-feng, LI Wei-bin, et al. Numerical Estimation of Crack Depth in Curved Surfaces of Polymer Bonded Explosives Using Rayleigh Surface Wave[J]. Chinese Journal of Energetic Materials,2020,28(8):749-758.

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History
  • Received:June 03,2019
  • Revised:March 16,2020
  • Adopted:October 09,2019
  • Online: March 12,2020
  • Published: August 25,2020