Dynamic Characterization of Advanced Polymers Using Fiber Optics

目前正在进行一项综合性的实验研究， 单块和增强（纤维和 颗粒）聚合物材料的方法， 光纤传感器 这项研究将有助于更好地了解 这些材料的高应变率行为，同时 评估嵌入式光学河流传感器的性能， 是“智能材料”的关键成分。“基本结果 研究将与声发射的检测有关， 内部应变和扩展裂纹。 另外，动态断裂 研究将与光纤传感器进行连接， 嵌入单片和增强聚合物材料， 瞬时动应力强度因子为 测定 这些实验将提供完整的动态 裂纹萌生、扩展和停止时的应变场历史 在这些材料中。

A comprehensive experimental study is being proposed to perform dynamic characterization of monolithic and reinforced (fiber and particle) polymeric materials using attached and embedded optical- fiber sensors. This study will provide better understanding of the high strain rate behavior of these materials and at the same time evaluate the performance of embedded optical fiver sensors which is a key ingredient of "smart materials." Results from fundamental studies will be relevant to the detection of acoustic emission from internal strains and propagating cracks. Also, dynamic fracture studies will be conducted with the fiber sensors being attached and embedded in monolithic and reinforced polymeric materials, from which the instantaneous dynamic stress intensity factor will be determined. These experiments will provide the complete dynamic strain field history as the crack initiates, propagates and arrests in these materials.