Chapter 10: Toughening Methods for Thermoset-Matrix Composites
The second-generation composite materials were added to increase the strain to failure of the primary phase and/or create a dispersed second phase, thereby enhancing the fracture toughness of the thermosetting matrix. These matrices offered novel design capabilities for composites in a variety of aircraft applications. To improve the damage tolerance of composite materials even further, an engineering approach to toughening was used to modify the highly stressed interlayer with either a tougher material or through the use of preformed particles, leading to the third generation of composite materials. This chapter discusses the development, processes, application, advantages, and disadvantages of dispersed-phase toughening of thermoset matrices. Information on the processes of particle interlayer toughening of composite materials is also included.
Toughening Methods for Thermoset-Matrix Composites, Optical Microscopy of Fiber-Reinforced Composites, By Brian S. Hayes, Luther M. Gammon, ASM International, 2010, p 177–191, https://doi.org/10.31399/asm.tb.omfrc.t53030177
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