Study on shaped charge cutting of carbon-fiber-reinforced epoxy resin-based composite laminate under prestressing force

• Published in: Journal of mechanical science and technology 2021, 35(9), , pp.3967-3977
• Main Authors: Wang, Meng, He, Zhijie, Zhao, Kang, Su, Hong, He, Zekan, Xuan, Haijun
• Format: Article
• Language: English
• Subjects: Carbon fiber reinforced plastics; Carbon-epoxy composites; Composite materials; Control; Dynamical Systems; Engineering; Epoxy resins; Failure modes; Fiber composites; Fiber reinforced polymers; Industrial and Production Engineering; Laminates; Mechanical Engineering; Original Article; Prestressing; Spalling; Stress waves; Thickness; Vibration; 기계공학
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-021-0810-y

To realize the explosive separation of carbon-fiber-reinforced composites under a linear-shaped charge, the failure mode of the materials under a linear-shaped charge jet was obtained by combining numerical simulation with experiment. Results show that under the action of the shaped charge jet, the three main failure modes of composite materials are shear failure, delamination failure and tensile failure. Moreover, there are different failure modes of composite materials with different thicknesses. In the early stage of cutting, local fiber peeling occurs on the surface of laminates with different thicknesses under the action of initial jet and stress wave. The thin laminate is sheared directly under the energy of the high-speed jet while the thick laminate first suffers shear failure under the action of the jet. After the end of the jet action, tensile failure occurs under the action of stress wave and, at the same time, spalling occurs along the thickness direction.