摘要
利用声发射技术监测了颗粒填充聚合物材料含单边缺口试样承受三点弯曲载荷时裂纹尖端形成损伤并断裂的全过程 ,明显地区分了裂纹尖端起裂和扩展的不同阶段 ,有效地识别了颗粒填充聚合物材料的破坏模式。研究表明 ,在承载状态下 ,裂纹尖端损伤起始和扩展分为三个阶段 ,且裂纹起裂至快速扩展存在一个演变过程 ;结合SEM观察结果 ,判定该材料的断裂模式以颗粒与基材的界面分离为主。
In this paper,acoustic emission technology was used to monitor the crack initiation and propagation of single edge notched specimen of particulate filled polymer under three point bending condition.In the experiments,the initiation and propagation of crack tip were distinctly distinguished,and the damage modes of particulate filled polymer were efficiently identified.The experimental results studied that the initiation and propagation of crack tip can be divided into three periods.SEM results demonstrated that the main fracture mode of the material is the split between filler and matrix.
出处
《高压物理学报》
CAS
CSCD
北大核心
2000年第3期235-240,共6页
Chinese Journal of High Pressure Physics
基金
中国工程物理研究院科学基金!(990 10 3)
