A novel optical technique for observation of global particle distribution in toughened composites

作者：Hsiao Hao Ming^*; Ni Chih Nan; Wu Ming Dao; Lin Chiao Wen

来源：Composites Part A: Applied Science and Manufacturing , 2012, 43(9): 1523-1529.

DOI：10.1016/j.compositesa.2012.04.004

• Particle-reinforcement
• Fracture toughness
• Interface/interphase
• Optical microscopy

One promising approach to improving fracture toughness is interleaved toughening. Past observations of toughened particles have typically been conducted using the optical microscope; however, such an approach may not be able to provide a 3-D, birds-eye view of how the toughened particles are distributed on a composite interlaminar surface. In this paper, we developed a simple yet novel optical technique for observing global particle distribution on a composite laminate surface. IM7/8551-7, a material used for the fan blades of the GE90, the world's most powerful commercial aircraft jet engine, was used to demonstrate the strength of our optical technique, which produces high-quality morphological information. High-G(IC) laminate had more uniform and denser particle distribution with a smaller particle size, whereas low-G(IC) laminate had larger, but far less toughened particles. The same optical technique can also be used on other particle-toughened composite systems.

• 出版日期2012-9